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Results 661 to 690 of 5824:

Cytotoxic and apoptotic effects of etoposide and ellagic acid alone or with possible synergistic/additive combinations on a canine D-17 osteosarcoma cell lineOriginal Paper

GS Ekren Asici, F Kiral, A Bildik, PA Ulutas

Vet Med - Czech, 2025, 70(8):279-293 | DOI: 10.17221/24/2025-VETMED

Osteosarcoma (OSA) is the most prevalent and aggressive malignancy of canine bones. Etoposide is an effective chemotherapeutic agent for cancer treatment, whereas ellagic acid is a naturally occurring compound with antioxidant and anticancer properties; however, both are inhibitors of the topoisomerase enzyme. In this study, the synergistic/additive effect of etoposide, known to have a growth-inhibitory impact in canine osteosarcoma (OSA) cells, and ellagic acid was investigated. The mechanism by which this effect inhibits cell growth at lower etoposide doses was also examined. The IC₅₀ values of both agents were determined, and possible combination doses were generated accordingly and applied to canine OSA cells. The apoptotic effects of the combinations were evaluated based on DNA breaks and the activity levels of caspase 3, 8, and 9. These findings were supported by the expression levels of Bcl-2, Bax, and Bid genes, as well as the AO/EtBr staining method. The effects on cell cycle and proliferation were analysed through survivin and NF-κβ gene expressions. Antimetastatic effects were determined using invasion and migration assays. EA is a potential therapeutic agent for cancer treatment. In combination with ET, a higher anticancer efficacy was demonstrated compared to etoposide alone. Potential treatment side effects can be reduced by enabling the use of lower drug doses.

Dissecting genetic variability and character associations of physiological, biochemical, agronomic, and yield traits in rice genotypes under salinity stressOriginal Paper

Heba A. ElSherbiny, Mahrous E. Negm, Hassan Sh. Hamad, Elsayed A. Abo-Marzoka, Dalia E. El-Sharnobi, Nessreen N. Bassuony, Neama K. ElKholy, Fatmah A. Safhi, Dalal S. Alshaya, Nora M. Al Aboud, Elsayed Mansour

Plant Soil Environ., 2026, 72(2):102-121 | DOI: 10.17221/531/2025-PSE

Salinity stress poses an increasing threat to global rice production, particularly under climate change. Enhancing salinity tolerance is crucial to sustain rice production and food security. This study aimed to assess genetic variation among rice parental genotypes and their derived crosses under salinity stress by evaluating physiological, biochemical, agronomic, and yield-related traits. Seven diverse rice genotypes were used to develop 21 crosses using a half-diallel mating design in the summer of 2023. The parental genotypes and their derived crosses were evaluated in the summer of 2024 under controlled greenhouse lysimeter conditions. Salinity stress was induced by irrigation with water containing 10.60 dS/m, and soil salinity was maintained at 9.60 dS/m through controlled irrigation and drainage. Twenty key traits were studied, including phenological and agronomic attributes, yield traits, and physiological and biochemical markers such as relative water content, leaf CO2 assimilation, proline accumulation, malondialdehyde content, and antioxidant enzyme activities, to assess salinity tolerance in rice genotypes. The results demonstrated highly significant variation among the evaluated parental genotypes and their derived crosses across physiological, biochemical, agronomic, and yield-related traits, indicating considerable genetic variability in the studied plant materials. The genotypes C9, R8, and R6 were identified as superior combiners contributing favourable alleles for salinity tolerance. Eleven promising F1 crosses exhibited enhanced growth, improved antioxidant enzyme activities, osmotic adjustment, reduced oxidative damage, and higher grain yield under salinity stress. Exploiting these plant materials can improve the development of novel rice genotypes tolerant of salt-affected environments, addressing the current challenges posed by climate change. Strong associations were observed among physiological, biochemical, agronomic, and yield-related traits, indicating an integrated network of responses that collectively contribute to enhanced salinity tolerance in rice.

Altitudinal patterns of woody vegetation diversity in Al-Jabal Al-Akhdar, a Mediterranean mountainOriginal Paper

Moussa Masoud, Hazandy Abdul-Hamid, Johar Mohamed, Attia Alsanousi

J. For. Sci., 2026, 72(2):73-81 | DOI: 10.17221/92/2025-JFS


This study examines the floristic composition, structural attributes, diversity patterns, and distribution of endemic woody species along an altitudinal gradient in the Al-Jabal Al-Akhdar mountain of northeastern Libya. Stratified sampling was conducted across four elevation zones on the northern and southern slopes. Phytosociological parameters – including density, basal area, importance value index, and diversity indices – were assessed, and Pearson correlations were used to evaluate relationships with altitude and aspect. A total of 61 woody species from 43 genera and 26 families were recorded, highlighting the region's biodiversity. Tree and shrub density and basal area increased with elevation, particularly on northern slopes. Juniperus phoenicea L. emerged as the most dominant tree, while Phlomis floccosa D. Don and Pistacia lentiscus L. dominated the shrub layer. Diversity indices showed negative correlations with altitude, indicating declining species richness and evenness at higher elevations under cooler temperatures and greater environmental stress. Ten endemic woody species were documented, with endemic richness positively associated with altitude, reflecting the role of habitat isolation and environmental filtering. These findings provide essential insights for biodiversity conservation, climate adaptation, and ecosystem management in Al-Jabal Al-Akhdar and comparable mountainous ecosystems.

Determination of yield and biochemical characteristics of turmeric (Curcuma longa L.) grown in subtropical climate zoneOriginal Paper

Fatma Uysal Bayar

Hort. Sci. (Prague), 2026, 53(1):49-58 | DOI: 10.17221/34/2024-HORTSCI

Curcuma longa L., known as turmeric, is a plant species belonging to the Zingiberaceae family. Turmeric is generally spread in Asian countries. It is used in many sectors, especially spices. It has been predicted that increasing climatic changes will affect the agricultural crop pattern. To provide an alternative crop for countries with sub-tropical climates, such as Turkey, the yield and quality values of turmeric grown under the greenhouse and shade net conditions were determined in the present study. Moreover, morphological traits such as plant height, tillering number, and leaf area were determined. The highest fresh yield (1 333.67 g/plant) was obtained under greenhouse conditions. Furthermore, the highest antioxidant value (3.01 IC50 mg/mg 2,2-diphenyl-1-picrylhydrazyl (DPPH)) was obtained under shade net conditions, while the highest total phenolic content (6.88 mg gallic acid equivalent (GAE)/g) was obtained under greenhouse conditions. Curcumin reached the highest level (1.79%) in greenhouse conditions. While the essential oil ratio varied between 5.22 and 7.32%, ar-turmerone, α-turmerone, and β-turmerone were determined as the main components in the essential oil. According to the results, turmeric can be grown in greenhouse conditions in subtropical regions.

Biochar combined with hyperaccumulators: a strategy for remediation of heavy metal composite pollution in mining areasOriginal Paper

Tingting Cao, Wei Wang, Jian Wang, Jinbin Li, Xubo Sun, Yan Xu

Plant Soil Environ., 2026, 72(4):239-258 | DOI: 10.17221/503/2025-PSE

In pursuit of a low-cost, pollution-free, and scalable technology for remediating heavy metal pollution in mining areas, this study examines a gold mining area with heavy metal pollution (Cd, Pb, and Hg) and employs soil replacement, biochar passivation, and a combination of hyperaccumulators for the remediation. Results show that both soil replacement and the application of biochar significantly reduce the effective content of these three heavy metals, with pig manure biochar demonstrating superior passivation effects on Pb and Hg compared to fruitwood biochar. Combining biochar with hyperaccumulators leads to better results than using either method alone. The combined approach achieved maximum reductions of 69.8, 70.1, and 56.0% for Cd, Pb, and Hg, respectively. The application of biochar improves the originally coarse soil structure, with maximum increases in organic carbon, available potassium, available phosphorus, and total nitrogen under different treatments being 6.26 times, 4.66 times, 4.04 times, and 3.21 times, respectively. Biochar anchors heavy metals around roots, while hyperaccumulators utilise their excellent stress-resistant physiological characteristics to thrive in nutrient-deficient soil enriched with biochar, thereby absorbing the heavy metals anchored by biochar. The synergy of biochar and hyperaccumulators enhances their individual effectiveness, showing promise for remediating polluted mining areas.

A systematic review on the modulation of heat shock protein 70 in broilers at different stages of growth under thermal stressReview

Hudu Ramalan Abdullahi, Abubakar Abubakar Ahmed, Suriya Kumari Ramiah, Hasliza Abu Hassim, Yong Meng Goh

Czech J. Anim. Sci., 2026, 71(4):141-158 | DOI: 10.17221/1/2026-CJAS


This systematic review synthesises evidence from published articles investigating nutritional strategies to modulate heat shock protein 70 (HSP70). A total of 1 616 records were identified from four databases and snowballing. After screening and eligibility assessment, 25 studies comprising 29 reports published between 2004 and 2025 were included. The analysis shows that targeted interventions particularly antioxidants (vitamins C, E, and selenium), amino acids and their derivatives (methionine, betaine), and phytogenic compounds effectively downregulate HSP70 expression in a dose or tissue-dependent manner. This modulation is associated with improved growth performance, enhanced redox balance, and normalised stress hormone profiles. Key findings indicate that synergistic combinations outperform single additives in suppressing HSP70 and improving carcass yield under chronic heat stress (32–38 °C); the early-life nutrient delivery modulates HSP70 expression and influences post-hatch thermotolerance; and organic mineral or methionine hydroxy analogue are more effective than inorganic forms. However, efficacy varies by life stage, with most studies focused on Ross and Cobb genotypes, and is influenced by gut microbiota interactions. Major research gaps remain, including defining stage-specific optimal HSP70 thresholds, clarifying links between HSP70 modulation, immunity or gut health, understanding long-term effects of early-life nutritional programming, and determining the influence of administration routes on nutrient efficacy.

Redox potential, nitrate content and pH in flooded Eutric Cambisol during nitrate reduction

T. W³odarczyk, P. Szarlip, M. Brzeziñska, U. Kotowska

Res. Agr. Eng., 2007, 53(1):20-28 | DOI: 10.17221/2132-RAE

Topsoils from 16 arable Cambisols developed from sand, loam and silt were used to study soil ability to nitrate reduction under flooding conditions. The strongest drop of redox potential (Eh) was observed during the first day of soil flooding. Decreasing tendency in pH values was observed of alkaline and neutral soils, and an increase in pH of acid and strongly acid soils, accompanied by a fall in Eh values. Redox potential was negatively correlated with the pH values (R2 = 0.3041; p < 0.001). The fall of NO3- varied from 20 to 100% depending on the type of soil and on the time of incubation. With a decrease of nitrate content within the range from 100 to 10 mg NO3--N/kg, the value of redox potential decreased from 250 to 190 mV. The highest reduction of nitrates coincided with Eh values within a narrow range between 200 and 210 mV. Statistical analysis of redox potential in the function of the content of nitrates showed a curvilinear relation (R2 = 0.3823; p < 0.001).

The effect of different forages on rumen microbiota and milk production performance in Holstein dairy cowsOriginal Paper

Szu Han Wang, Hsiao Han Liao, Chia-Xin Lee, Hsiao-Ming Chen, Ling-You Chen, Shih-Te Chuang, Jih-Tay Hsu

Czech J. Anim. Sci., 2024, 69(9):356-366 | DOI: 10.17221/86/2024-CJAS



Optimising the feed composition, especially the forage choice, and reducing costs are essential for improving dairy production efficiency. Different forage sources and proportions were used to formulate rations containing equal energy and protein, and their effects on rumen microbiota and milk production performance of dairy cows were evaluated in two experiments. In experiment 1, thirty lactating cows (235 ±13 d postpartum; milk production 29.1 ± 1.0 kg/day) were divided into Pangola and Bermuda groups. In experiment 2, twenty lactating cows (79.9 ± 8.1 d postpartum; milk production 34.7 ± 0.6 kg/day) were divided into Pangola and oat groups. In experiment 1, the Simpson index for rumen microbiota of the Pangola group was significantly higher than in the Bermuda group (P < 0.05). Analysis of the weighted unique fraction (UniFrac) distances indicated significant differences in the beta diversity of the community composition of rumen microbiota between Pangola, Bermuda and oat groups in both experiments (P < 0.001). The relative abundance of Prevotella brevis was significantly higher in the Pangola group than in the oat group in experiment 2 (P < 0.05). The somatic cell counts (SCCs), C18:0, and C18:1 in milk were significantly higher in the Bermuda group than in the Pangola group (P < 0.05) in experiment 1. On the other hand, milk crude protein (CP) and solids-not-fat (SNF) were significantly higher in the Oat group than in the Pangola group (P < 0.05) in experiment 2; however, milk urea nitrogen (MUN) was significantly higher in the Pangola group (P < 0.05). In conclusion, a switch of forage (Pangola vs Bermuda) at a lower proportion of the diet under the high forage level condition (experiment 1) caused only minor changes in rumen microbiota diversity (Simpson index, beta diversity) and milk production performance (milk SCCs, C18:0 and C18:1). On the other hand, a switch of forage (Pangola vs oat) at a higher proportion of the diet under the low forage level condition (experiment 2) resulted in greater changes in rumen microbiota diversity (beta diversity, relative abundances of bacterial taxa, P. brevis relative abundance) and milk production performance (milk CP, SNF, and MUN).

Allelopathic potential of Turnera subulata leaf extract on choy sum (Brassica chinensis var. parachinensis) via untargeted metabolomicsOriginal Paper

Nor Atirah Mohd Aridi, Nornasuha Yusoff, Muhd Arif Shaffiq Sahrir, Kamalrul Azlan Azizan

Plant Protect. Sci., 2026, 62(1):79-92 | DOI: 10.17221/148/2024-PPS


Allelopathic plants release phytotoxic compounds that contribute to their invasiveness by suppressing nearby species. However, it remains unclear which exact mode of action (MOA) underlies the allelopathy. This study explores the allelopathic mechanisms of Turnera subulata on the recipient indicator plant choy sum using a metabolomics approach. Briefly, T. subulata leaf aqueous extracts (LAEs) at different concentrations (0.0, 0.1, 1.0, 10.0, 50.0, and 100.0 mg/mL) were sprayed at 100 mL/m2 on choy sum seedlings at the two to three leaf stage. After 21 days, the Soil Plant Analysis Development (SPAD) values and photosynthetic pigments of the exposed choy sum were measured, and their metabolites were subjected to a gas chromatography-mass spectrometer (GC-MS) analysis. The results revealed a 25% decrease in the SPAD, a reduction of 65% (chl a) and 71% (chl b), and a 45% reduction in the stomatal length at 100 mg/mL. A total of 15 significant metabolites (P < 0.05) with variables important for the projection score exceeding 1 (VIP > 1) were selected as the important biomarkers. These metabolites were identified as amino acids, carbohydrates, and fatty acids. The findings reveal the allelopathic potential of T. subulata and provide insights into the response of choy sum in response to the allelopathic activity of T. subulata LAEs.

Genetic diversity and population structure of a Creole sheep flock from UruguayOriginal Paper

Beatriz Carracelas, Pablo Peraza, Brenda Vera, Silvia Llambi, Gabriel Ciappesoni

Czech J. Anim. Sci., 2025, 70(5):173-182 | DOI: 10.17221/93/2024-CJAS


Since 2020, the National Agricultural Research Institute (INIA) has conserved a Creole sheep flock at INIA Las Brujas. This study genetically characterised this population and compared it with six others: San Miguel National Park Creoles, commercial farms Creoles, Brazilian Creoles, Corriedale, Merilin and Soay sheep. The analysis included 628 individuals and 31 392 autosomal SNPs. Soay and San Miguel National Park Creoles exhibited the lowest genetic diversity (Ho = 0.266 and 0.279) and highest inbreeding (FHOM: 0.283 and 0.249; FROH: 0.199 and 0.202). Merilin and Corriedale showed the highest genetic diversity (Ho = 0.351 and 0.364), while Brazilian Creoles had the highest Ho (0.327) among Creoles. Short runs of homozygosity (ROH) segments (≤4 Mb) predominated, with San Miguel National Park and INIA Las Brujas Creoles exhibiting the highest numbers of ROH (22 773 and 16 762, respectively). Fixation index (Fst) and Reynolds distances highlighted INIA Las Brujas Creoles and Soay as the most distinct (0.318 and 0.321, respectively). INIA Las Brujas Creoles also showed notable differentiation from San Miguel National Park Creoles (Fst = 0.269; Reynolds = 0.272). Principal component analysis (PCA) revealed clear clustering, with Corriedale and Merilin closely related (Fst = 0.060; Reynolds = 0.068). Admixture analysis indicated distinct ancestries for Soay, Corriedale and San Miguel National Park Creoles, while commercial and Brazilian Creoles showed significant admixture. INIA Las Brujas Creoles exhibited a distinct ancestry with traces of Corriedale. Phylogenetic analysis confirmed the divergence between Creole and Corriedale/Merilin populations. Results suggest the historical genetic exchange among INIA Las Brujas Creoles, Corriedale, and commercial farms Creoles, while high differentiation of San Miguel National Park Creoles reflects their closed status since 1929.

Hydrology and carbon pool characteristics regulate dissolved carbon export in a subtropical forest headwater streamOriginal Paper

Zemin Zhao, Fuzhong Wu, Yan Peng, Qiqian Wu, Qiao Yang, Chaoxiang Yuan, Xiangyin Ni, Kai Yue

J. For. Sci., 2026, 72(4):188-201 | DOI: 10.17221/68/2025-JFS


Headwater streams are key pathways for carbon (C) transfer from terrestrial to aquatic ecosystems. Sediments and plant litter constitute major C pools in streams, yet their roles in regulating dissolved carbon (DC) exports remain poorly understood. Here, we investigated dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) concentrations and export through monthly sampling over one year in a subtropical forest headwater stream. DOC export peaked during the wet season (98.9 ± 171.8 kg·h–1), whereas DIC export showed no significant seasonal variation. During the wet season, C pool characteristics were more strongly related to DOC dynamics, whereas during the dry season they were more closely associated with DIC dynamics. DOC concentrations in sediments and plant litter were positively related to stream DOC concentrations, while higher total carbon (TC) storage showed weak relationships with DC exports. These results indicate that C pool characteristics influence stream C dynamics mainly through C quality rather than pool size, and that different C pools exert different effects on DOC and DIC dynamics. However, hydrological variables – especially stream discharge – exerted the strongest control on DC export. Together, these findings indicate that hydrology controls C export, whereas C pools regulate the composition of DC in headwater streams.

A decision support system based on disease scoring enables dairy farmers to proactively improve herd healthOriginal Paper

Jan Saro, Ludìk Stádník, Petra Bláhová, Simona Huguet, Helena Bro¾ová, Jaromír Ducháèek

Czech J. Anim. Sci., 2024, 69(5):165-177 | DOI: 10.17221/53/2024-CJAS

Decision support systems (DSSs) enable dairy farmers to make informed and timely decisions on herd health management. However, the lack of a disease scoring system by category and severity limits the application of this approach. In this study, we developed an innovative approach to dairy herd health management by establishing a novel scoring system for dairy herd health management aimed at providing a more nuanced understanding of disease impact. For this purpose, we retrieved 5-year data from 2 558 disease diary records of 798 primiparous and multiparous cows housed on a Czech farm and classified 125 production diseases into six categories, namely lameness, mastitis, postpartum diseases, digestive system, reproductive diseases and other diseases. Based on this metric, we developed a data-driven DSS for farm management. Using this DSS, we identified markers of disease categories for efficient veterinary monitoring on dairy farms. This DSS highlighted a decreasing trend of average monthly disease scores, yet the prevalence of postpartum and other diseases increased during the same period, due to changes in reproduction management within the herd. These findings underscore the need for data-driven targeted interventions for promoting the herd health. Therefore, our scoring model not only provides a comprehensive framework for dairy herd health monitoring and improvement but also advances dairy farming by providing a decision support system easily applicable to dairy farms based on available data recorded in disease diaries.

Claw diseases are the dominant cause of lameness in dairy cows and a risk factor for mastitisOriginal Paper

V Hisira, J Zahumenska, M Kadasi, R Klein, P Mudron, F Zigo

Vet Med - Czech, 2025, 70(2):35-44 | DOI: 10.17221/56/2024-VETMED

Lameness and mastitis are two of the most economically important issues for the dairy industry. This study aimed to obtain a clearer analysis of the link between mastitis and lameness in dairy cows using the Mastitis Score and detecting the pathogens that predominate in dairy cows’ milk samples with claw diseases. During routine claw trimming, milk samples were collected from dairy cows in two Slovak dairy farms. Out of 558 cows presented for claw trimming, 144 cows (25.8%) exhibited lameness from claw diseases. The most prevalent disease in our study was digital dermatitis (43.1%), followed by toe necrosis (41.7%), and Rusterholz ulcer (15.3%). Udder inflammation in clinical form was diagnosed based on clinical examination of individual udder quarters, and sensory evaluation of milk from each quarter and in the subclinical form by the CMT. Mastitis was detected in 80 cows with claw diseases, clinical mastitis in 14 cows (17.5%), and subclinical mastitis in 66 cows (82.5%). On both farms, Mastitis Scores were significantly higher in dairy cows affected by claw diseases than in the non-lame ones. In mastitic cows affected by claw diseases, environmental pathogens dominated the infected milk samples. Our findings showed that cows with claw disease were more likely to have mastitis.

Additive effects of ceftiofur-neomycin combination against multidrug-resistant pathogenic Escherichia coli in a murine infection modelOriginal Paper

K-H Do, M-G Kim, D-H Ryu, H-J Ahn, S-B Kim, Y-K Go, SY Kim, S Kim, S-H Lee, D-K Kim (ORCID:

Vet Med - Czech, 2026, 71(1):18-26 | DOI: 10.17221/38/2025-VETMED

This study aimed to evaluate the therapeutic efficacy of a ceftiofur-neomycin combination against a pathogenic multidrug-resistant Escherichia coli strain, KECS-0513, isolated from pigs, using a combination of genomic, in vitro, and in vivo approaches. The minimum inhibitory concentration, minimum bactericidal concentration, and checkerboard assays were performed. Time–kill assays were used to assess bactericidal activity over time, and a murine intraperitoneal infection model was used to evaluate survival outcomes following treatment with monotherapies or combination regimens. Whole genome sequencing indicated that KECS-0513 harboured multiple resistance genes, including blaTEM-1B, sul3, aadA12, aad(3)-IVa, aph(3’)-Ia, and aph(4)-Ia. The resistance genes were localised within a mobile, element-rich plasmid. In vitro checkerboard assays revealed an additive interaction between ceftiofur and neomycin (fractional inhibitory concentration index = 1.0), and time–kill experiments demonstrated enhanced and sustained bacterial clearance with combination therapy. In vivo infection studies in mice demonstrated that the dual treatment resulted in a substantially higher survival rate (66.7%) compared to treatment with either agent alone (33.3% for each). These results support the practical application of ceftiofur-neomycin combination therapy for controlling swine-associated multidrug-resistant E. coli while minimising the risk of resistance emergence.

Non-farm employment and agricultural mechanisation adoption: A reciprocal relationshipOriginal Paper

Hang Thi Thuy Nguyen, Thi Quynh Anh Le, Pham Xuan Hung, Nguyen Thai Phan

Agric. Econ. - Czech, 2026, 72(1):37-55 | DOI: 10.17221/68/2025-AGRICECON

This study investigates the reciprocal relationship between non-farm employment and mechanisation adoption of smallholders in Vietnam using the longitudinal Vietnam Access to Resources Household Survey (VARHS) 2008–2016 dataset. By employing the correlated random effects with the Mundlak approach to address the selection bias from the unobserved heterogeneity of panel data and the instrumental variables regressions to treat the endogeneity issue of non-farm participation and mechanisation adoption, the findings revealed that non-farm employment and mechanisation adoption have a positive interactive relationship. The mechanisation adoption in agricultural production could save farm labour and allow farmers to engage in non-farm activities. Conversely, non-farm earnings could relax financial constraints and provide opportunities for farmers to invest in mechanisation. The agricultural labour shifting to non-farm work was replaced by hiring machinery services rather than machinery investment when the service market was available and cost-effective. Our study implies practical policies and actionable plans to encourage nonfarm employment and facilitate agricultural mechanisation toward sustainable agriculture and inclusive development in rural communities.

Soil temperature and weather factors as key drivers of flowering phenology and nectar production in black locust (Robinia pseudoacacia L.) in HungaryOriginal Paper

Alexandra Porcsin, Tamás Ábri, Helga Déri, Edit Zajácz, Bence Bolla, Katalin Szakálosné Mátyás, Károly Rédei, Zsolt Keserû

J. For. Sci., 2026, 72(4):202-211 | DOI: 10.17221/6/2026-JFS


The black locust (Robinia pseudoacacia L.) is the second most planted tree species worldwide, and the most common in Hungary. Phenotypic traits, particularly flowering patterns, are well-established indicators of the species' response to climate change. This study examined four forest subcompartments across three Hungarian regions: Northern-Central, Eastern and Southern-Central. The aim was to identify climatic factors correlating with the onset and duration of the flowering period. Additionally, the relationships between these factors and nectar weight and sugar concentration were defined. Results indicate a strong negative correlation between precipitation levels and flowering time: lower accumulated and average precipitation during the spring months of the preceding year was associated with a delayed flowering period in the following year (r = –0.922, r = –0.918, P = 0.05). However, when examining the 14-day period (r = 0.829) before blooming or examining from 1 January (r = 0.929, r = 0.890), the results indicate that other environmental factors may play a more dominant role. Furthermore, the number of chill and heat days was found to affect the starting date (R2 = 0.819, R2 = 0.765).

The effect of chitosan enriched with different essential oils on the physicochemical and microbiological quality of trout burgers stored at 4 °COriginal Paper

Wadah Elsheikh, Ilknur Ucak

Czech J. Food Sci., 2026, 44(1):62-70 | DOI: 10.17221/116/2025-CJFS

This study examined the effects of chitosan films enriched with various essential oils on the quality characteristics of rainbow trout burgers stored at (4 ± 1 °C) for 21 days. Five groups were prepared: a control group (C), a chitosan film group (CF), and groups of chitosan films enriched with 1% oregano essential oil (OEO), citrus essential oil (CEO), and rosemary essential oil (REO). Microbiological counts and physicochemical factors were assessed. Significant differences (< 0.05) in physicochemical properties were observed among the treatments, with OEO showing the lowest pH (6.67), the lowest peroxide value (PV; 12 meq O2·kg–1), and the lowest thiobarbituric acid reactive substances (TBARS) level [1.159 malondialdehyde (MDA)·kg–1]. Microbial results indicated that the shelf life of the treated groups was extended by up to 9 days compared to the control. The lowest counts of Enterobacteriaceae, yeast and mould, and lactic acid bacteria in OEO were 5.17, 4.87, and 5.10 log CFU·g–1, respectively, while the lowest counts of psychrophilic and mesophilic bacteria were observed in the REO group, at 6.34 and 6.29 log CFU·g–1, respectively. In conclusion, combining essential oils, particularly oregano and rosemary, with chitosan effectively enhances seafood freshness and extends its shelf life.

An investigation of the presence of Xylella fastidiosa in Cicadomorpha specimens collected in different habitats in PolandOriginal Paper

Monika Ka³u¿na, Gra¿yna Soika, Wojciech Warabieda

Plant Protect. Sci., 2026, 62(2):146-162 | DOI: 10.17221/207/2024-PPS


A quarantine organism, the bacterium Xylella fastidiosa (Xf), is a xylem-inhabiting, vector-transmitted, Gram-negative, and very slow-growing bacterium in the Lysobacteraceae (earlier Xanthomonadaceae) family. The spreading of X. fastidiosa over long distances occurs mainly via import/export human-mediated transportation of mainly latently or symptomatically infected plant material. Short-distance distribution is usually by xylem sap-feeding insects. Until now, the presence of X. fastidiosa has not been reported or studied in Poland. During our study, over 500 individuals from the four families: Cicadellidae, Aphrophoridae, Delphacidae and Membracidae were collected in different geographical regions of Poland. Real-time PCR with primers for rimM gene and nested PCR to detect X. fastidiosa, using DNA extracted directly from selected insects known as potential vectors of X. fastidiosa, did not confirm the bacterium's presence in these insects.

Nexus of agricultural informatisation and sustainable practices: Food security implications for drought-affected maize farmers in ZambiaOriginal Paper

Shangao Wang, Gershom Endelani Mwalupaso, Xianhui Geng, Emmanuel Kiprop, Jotham Bett, Dancun Kibiwott Kimwei

Agric. Econ. - Czech, 2026, 72(2):101-119 | DOI: 10.17221/84/2025-AGRICECON

Agricultural informatisation (AgI) is hailed as a 'game-changer' for farmers worldwide, even as climate change increases agriculture's vulnerability to climatic risks and threatens sustainable agrifood production. While AgI aspires to help alleviate hunger and poverty in smallholder farm households by improving on-farm productivity through the promotion of sustainable agricultural practices (SAPs), limited empirical evidence exists on the AgI–SAPs nexus, particularly under severe environmental stress such as drought. We analysed data from a survey of maize farmers in central Zambia – a country exemplifying the impact of severe drought, declared a national emergency and disaster – to explore whether and how AgI can optimise SAP adoption and improve crop yields. Given the potential endogeneity of AgI adoption, we employed a recursive bivariate probit (RBP) and endogenous-treatment regression (ETR) to estimate the former and the latter, respectively. We focused on adoption portfolios of three AgI tools – radio, television and mobile phones – and five SAPs: minimum tillage, residue retention, planting basins, improved seed varieties and irrigation. The results reveal that AgI adoption significantly influences SAP adoption, with varying impacts across different AgI and SAP portfolios. Importantly, the adoption of productivity-enhancing SAPs, particularly improved seed and drip irrigation, produced the largest yield effects (124.46 g/capita/day) for AgI adopters. This increase potentially contributes 43.21% towards daily maize-supply quantity, which is crucial for helping households meet the minimum recommended daily caloric intake. The study therefore underscores that AgI plays a critical role in improving yields through SAP adoption, serving as a compelling pathway for agricultural resilience, especially under adverse climatic conditions. These insights align with the United Nations Sustainable Development Goals (SDGs), particularly those aimed at zero hunger, climate action and poverty alleviation, which advocate re-thinking and transforming food-production strategies.

Impact of hemp (Cannabis sativa L.) variety on the seed and stem yield, biochemical characteristics of the inflorescences and nutritional quality of seedsOriginal Paper

Marko Flaj¹man, Anita Ku¹ar, Helena Abramoviè, Jerneja Jakopiè, Darja Kocjan Aèko, Barbara Èeh

Plant Soil Environ., 2026, 72(2):122-137 | DOI: 10.17221/556/2025-PSE

Hemp is becoming increasingly popular, and many new varieties are coming onto the market to meet the requirements of different industries. In this study, the seed and stem yield, seed nutritional properties and the biochemical characteristics of the inflorescences of seven European varieties (Fedora 17, Futura 75, KC Dóra, Monoica, Santhica 27, Tiborszallasi, USO 31) were investigated in a 3-year field trial. Futura 75 and Tiborszallasi stand out as varieties with the highest potential in the conditions of the experiment (humid continental climate with oceanic influences, heavy soil). Futura 75 achieved the highest seed yield (505 kg/ha dry matter), stem yield (8 036 kg/ha fresh matter), protein yield (140 kg/ha) and oil yield (181 kg/ha). There were no differences in protein content (average 21.0%) among varieties. The total unsaturated fatty acid content was as high as 87.6% at Tiborszallasi. The best ratio between omega-6 and omega-3 fatty acids was 3 : 1 in Tiborszallasi, which had also the highest oil content (30.2%), the highest total phenolic content (2.8 mg caffeic acid (CA)/g) and the best antioxidant potential (6.69 EC50 DPPH (2,2-diphenyl-1-picrylhydrazyl) mg/L). Most varieties had higher cannabidiol and tetrahydrocannabinol contents in the inflorescence at seed maturity (from 0.22 to 3.3 for cannabidiol (CBD) and from 0.00 to 0.32 for tetrahydrocannabinol (THC)) compared to full flowering (from 0.17 to 4.33 for CBD and from 0.00 to 0.52 for THC, on average 2.64% for CBD and 0.19% for THC), presenting an opportunity for dual-purpose use.

Establishment of an experimental pig model for the induction of a Staphylococcus hyicus skin infectionOriginal Paper

K Matiaskova, M Reichelova, E Jeklova, M Zouharova, S Kobzova, K Nedbalcova, J Matiasovic, M Faldyna

Vet Med - Czech, 2026, 71(3):83-94 | DOI: 10.17221/68/2025-VETMED

Staphylococcus hyicus is one of the causative agents of exudative epidermitis in pigs. The aim of this study was to establish a porcine challenge model of a skin infection caused by S. hyicus to assess the effectiveness of a medicinal product intended for local application. Based on the results of the presence of toxin encoding genes and antimicrobial resistance (detected resistance to clindamycin, penicillin, ampicillin, erythromycin and tetracycline), three field strains were selected for the trial. At D0, six surface defects were created on the back of six piglets. The defects were inoculated with bacteria at two different concentrations: 1 × 108 or 1 × 109 CFU/ml. Every day throughout the experiment, the pigs were monitored, and their rectal temperatures were measured. On D4, D9, and D14, a visual evaluation and indirect bacteriological imprints of the defects were performed. Crusts were present from D9, and a lower bacterial concentration led to reduced secretion and crust formation. Based on the results of bacterial cultivation of the indirect imprints, however, S. hyicus was present in greater amounts in the wound defects infected with the lower bacterial concentration. As there were differences in the obtained results among the strains used, it can be concluded that the strain marked as CAPM 6689 seems to be the most applicable and the lower concentration was enough for the infection development.

Degradation of Betula spp. under the influence of biotic factors in the forests of Ukrainian PolissiaOriginal Paper

Ivanna Kulbanska, Maryna Shvets, Svitlana Matkovska, Tetiana Melnyk, Vasyl Zayachuk, Nataliya Horbenko, Oleh Zymaroiev, Anastasiia Zymaroieva

J. For. Sci., 2026, 72(3):148-160 | DOI: 10.17221/96/2025-JFS


The paper examines the impact of biotic factors – mainly pests and pathogens – on the degradation of Betula spp. in the forests of Ukrainian Polissia. The taxonomic structure of the identified mycobiota includes representatives of 9 genera, 8 families, 5 orders, 4 classes, and two divisions (Ascomycota 44.4%, Basidiomycota 55.6%). Xylotrophic Basidiomycetes, particularly Fomitopsis betulina and Fomes fomentarius, pose the greatest threat due to their ability to destroy wood tissues. The bacterial pathogen Lelliottia nimipressuralis, the agent of wetwood, also plays a major role, impairing xylem water transport and causing systemic physiological imbalance in affected trees. Entomofauna significantly contributes to degradation processes. A total of 31 insect species were recorded, belonging to five orders, 24 families, and 29 genera, with Coleoptera being the most numerous (32.3%). The most harmful are xylophagous species (e.g. Agrilus betuleti, Rhagium mordax) and phytophagous species (e.g. Geometra papilionaria, Parornix betulae), which cause mechanical tissue damage and facilitate secondary infections. The results indicate that pathogenic complexes intensify under environmental stress, accelerating the decline of Betula spp. stands. These findings underscore the necessity for ongoing phytosanitary monitoring and adaptive management measures to mitigate further degradation risks in the birch forests of Polissia.

Candidate natural enemy assemblage for the biological control of Lymantria dispar L. in oak (Quercus spp.) with different levels of pest infestationOriginal Paper

Gloria López-Pantoja, Antonia María Paramio, Sebastiana Malia, Israel Sánchez-Osorio

J. For. Sci., 2024, 70(8):420-435 | DOI: 10.17221/14/2024-JFS

Mediterranean Quercus forests have great ecological importance but face numerous threats, including pests. The spongy moth, Lymantria dispar L., is a major oak defoliator across its geographical range and has a natural enemy complex that may control its population dynamics. This study aimed to investigate candidate predators (Coleoptera: Carabidae) and parasitoids (Hymenoptera: Encyrtidae, Ichneumonidae, Pteromalidae, Braconidae, Bethylidae, Ceraphronidae, Eulophidae, Eupelmidae and Trichogrammatidae; and Diptera: Tachinidae), for the control of L. dispar in two areas in Andalusia (Spain). We studied 10 Quercus stands (Q. suber, Q. ilex, and Q. pyrenaica), with different L. dispar infestation level. Insects were collected using pitfall and cross-vane traps, during the defoliator's larval period. Four genera comprised 92.2% of all the Carabidae predators found: Steropus Dejean (34.1%), Carabus L. (28.4%), Calathus Bonelli (15.9%), and Platyderus Stephens (13.8%); and four Hymenoptera families comprised 93.7% of the parasitoid specimens collected: Encyrtidae (61%), Ichneumonidae (17.5%), Pteromalidae (10.7%), and Braconidae (4.5%). Both the natural enemy assemblage composition and the abundance per tree varied between geographical areas, as well as between levels of defoliator infestation. The candidate enemy complex was markedly diverse and abundant in stands not infested by L. dispar, where no insecticides had been applied. Our results suggest the importance of generalist predators as natural enemies of L. dispar.

Effects of omega-3 fatty acids on fresh bull semen quality: A systematic review and meta-analysisReview

Jabulani Ngcobo, Thobela Louis Tyasi

Czech J. Anim. Sci., 2026, 71(3):97-108 | DOI: 10.17221/6/2026-CJAS


Polyunsaturated fatty acids (PUFAs), including omega-3, are known to yield health benefits to mammals, including bulls and human beings. This meta-analysis was done to determine the influence of omega-3 fatty acids (OMFA) on bull semen quality. The research question formulated for this meta-analysis was centred on the Population-Intervention-Comparison-Outcome (PICO) framework. To determine the influence of omega-3 fatty acids on semen quality, a meta-analysis was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. The different effects were analysed using a random effects model. The variations among the included studies were tested using heterogeneity (I2). Semen volume (MD = 0.28, 95% CI: 0.13; 0.44), sperm concentration (MD = 71.12, 95% CI: 15.97; 126.26), live sperm (MD = 11.93; 95% CI: 7.30; 16.55), sperm motility (MD = 9.24, 95% CI: 7.39; 11.09) and plasma membrane integrity (MD = 11.60, 95% CI: 6.30; 16.89) increased dramatically in the omega-3 fatty acid-supplemented group. Notably, the progressive motility (MD = 1.19, 95% CI: –3.24; 5.61) was the only sperm parameter showing a non-significant influence when omega-3 fatty acids were supplemented. It was then concluded that the omega-3 fatty acid supplementation can be used to improve most of the semen parameters in bulls.

Pulsed electromagnetic fields vs NSAID therapy in canine osteoarthritis: A randomised comparative pilot studyOriginal Paper

S Sassaroli, F Dini, V Sisti, V Riccio, S Meggiolaro, L Bellodi, A Palumbo Piccionello

Vet Med - Czech, 2026, 71(3):106-116 | DOI: 10.17221/54/2025-VETMED

Non-steroidal anti-inflammatory drugs (NSAIDs) are a cornerstone in the management of canine osteoarthritis (OA), despite concerns regarding their long-term safety. Among non-pharmacological alternatives, pulsed electromagnetic field (PEMF) therapy has gained attention for its potential analgesic and anti-inflammatory effects, although veterinary-specific evidence remains limited. This randomised, controlled pilot study compared the clinical efficacy of PEMF therapy versus NSAID treatment (Mavacoxib) in 16 dogs with clinically and radiographically confirmed OA. Dogs were randomly assigned to receive either a 12-session PEMF protocol over 45 days or a standard Mavacoxib regimen. Clinical evaluations included pain scores (VAS), pain on palpation, lameness severity (NRS), gait analysis (GLS and TPI), muscle circumference, and radiographic progression. Assessments were performed at baseline (T0), 30 days (T1), and 60 days (T2). PEMF therapy showed earlier improvements in pain, lameness, and muscle mass, and a favourable trend in joint mobility. No significant differences were detected in gait or radiographic parameters between groups. These preliminary findings suggest that PEMF is non-inferior to NSAIDs and highlight its potential role in multimodal OA management. Limitations include a small sample size and a short follow-up. Further studies are needed to confirm these preliminary results in larger cohorts.

The temperature sensitivity of stable organic carbon storage rises with increasing soil salinityOriginal Paper

Chao Li, Yanling Tian, Wei He, Yanhong Lou, Hong Pan, Quangang Yang, Guoqing Hu, Yuping Zhuge, Hui Wang

Plant Soil Environ., 2026, 72(1):16-27 | DOI: 10.17221/479/2025-PSE

Soil salinisation is a key determinant in soil fertility decline, exerting a direct negative impact on soil organic carbon. In the context of global warming, investigating the response mechanisms of soil organic carbon pools with varying salinity levels to climate change is essential for accurately assessing the carbon cycle and emission potential of degraded soils. Based on soil samples (B1–B6) collected along a coastal salinity gradient, indoor incubation experiments were conducted at 15 °C and 25 °C to characterise soil respiration and its temperature sensitivity (Q10). Double-exponential models were used to simulate soil organic carbon (SOC) mineralisation, characterising active and stable organic carbon pools. The results demonstrated that the Q10 value of the stable organic carbon pool (7–8% of SOC mineralisation) was 103% higher than that of the active organic carbon pool (the initial 1% of SOC mineralisation). The Q10 value of the stable organic carbon pool was 32.6% higher at the high-salinity sites (B1, B2) than at the low-salinity sites (B4, B5). Soil organic carbon, total nitrogen (TN), and total salt (TS) were key regulators of Q10. The Q10 of the active organic carbon pool correlated positively with SOC and TN but negatively with TS, whereas the stable pool showed the opposite trends. The stable organic carbon pool exhibits a salinity-amplified Q10, implying that predictive models must account for this mechanism to avoid substantially underestimating carbon losses from degraded saline soils.

The inhibition of deep peritoneal endometriosis by Andrographolide through macrophage M1 activity in an endometriosis mice modelOriginal Paper

IA Susianto, N Susilaningsih, ST Hidayat, Hardian, RR Tjandrawinata, B Rachmawati

Vet Med - Czech, 2026, 71(2):62-72 | DOI: 10.17221/32/2025-VETMED

This study aims to demonstrate that Andrographolide, an herbal immunostimulant, can influence M1 macrophages to inhibit inflammation, including the growth of endometriosis caused by inflammation. This study evaluates the effects of Andrographolide on suppressing endometriosis through M1 macrophage activity. This post-test-only experimental study involved 42 female Balb/C mice, which were divided into six groups: Group N, KN (endometriosis without therapy), and KP (endometriosis + dienogest), P1 (endometriosis with 0.05 mg/kg), P2 (endometriosis + 0.1 mg/kg Andrographolide), and P3 (endometriosis + 0.2 mg/kg Andrographolide). Peritoneal fluid was aspirated, and the peritoneum was cut and stretched to observe the extent of the endometriosis. This study compared the formation of ectopic endometrial lesions and analysed the M1/M2 ratio in each group that received standard therapy versus Andrographolide therapy. The results from peritoneal fluid flow cytometry indicated that M1 was more dominant than M2 compared with KP. The levels of M2 in the P2 and P3 groups were also significantly lower than in the KN group. This study demonstrated that Andrographolide may enhance the regulation of M1 macrophage differentiation, acting as a precursor to endometriosis growth by suppressing M2 phenotypes that promote the condition.

Cryopreservation of cherry rootstock Gisela 5 using vitrification procedureOriginal Paper

Dj. Ru¾iæ, T. Vujoviæ, R. Ceroviæ

Hort. Sci. (Prague), 2014, 41(2):55-63 | DOI: 10.17221/234/2013-HORTSCI

In vitro-grown shoot tips of Gisela 5 (Prunus cerasus × Prunus canescens) cherry rootstock were tested for regrowth after cryopreservation using vitrification technique. Explants were precultured in the dark at 23°C, in a liquid MS medium with a progressively increasing sucrose concentration (0.3 M for 15 h, then 0.7 M for 5 h), and subsequently loaded in a solution containing 2 M glycerol and 0.4 M sucrose for 20 minutes. Shoot tips were dehydrated at 0°C using either the original PVS2 or modified PVS2 solution (PVS A3 - 22.5% sucrose, 37.5% glycerol, 15% ethylene glycol and 15% DMSO) for 30, 40 and 50 minutes. The survival and regrowth of the cryopreserved shoot tips dehydrated with the original PVS2 solution ranged between 36-54% and 8-17%, respectively. However, the dehydration with the PVS A3 solution resulted in considerably higher survival rates (81-92%), as well as higher regrowth rates (39-56%) after cryopreservation. These results prove the feasibility of the PVS A3-based vitrification technique for a long-term storage of this genotype.

Effect of moisture content on terminal velocity of lentil grainOriginal Paper

Zahra Basati, Ezzatollah Askari Asli- Ardeh, Vali Rasooli-Sharabiani

Res. Agr. Eng., 2019, 65(1):7-12 | DOI: 10.17221/92/2017-RAE

One of the aerodynamic characteristics of lentil is its terminal velocity. In order to determinate the terminal velocity, was designed a vertical wind tunnel. It was fabricated based on existing methods and standards. For decreasing the non-uniformity of airflow in the vertical wind column, was used a honey comb test area with 5 mesh screens. So, a wind tunnel nozzle was designed and fabricated using Morel method with the aim of increasing airflow rate and decreasing losses due to mesh screens. The height and section area of tunnel were 1.425 m and 0.1 × 0.1 m2, respectively. The pressure loss values were calculated at different parts of tunnel and then, the required power of tunnel was determined. In this study, lentil grains of Kimia and Gachsaran varieties were separated at three groups based on their size (small, medium and large). Then, the terminal velocity was measured at 5 levels of moisture content (8, 12, 16, 20 and 24% (w.b.)) for each group. The results showed that Kimia and Gachsaran variety had the highest (7.204 m.s-1) and the lowest (6.987 m.s-1) terminal velocity, respectively. The mean value of terminal velocity increased linearly from 6.751 to 7.396 m.s-1 by increasing the moisture content from 8 to 24% (w.b.). Also, by increasing the grains dimension from small to large, the terminal velocity increased from 6.345 to 7.792 m.s-1.

Hydroxymethylfurfural content and colour parameters of cookies with defatted wheat germFood Technology and Economy, Engineering and Physical Properties

Marijana Sakaè, Pavle Jovanov, Jovana Petroviæ, Lato Pezo, Aleksandar Fi¹te¹, Ivana Lonèareviæ, Biljana Pajin

Czech J. Food Sci., 2019, 37(4):285-291 | DOI: 10.17221/324/2017-CJFS

Defatted wheat germ was used to substitute wheat flour by 5-15% to produce cookies enriched with protein, fat, sugar and minerals. The effects of different level of substitution of wheat flour by defatted wheat germ and dough moisture content (20-24%) on hydroxymethylfurfural (HMF) formation in cookies were investigated. Colour parameters (L*, a*, and b*) were also measured, total colour difference (ΔE) and browning index (BI) were calculated and their correlations with HMF content were studied. The substitution of wheat flour by defatted wheat germ led to a higher HMF content compared to control cookies (P < 0.05). However, its formation was more strongly influenced by the dough moisture content than by the level of substitution. HMF content is positively correlated to the a* (r = 0.890; P < 0.01), b* (r = 0.605; P < 0.01) and BI (r = 0.710; P < 0.01) values, and negatively correlated to the L* (r = -0.624; P < 0.01). Results of the HMF formation and the correlation between HMF content and colour parameters were confirmed by the PCA analysis.

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