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Genomic characterization of Serbian Holstein-Friesian cattle populationOriginal PaperMomèilo ©aran, Ljuba ©trbac, Dobrila Jankoviæ, Mihajla Djan, Sne¾ana Trivunoviæ, Minja ZorcCzech J. Anim. Sci., 2023, 68(12):486-496 | DOI: 10.17221/89/2023-CJAS The use of genomic data makes it possible to examine genetic variability and calculate the genetic parameters of the population in an efficient and precise way. The aim of this research was to analyse linkage disequilibrium (LD), contemporary effective population size (Nec), haplotype block structure, minor allele frequency (MAF), observed (HO) and expected heterozygosity (HE), calculate the genomic relationship matrix and perform a principal component analysis (PCA) in the Serbian Holstein-Friesian cattle population using SNP data from the GGP Bovine 100K chip. After quality control (QC), 83 208 SNPs and 1 575 cows were retained for further analysis. LD on autosomes had an average value of ≥ 0.2 up to a distance of 50–60 kb (r2 = 0.211), while on BTX r2 ≥ 0.2 was represented at distances of 80–90 kb (r2 = 0.211). LD differed between chromosomes. The average HO for autosomes and X chromosome SNPs was 0.412 and 0.422, respectively. 81.30% of SNPs that passed QC had MAF > 0.2. The total number of haplotype blocks in the studied population was 15 642. On average, blocks contained 2.932 SNPs. The average block length was 32.657 kb and ranged from a minimum of 0.019 kb (BTA21 and BTA26) to a maximum of 999.562 kb (BTX). The estimated value of Nec in the this cattle population was 142. The results of PCA showed a significant variability of genotypes in the population, but there was no clear stratification of the population. The obtained results will serve as a basis for future genomic analyses such as the detection of QTLs for important economic traits and the implementation of genomic selection. |
Genotypic variation in physiological, biochemical, and transcriptional responses to drought stress in spring barley at an early growth stageOriginal Paper©arlota Kaòuková, Marcela Gubi¹ová, Martina Hudcovicová, Jozef Gubi¹, Katarína OndreièkováPlant Soil Environ., 2025, 71(12):905-922 | DOI: 10.17221/406/2025-PSE Drought is a major abiotic stress limiting barley (Hordeum vulgare L.) productivity. We evaluated 17 spring barley genotypes at the early leaf development stage under controlled laboratory conditions with optimal and drought treatments, integrating physiological, biochemical, and molecular traits. Drought reduced relative water content (–1.3% to –3.2%), plant height (–14.7% to –29.6%), and dry biomass (–2.3% to –24.9%), while inducing strong proline accumulation (+23.6% to +454%) and pigment loss (chlorophyll a –10.1% to –79.5%; carotenoids –6.2% to –70.9%). Principal component and discriminant analyses identified plant height and chlorophyll a as the most reliable discriminators, whereas relative water content was less predictive of the species. Multivariate stratification separated tolerant (Argument, Exalis, Slaven, Malz, Valis), intermediate (Laudis 550, Tango, Kompakt, LG Belcanto, SK Levitus), and sensitive (Kangoo, LG Tosca, LG Flamenco, Karmel, Bojos, Nitran, Tadmor) groups of genotypes. Gene expression profiling of 12 genotypes revealed a modest induction of HvABF2 (1.77-fold), moderate upregulation of HvSOD1 (1.82-fold) and HvAPX1 (2.28-fold), and the strongest response in HvP5CS (3.29-fold), which did not consistently correlate with tolerance. Tolerant genotypes combined growth stability, pigment retention, and moderate osmotic adjustment, whereas sensitive genotypes relied on excessive proline accumulation, resulting in severe pigment and growth penalties. Overall, drought tolerance in barley at the early growth stage emerged from the coordinated regulation of growth, photoprotection, and stress-gene activation, providing a foundation that can guide the selection of genotypes for subsequent validation under field conditions and future breeding programmes. |
Forest carbon and a regional perspective on the effectiveness of financial instruments within the forest bioeconomyOriginal PaperMichaela Perunová, Jarmila Zimmermannová, Tereza SchovánkováJ. For. Sci., 2024, 70(6):317-334 | DOI: 10.17221/24/2024-JFS The forest bioeconomy links to a climate-neutral economy for which effective economic and financial promotion is essential to sustainable development. The main purpose of this study was to examine the effects of financial support on the development of the forest bioeconomy in the Czech Republic in the period 2000–2021. Research objectives were met by applying literature review, time series analysis, spatial data analysis, cartogram and cartodiagram method, correlation analysis, and regression analysis. Firstly, regional divergences in financial flows were observed. Owing to the bark beetle calamity, the peak of the financial support was detected in the Vysoèina Region (CZK 4 658/EUR 190 per ha), and the Olomouc Region (CZK 2 780/EUR 113 per ha) in 2020. An upward trend – more than 6-fold growth of financial flows to forestry was found. Secondly, the forest carbon model was discovered and tested. Financial contribution for reforestation, establishment, and tending of forest stands increases net carbon sinks while financial contribution for green and environmentally friendly technologies increases net carbon sources. Regional carbon reservoirs offer the potential to contribute to climate targets and achieve sustainable progress. |
Ginger essential oil-infused pectin-alginate films for extending sliced bread shelf lifeOriginal PaperNguyen Hong Khoi Nguyen, Nam Quoc Tran, Thuan Huynh Dinh Nguyen, Quyen Phuong HuynhCzech J. Food Sci., 2025, 43(6):438-449 | DOI: 10.17221/24/2025-CJFS This study examines composite films made from pectin and alginate, enhanced with ginger essential oil (GEO) at 0, 0.5, 1, and 1.5% concentration. The films were analysed for their structure, physical properties, antioxidant and antibacterial activities, and effectiveness in preserving sliced bread over 0, 2, 4, 6, and 8 days. The outcomes presented that incorporating GEO upgraded pectin-alginate films' properties. SEM images revealed increased essential oil distribution on the film surface with higher GEO concentrations, indicating good compatibility. Higher GEO concentrations enhanced the films' abilities to scavenge free radicals DPPH, 2,2-diphenyl-1-picrylhydrazyl; and ABTS, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and inhibit bacteria (Listeria monocytogenes and Escherichia coli). Furthermore, increasing GEO concentrations in the films helped maintain key quality attributes of sliced bread, such as moisture content, water activity, microbial counts, and firmness. Films with 1.0 and 1.5% GEO concentrations were the most effective in preserving bread, potentially inhibiting mould formation and maintaining sensory properties over the 8-day storage period. This study demonstrates that pectin-alginate films supplemented with GEO at 1 and 1.5% concentration are suitable for storing sliced bread. |
Performance and physiological responses of E. coli-challenged broiler chickens to dietary Moringa oleiferaOriginal PaperAri Hameed Omer, Sherzad Mustafa HusseinCzech J. Anim. Sci., 2026, 71(2):79-93 | DOI: 10.17221/153/2025-CJAS
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Phenolic and antioxidant assessment of the flowers, stems, leaves, and fruits of Rosa pimpinellifolia and Rosa canina at different growth timeOriginal PaperMehmet Öz, Onur Tolga Okan, Cemalettin BaltaciHort. Sci. (Prague), 2026, 53(1):15-26 | DOI: 10.17221/163/2023-HORTSCI
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Effects of omega-3 fatty acids on fresh bull semen quality: A systematic review and meta-analysisReviewJabulani Ngcobo, Thobela Louis TyasiCzech J. Anim. Sci., 2026, 71(3):97-108 | DOI: 10.17221/6/2026-CJAS
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Preliminary results on the antioxidant capacity of the Coffea arabica grounds extract on semen parameters of Fleckvieh cattle in the Amazonas regionOriginal PaperDeiner Jhonel Gongora-Bardales, Marilu Mestanza Mendoza, Gleni Tatiana Segura Portocarrero, Lizeth Amparo Heredia Vilchez, Jonathan Alberto Campos Trigoso, José Américo Saucedo-Uriarte, Hugo Frias Torres (ORCID: 0000-0003-0224Czech J. Anim. Sci., 2024, 69(9):367-377 | DOI: 10.17221/115/2024-CJAS
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The effects of long-term rice straw and biochar return on soil humus composition and structure in paddy soilOriginal PaperJinyue Ying, Xi Zhang, Weixiang Wu, Qiong Nan, Guorong Wang, Da DongPlant Soil Environ., 2024, 70(12):772-782 | DOI: 10.17221/179/2024-PSE The aim of this study was to evaluate the effects of continuous application of rice straw and biochar for 10 years on soil humus composition and structure in paddy soil. A 10-year field experiment was conducted in a paddy field and included three treatments: rice straw biochar (SC); rice straw (RS), no biochar or rice straw. The elemental analyser, Fourier transform infrared (FT-IR) spectrum, and three-dimensional excitation-emission matrix (3D EEM) fluorescence spectroscopy with fluorescence regional integration (FRI) analysis were used to study the soil humus composition and structure under different treatments. The results verified that the incorporation of rice straw and biochar significantly improved soil pH values and the soil organic carbon contents compared with the control. Rice straw significantly increased the contents of extractable humus, humic acid (HA) and fulvic acid in soil, while biochar only significantly affected HA and humic degree values. The molecular structure of HA affected by biochar is characterised by high humification and aromaticity, but rice straw increased the aliphaticity of the HA structure, as presented by elemental composition. Moreover, 3D EEM spectroscopy combined with FRI analysis showed that RS treatment formed soil humus had more aliphatic compounds, while SC treatment increased the aromatic components of humus. These results suggest that rice straw promotes the renewal of humus, and biochar enhances the humification degree of humus and the aromaticity of HA. |
Comparative analysis of European Union countries based on selected aspects of food securityOriginal PaperEva Matejková, Mária Májek, Artan Qineti, Zlata SojkováAgric. Econ. - Czech, 2024, 70(6):265-278 | DOI: 10.17221/16/2024-AGRICECON
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Modulating Norway spruce growth and resilience through thinning intensity under climate change conditionsOriginal PaperPetra Jablonická, Pavel Horák, Jakub ÈernýJ. For. Sci., 2025, 71(10):482-500 | DOI: 10.17221/55/2025-JFS In recent decades, Norway spruce (Picea abies) stands have become increasingly vulnerable to frequent droughts and associated outbreaks of secondary biotic pests, resulting in significant degradation of forest ecosystems. To preserve their production and ecological functions, it is necessary to apply well-adapted silvicultural practices that mitigate the risk of stand decline. This study examines the effects of two thinning intensities (moderate and heavy) on stand productivity and resilience under varying site conditions. Three long-term research sites with paired differently thinned plots located within and outside the natural range of Norway spruce in the Czech Republic were analysed. Tree-ring width measurements were used to calculate radial growth trends and four resilience indices (resistance, resilience, recovery and average relative growth reduction). Across sites Blaník (BL), Tetøeví Boudy (TB) and ®elezná Ruda (ZR), basal area increment (BAI) differed significantly between thinning intensities (BL: P = 0.044; TB: P = 0.0076; ZR: P < 0.001), with moderate thinning showing higher BAI at BL and TB, whereas heavy thinning reduced growth at the waterlogged TB site. Site-specific differences in tree growth responses to negative pointer years were evaluated, particularly concerning drought events. Resilience metrics computed for five drought pointer years (1976, 2000, 2003, 2015, 2019) showed no consistent differences between thinning intensities; however, at ZR, heavy thinning yielded higher resilience (Rs) and resistance (Rt) in 2015 and 2019. During drought years, the average relative growth reduction (ARGR) ranged from 3% to 31%, with the lowest values under moderate thinning. Overall, moderate thinning enhanced stand productivity and resilience, whereas heavy thinning had adverse effects at the waterlogged site. These results highlight the need to adapt silvicultural practices to local ecological conditions to ensure long-term stability and productivity. |
Crystallinity of starch, food composition, and digestibility of starchReviewEv¾en ©árka, Petra Smrèková, Marcela SlukováCzech J. Food Sci., 2025, 43(2):90-104 | DOI: 10.17221/33/2025-CJFS Starch granules in their native state are insoluble and semi-crystalline. There are three forms of starch/amylopectin in nature: A, B, and C: in cereals (A), tubers and high amylose starches (B), and some varieties of peas and beans (C). Crystallinity and rate of starch hydrolysis depend on the plant species and growing conditions. The changes during food preparation include gelatinisation, the formation of amylose-lipids and amylose-protein complexes, and resistant starch (RS) origin. They are accompanied by changes from crystal to amorphous form and vice versa. Starch in human food is mostly rapidly or slowly digestible. Rapidly digestible starch is formed by gelatinisation, cooking extrusion, breaking down of starch granules, or hydrolysis to maltodextrins. By definition, RS is not digested in the small intestine. This review addresses the influences of biochemical processes in the human body on starch digestibility. It is strongly influenced by the degree of chewing, the activity of α-amylase in the intestine, and transit time through the stomach and small intestine. Resistant starch and endogenous intestinal mucus support the growth of specialist microbes in the large intestine that produce a variety of short-chain fatty acids, causing the perception of satiety, lowering pH, and inhibiting pathogens in the colon. |
Addressing water scarcity in agriculture through small reservoir construction in Kashkadarya ProvinceOriginal PaperKhojiakbar Khasanov, Masharif Bakiev, Oqil Rasulov, Nodira Babajanova, Ilhom AbdurahmanovRes. Agr. Eng., 2025, 71(3):143-154 | DOI: 10.17221/20/2025-RAE This study explores the construction of small reservoirs (SRs) as a strategic solution to address water scarcity in Kashkadarya Province, Uzbekistan, where agricultural productivity is heavily dependent on irrigation. By utilising geographic information system (GIS) and remote sensing (RS) technologies, optimal locations for reservoirs were identified, focusing on improving the water availability for irrigation during critical periods. The research highlights the socio-economic and environmental benefits of SRs, including enhanced agricultural yields, increased employment opportunities, and reduced reliance on energy-intensive pumping stations. The findings indicate that the construction of an 18 Mm3 reservoir in the Ayakchisoy River could supply water to 26.5 thousand hectares, thereby improving the region’s resilience to climate variability. This approach offers a sustainable framework for managing water resources in arid regions, contributing to food security and economic stability. |
The role of ground heat flux in estimating evapotranspiration by the Penman-Monteith method on mountain meadowOriginal PaperMichal Dohnal, Jana Votrubová, Rebeka Mazúchová, Miroslav TesaøSoil & Water Res., 2025, 20(4):265-273 | DOI: 10.17221/24/2025-SWR Ground heat flux (G) is often an overlooked component of the surface energy balance, and its accurate determination remains challenging. In the present study, the accuracy of various G estimation methods is examined using long-term measurements from the Central European mountain meadow. The impact of different G approximation on calculated evapotranspiration by the Penman-Monteith method (ET) is analysed. Soil heat flux measurements and surface temperature data were used to determine G, while net radiation was used to approximate G. Neglecting G led to an overestimation of ET in the daily timestep. On the contrary, the FAO-recommended hourly approximation overestimated G, underestimating ET. Site-specific calibrations of G prediction models improved their accuracy. For daily average G, as well as for hourly average G, simple constant parameter models (i.e., models including a single parameter specifying the fraction of net radiation directly) provide satisfactory accuracy of ET evaluation. However, in an hourly timestep, net radiation fails as a predictor of G shortly after sunrise and before sunset. The findings emphasise the importance of considering G in ET calculations and the need for site-specific calibrations of G estimation models. |
Whole genome sequencing analysis of two sinensis tea (Camellia sinensis var. sinensis) clones: Assessment of molecular variations to search for breeding markersOriginal PaperDwinita Wikan Utami, Adhityo Wicaksono, M. Khais Prayoga, Heri Syahrian, Vitria P. Rahadi, Erdiansyah Rezamela, Budi Martono, Tri Joko Santoso, Nur Kholilatul Izzah, Haris Maulana, Ady Daryanto, Rerenstradika Tizar Terryana (email: rerenstradika.tizar.terryanaCzech J. Genet. Plant Breed., 2026, 62(2):76-88 | DOI: 10.17221/116/2025-CJGPB Tea (Camellia sinensis (L.) Kuntze) is a globally important crop valued for its flavour diversity and health benefits. Whole-genome sequencing (WGS) was performed to compare genomic variation and functional potential between clone Yabukita and locally adapted clone I.1.93. Using next-generation sequencing, approximately 10× genome coverage was achieved for both clones, with high mapping efficiency (98.24% for Yabukita and 97.88% for clone I.1.93), ensuring reliable downstream analyses. Single nucleotide polymorphism (SNP) analysis revealed distinct genomic patterns, with Yabukita showing a more uniform chromosomal SNP distribution, while clone I.1.93 exhibited higher SNP densities on specific chromosomes, particularly chromosomes 5 and 13. Silent mutations predominated in Yabukita (48.21%), whereas missense mutations were more frequent in clone I.1.93 (57.97%), suggesting greater functional divergence. Most SNPs occurred in non-coding regions, indicating potential regulatory roles. GO and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses revealed highly similar shared pathways, including photosynthesis and protein interactions, alongside clone-specific enrichment related to photosynthesis in Yabukita and stress responses in clone I.1.93. miRNA profiling identified distinct regulatory patterns, including the clone-specific miR530 in clone I.1.93. Biosynthetic gene cluster analysis further predicted secondary metabolite pathways associated with terpenoid, polyketide, and saccharide biosynthesis. These findings provide valuable genomic insights for tea improvement and breeding programs. |
Cytotoxic and apoptotic effects of etoposide and ellagic acid alone or with possible synergistic/additive combinations on a canine D-17 osteosarcoma cell lineOriginal PaperGS Ekren Asici, F Kiral, A Bildik, PA UlutasVet 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. |
Estimating changes in the Khisar glacier, using remote sensing data and GIS technologies for the assessment of water use in agriculture (Surkhandarya valley, Uzbekistan)Original PaperShokhjakhon Khamidullaev, Rustam Oymatov, Ilhom Abdurahmanov, Ilkhom AslanovRes. Agr. Eng., 2026, 72(1):14-24 | DOI: 10.17221/141/2025-RAE
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Interaction of seaweed metabolites with plants to enhance protection against biotic and abiotic stressesReviewBibi Aida, Deepak Kasote, Jisun Hyunsook Lee[Ahead of Print]CAAS Agricultural Journals, X:X | DOI: 10.17221/5/2025-PPS Biotic and abiotic stresses severely compromise economically important food crops' nutritional quality, growth, and yield. Conversely, the conventional reliance on chemical fertilisers and pesticides has generated substantial environmental and health risks, necessitating the development of sustainable alternatives. Seaweeds are rich sources of bioactive primary and secondary metabolites, and also promising natural biostimulants for enhancing plant resilience and productivity. Specific seaweed-derived metabolites function as molecular elicitors, mimicking pathogen-associated molecular patterns (PAMPs) and activating multi-layered plant defence mechanisms. This review aims to capture recent literature on the biological efficacy of seaweed extracts and their constituent metabolites, such as polysaccharides, phenolic compounds, and fatty acids, against diverse biotic stressors (e.g., bacteria, viruses, oomycetes, fungi (ascomycetes and basidiomycetes), nematodes, and herbivorous insect pests) and abiotic stressors (such as salinity, drought, extreme temperatures, and heavy metals). The biochemical, physiological, and molecular mechanisms by which seaweed-derived bioactive compounds modulate plant defence responses and stress tolerance pathways are also discussed in detail. In conclusion, seaweed extracts and derived metabolites show promising stress-type-specific effects against biotic and abiotic stresses through diverse mechanisms. However, field validation, dosage optimisation, and the discovery of novel bioactives are essential to harnessing their potential fully in sustainable agriculture |
First report of Colletotrichum nigrum causing tomato anthracnose in SerbiaShort CommunicationRenata Ilièiæ, Jovana Blagojeviæ, Ferenc Bagi, Ðina Konstantin, Vojislav Trkulja, Nenad Trkulja, Tatjana Popoviæ MilovanoviæPlant Protect. Sci., 2024, 60(3):305-309 | DOI: 10.17221/14/2024-PPS During the survey of open tomato fields in Vojvodina (Serbia), characteristic anthracnose disease symptoms, including black, circular, sunken, and watery lesions, were observed in about 20% of fruits in September 2018. Subsequent pathogen isolations formed white aerial mycelia and numerous spherical, black conidiomata on the Potato Dextrose Agar. Ten representative isolates produced hyaline, smooth-walled, cylindrical, and aseptate conidia. The presence of initially brownish necrotic lesions on the tomato, which later expanded into large rotted areas, ultimately leading to complete fruit rot, confirmed the pathogenicity of the tested isolates. Molecular identification was performed using Bayesian analysis of concatenated ITS, TUB2, CHS-1, and ACT loci. Based on the combination of the morphological and molecular features, the fungus Colletotrichum nigrum was identified as the causal pathogen. As this is the first report on this fungal pathogen on tomatoes in Serbia, it highlights the importance of early and accurate detection for effective disease prevention, thus reducing crop damage and market losses. |
Integrated effect of inorganic and bio-organic nutrients on alstroemeria growth, flowering and soil dynamicsOriginal PaperShweta Sharma, Anshul Kumar, Sabhya Pathania, B.P. Sharma, Bharati Kashyap, Abeer Hashem, Graciela Dolores Avila-Quezada, Elsayed Fathi Abd_AllahHort. Sci. (Prague), 2025, 52(2):144-154 | DOI: 10.17221/15/2024-HORTSCI Optimum nutrition is essential for quality cut flower production and for improving soil health. The study aims to evaluate the interaction between bio-organic and inorganic nutrient sources in enhancing alstroemeria (Alstroemeria hybrida L.) cut flower production and soil health for sustainable cultivation practice. Randomised block methodology involving 20 treatment combinations of inorganic fertilisers (NPK) and biostimulants (Panchgavya and Jeevamrit) applied at varying concentrations. Significant outcomes emerged from the combined influence of inorganic and organic sources of nutrients. The application of the 100% recommended dose of fertiliser (RDF) with 75 mL of Panchgavya resulted in substantial improvements in alstroemeria growth parameters, including plant height (7.8%), early flowering (13.08%), flower diameter (20.03%) and the number of flowering stems (25.3%) over the control (100% RDF). Plant spread (24.1%) and number of florets/stem (26.6%) were improved with the application of 100% RDF with 50 mL of Panchgavya when compared with the control. Soil nutrient content, i.e. available nitrogen (11.5%), phosphorus (28.7%), potassium (13.8%) and microbial populations, i.e. fungal (35.4%) and bacterial (28.2%) colonies also exhibited noteworthy enhancements with the application of 100% RDF with 75 mL of Panchgavya over the control. The study concludes that the application of 100% RDF with 75 mL of Panchgavya increased quality cut flower production in alstroemeria. |
Spermidine mitigates wheat copper toxicity by modulating ascorbate and glutathione metabolism, copper accumulation and photosynthetic performanceOriginal PaperLimin Wu, Qiumei Zhang, Ninghai LuPlant Soil Environ., 2025, 71(2):136-147 | DOI: 10.17221/309/2024-PSE The influence of spermidine (Spd) on wheat ascorbate and glutathione metabolism, copper (Cu) accumulation and photosynthetic performance under Cu stress was studied. The findings displayed that Cu stress boosted reduced ascorbate (AsA) and reduced glutathione (GSH) contents by improving ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR), monodehydroascorbate reductase (MDHAR), L-galactono-1,4-lactone dehydrogenase (GalLDH) and gamma-glutamylcysteine synthetase (γ-ECS) activities. Nevertheless, Cu stress promoted malondialdehyde (MDA) accumulation and electrolyte leakage (EL) level, and lowered AsA/dehydroascorbic acid (DHA) and GSH/oxidised glutathione (GSSG). Meanwhile, Cu stress promoted Cu accumulation in plant tissues. It declined net photosynthetic rate (Pn), chlorophyll fluorescence parameter maximum photochemical efficiency of PSII (Fv/Fm), chlorophyll (Chl) and carotenoids (Car) contents, and wheat height and biomass. In this way, Cu stresses limited wheat growth. Compared with Cu stress, Spd plus Cu stress enhanced APX, GR, DHAR, MDHAR, GalLDH and γ-ECS activities to 4.75, 5.14, 3.77, 2.96, 3.24 and 2.83 U/g FW (fresh weight), respectively. This way, Spd further increased AsA and GSH contents to 4.62 and 0.78 µmol/g FW under Cu stress. Meanwhile, Spd increased AsA/DHA to 14.60 and GSH/GSSG to 15.97 and declined MDA content to 11.68 nmol/g FW and EL to 17.00% under Cu stress. Besides, Spd declined Cu content in leaves to 68.8 µg/g DW and roots to 152.9 µg/g DW and respectively increased Pn, Fv/Fm and Chl and Car contents to 15.22 µmol/m2/s, 0.74, 1.55 mg/g FW and 0.38 mg/g FW. In this way, Spd promoted wheat growth under Cu stress. Meanwhile, we found that Spd alone also improved the ascorbate and glutathione metabolism, photosynthetic performance, and wheat growth compared to the control. These results illustrated that Spd mitigated wheat Cu toxicity by reducing Cu accumulation and improving ascorbate and glutathione metabolism and photosynthetic performance. Hence, using Spd will be a good strategy to improve the Cu tolerance of wheat crops in the future. |
Characterization of carotenoid profiles and presence of functional markers in sub-tropical maize (Zea mays L.) inbred linesOriginal PaperPeter Amoah, Victor O. Adetimirin, Bismark Anokye, Oluyinka J. llesanmi, Nnanna Unachukwu, Elisabeth Ivania AporvaCzech J. Genet. Plant Breed., 2025, 61(2):86-99 | DOI: 10.17221/143/2024-CJGPB Biofortification provides a sustainable, pragmatic strategy to address the lack of vitamin A and the associated health complications. The objectives of the study encompassed the quantification of the carotenoid content of 147 maize inbred lines, the identification of variable regions within the ZEP1 gene, the correlation of these observed variances in the presence of this gene with carotenoid content, and the identification of lines harbouring the favourable alleles of the crtRB1 gene. The observed correlations among the carotenoids synthesised by distinct branches of the biosynthetic process were both significant and positive. Utilising gel-based genotyping, 24 lines with contrasting carotenoid profiles were selected, evaluated and sequenced. Analysis of the variation in the sequence classified these lines based on their similarities to give 8 allele groups. The findings highlight that inbred lines both group 1 and group 8 exhibited significant associations with the carotenoid content of the lines. Specifically, ZEP1_7852, a discernible variation belonging to group 8, was found to be significantly associated with zeaxanthin content and total carotenoid content. Furthermore, 25 lines were found to have provitamin A content above 15 μg/g, harbouring the favourable alleles of the crtRB1 gene using KASP SNP zm0016. These lines can serve as parents for source populations and hybrids, leading to the further enhancement of provitamin A in maize. |
Biochar application influences the stability of soil aggregates and wheat yieldsOriginal PaperWeijun Yang, Zilong Wang, Hongmei Zhao, Daping Li, Hongtao Jia, Wanli XuPlant Soil Environ., 2024, 70(3):125-141 | DOI: 10.17221/199/2023-PSE In the present study, a field establishment was initiated in 2018 with eight treatment conditions using biochar application rates of 0, 10, 20, or 30 t/ha and nitrogen application rates of 0 or 150 kg/ha. After two years, the impact of biochar on carbon-nitrogen distributions, soil aggregate stability, and wheat yields was then assessed. The predominant mechanical aggregates after two years were > 5 mm and 2–5 mm granular aggregates, with notable increases in the amounts of these aggregates following the application of biochar with or without nitrogen that coincided with an increase in soil aggregate mechanical stability. Relative to control conditions, aggregate mean weight diameter (MWD) and geometric weight diameter (GMD) values rose by 17.6% and 24.3% for biochar with nitrogen treatment (N: 150 kg/ha; biochar: 20 t/ha), respectively. Biochar application alone and the application of both biochar and nitrogen fertiliser were associated with 6.4–20.2% and 20.7–42.7% increases in spring wheat yields, respectively. Overall, the results of these analyses highlight the value of applying biochar to improve soil quality and boost crop yields proximal to the study site. This study provided the scientific basis for the rational fertilisation and scientific management of biochar combined with nitrogen fertiliser in the irrigation area of Northern Xinjiang, China. |
Different particle sizes of laying hens diets and it’s effect on blood biochemical parameters, ileal digesta viscosity and nitrogen retentionOriginal PaperOndøej ©»astník, Dana Zále¹áková, Jakub Novotný, Vojtìch Kumbár, Andrea Roztoèilová, Eva Mrkvicová, Leo¹ PavlataCzech J. Anim. Sci., 2025, 70(5):183-193 | DOI: 10.17221/11/2025-CJAS The aim of this work was to evaluate the effect of different particle sizes of hens diets on blood biochemical parameters, ileal digesta viscosity and nitrogen retention. In the experimental part, the effects of different physical structure were investigated on two groups of laying hens of the Bovans Brown hybrid from 76 to 80 weeks of age. A finely ground mash diet [geometric mean diameter (GMD), 632 µm] and a coarsely ground mash diet (GMD, 1 258 µm) with the equal nutritional content were used. In the experiment, the particle sizes of the feed mixtures were analysed and compared with the particle size of unaccepted feed residues using a feed separator. Furthermore, feed consumption, live weight of laying hens, blood biochemical parameters, digestive viscosity and nitrogen retention coefficient were assessed. The study revealed that the particle sizes of hens’ diets significantly influenced the nitrogen retention coefficient, with higher values observed in the finely ground diet as compared to the coarsely ground diet (30.3 vs 24.0%; P < 0.05). However, no significant differences were observed in feed intake, live weight, blood biochemical parameters, or digesta viscosity between the dietary groups (P > 0.05). This finding highlights the potential of diet structure optimisation to improve nutrient utilisation efficiency, which is particularly relevant for reducing nitrogen excretion and its environmental impact. These novel insights provide a foundation for further research on the effects of feed structure on productivity and organ health. |
Integrated effect of residue management and drip irrigation on crop growth and water productivity of direct seeded riceOriginal PaperKanwar Barjinder Singh, Gurpreet Singh, Rajeev Kumar Gupta, Ahmed A. Al-Othman, Abed Alataway, Ahmed Z. Dewidar, Mohamed M. MattarPlant Soil Environ., 2023, 69(11):554-565 | DOI: 10.17221/105/2023-PSE Crop residue management and water saving are the two major issues for the sustainability of the rice-wheat cropping system. Therefore, a two-year field experiment was conducted in a split-plot design to study the combined effect of three rice residues (residue incorporation (RI), residue standing (RS) and residue removal (RR) and two wheat residue incorporation (WI) and residue removal (WR) management in main plots and two irrigation regimes, i.e., flood (F) and surface drip (SD) in subplots on the growth and water productivity of direct seeded rice (DSR). During both years, RI-WI resulted in significantly higher plant height (PH), leaf area index (LAI) and dry matter accumulation (DMA) than in other residue management treatments. Drip irrigation significantly increased PH, LAI, DMA grain yield, straw, and biological yield, along with a 9.6% irrigation water savings over flood irrigation. During both years, grain yield, straw and biological yield of DSR were significantly higher in RI-WI than in RR-WR and RR-WI. RI-WI had significantly greater apparent water productivity (AWP) and actual water productivity (RWP) of DSR. Drip irrigation had significantly higher AWP and RWP during both years than flood irrigation except RWP during 2017. Transpiration efficiency (TE) in rice residue incorporation was significantly higher than in rice residue standing and removal. During both years, the TE of drip irrigation was also significantly higher than flood irrigation. So, incorporating rice and wheat residues along with drip irrigation improves crop growth and water productivity. |
Meta-analysis of fluorochrome concentrations to assess bull sperm quality by flow cytometry in 2021–2023ReviewFilipp Georgijeviè Savvulidi, Martin Ptáèek, Szabolcs Nagy, Ludìk StádníkCzech J. Anim. Sci., 2023, 68(12):469-485 | DOI: 10.17221/152/2023-CJAS Flow cytometry (FC) is a very powerful method for the assessment of spermatozoa quality in multiple livestock species, including bulls. Nowadays, many flow cytometric tests are available for quality detection of bull sperm. These tests are based on fluorochromes (fluorescent tags or dyes) and the use of correct concentrations of fluorochromes is an essential aspect of the successful optimization of experimental methodology. Modern flow cytometers are much more affordable, such that spermatologists are now able to use FC methodology (and even image cytometry) in their studies. The present review aims to give a summary of current flow cytometric methodologies used to assess bull sperm quality by flow cytometry. Namely, we give here the concentrations of fluorochromes used in the studies related to bull sperm quality evaluation by flow cytometry published in the last three years (from 2021 to 2023). Importantly, in the present review, the concentration of fluorochromes is unified and presented using comparable molarity units. Furthermore, the rationale of each flow cytometric methodology for particular fluorescent tests, and the citation for the corresponding original methodology, are given. This review will help spermatologists shorten the time needed for the optimization of their flow cytometry methodology for the assessment of bull sperm quality. |
Microsatellite markers as a useful tool for species identification and assessment of genetic diversity of the Tilia species in the Czech RepublicOriginal PaperPavlína Máchová, Helena Cvrèková, Olga Trèková, Kateøina Vítová, Johana Pechaèová, Václav Buriánek, Petr Madìra, Kateøina Hou¹ková, Tomá¹ Vyhnánek, Pavel HanáèekCzech J. Genet. Plant Breed., 2026, 62(1):14-24 | DOI: 10.17221/102/2025-CJGPB Diagnostic morphological traits distinguishing Tilia cordata and T. platyphyllos are not always apparent. Precise species identification is crucial for conservation management and for establishing genetic resources of forest reproductive material. In this study, we employed fifteen microsatellite (SSR) markers to identify diagnostic loci for reliable species discrimination between T. cordata and T. platyphyllos species and to evaluate the genetic diversity. A total of 250 trees were sampled from eight natural autochthonous populations of T. cordata and T. platyphyllos in the Czech Republic, and additional ten individuals of T. tomentosa were included for comparison. Markers Tc8 and Tc918 were identified as diagnostic, exhibiting species-specific alleles for T. cordata and T. platyphyllos. Contrary to the previously published results, we obtained PCR amplicons at locus Tc918 with an allele size of 226 bp in T. cordata. An analysis of the fifteen SSR loci revealed a high level of genetic variability in both the T. cordata and T. platyphyllos populations. No clonally identical genotypes were detected across the eight study sites. The genetic differentiation (Fst) was higher between T. platyphyllos and T. tomentosa (0.316) than between T. platyphyllos and T. cordata (0.205). Bayesian clustering further revealed distinct genetic structures for T. cordata, T. platyphyllos, and T. tomentosa. |
Impacts of exopolysaccharides producing probiotic bacteria on the physicochemical and sensory properties of fermented goat yoghurt under chilled storageOriginal PaperHan Wu, Xiayidan Maimaiti, Ying Wang, Anthony Pius Bassey, Nurgvl Rahman, Xiaoli LiuCzech J. Food Sci., 2024, 42(5):305-316 | DOI: 10.17221/125/2024-CJFS This study focused on the co-fermentation of goat milk with functional lactic acid bacteria (LAB) and traditional yoghurt starter culture. The fermentation process was optimised by single factor experiment and response surface methodology (RSM). The physicochemical and sensory properties of goat milk yoghurt were evaluated under chilled (4 °C) storage for 21 days. The optimised conditions were selected as the inoculum amount of Lactobacillus paracasei NM-8 (1.1 × 107 CFU·mL–1; CFU – colony forming unit), sucrose addition (6.8%) and fermentation temperature (41 °C). During milk coagulation, the pH declined to be 4.45 and the viable LAB number arrived at 8.77 log CFU·mL–1. The content of exopolysaccharides (EPS) increased to be 2.13 g·L–1. These changes led to the better viscosity (941.33–792.33 cP) and higher water holding capacity (63.24–56.20%) of yoghurt fermented using L. paracasei NM-8 in storage, compared with those of yoghurt without L. paracasei NM-8. This study provided a theoretical basis for eliminating the whey precipitation and rough texture of goat milk yoghurt. |
Forest transformation effects on the soil water-holding capacity depend on the forest characteristics and soil properties: A case study in the subtropical regions of southeast ChinaOriginal PaperJiantao Zhou, Qiao Yang, Xin Peng, Qiqian Wu, Yan Peng, Yutong Zhang, Hualing Jiang, Fuzhong Wu, Kai YueJ. For. Sci., 2025, 71(6):312-322 | DOI: 10.17221/8/2025-JFS Forest transformation commonly occurs in subtropical areas due to extensive human disturbance. However, we know little about how forest transformation may affect the soil water-holding capacity. Here, we evaluated the effects of forest transformation from natural forests to secondary forests, Castanopsis carlesii plantations, and Cunninghamia lanceolata plantations on the soil water-holding capacity, including the soil water content (SWC), maximum water holding rate (Rt), capillary holding rate (Rc), and non-capillary water holding rate (Rn), and assessed the influences of soil properties and stand characteristics on the forest transformation effects. The results showed that (i) the soil water-holding capacity in secondary forests increased significantly (SWC: 27.3%; Rt: 50.9%; Rc: 36.9%; Rn: 14.0%), but decreased in the Cunninghamia lanceolata plantations (SWC: 24.6%; Rt: 47.0%; Rc: 34.0%; Rn: 13.0%), compared to the nature forests (SWC: 26.0%; Rt: 48.3%; Rc: 34.9%; Rn: 13.4%); (ii) the soil water-holding capacity was positively correlated with the soil porosity, soil total nitrogen concentration, stand density, but negatively influenced by the soil bulk density and diameter at breast height (DBH); and (iii) the stand density, DBH and litterfall amount were the major factors regulating the soil water-holding capacity after the forest transformation. Overall, these results indicated that the soil water-holding capacity would be strongly altered by the forest transformation, but it depends on the soil properties before the transformation and the characteristics of the transformed forests. Our findings will help to better understand the functions of forests in water source conservation under the pressures of human disturbances and environmental changes. |
Chlorhexidine dihydrochloride's effect on clinical, veterinary and food-origin Staphylococcus aureusOriginal PaperMarta ©tindlová, Václav Peroutka, Simona Lencová, Kamila ZdeòkováCzech J. Food Sci., 2025, 43(5):326-335 | DOI: 10.17221/201/2024-CJFS Chlorhexidine (CHX) is a bactericidal agent used as a common disinfectant since the 1950s. However, its effectiveness may have diminished over the time due to the rise of microbial resistance even among nonantibiotics. In this study, we evaluate the response of 46 Staphylococcus aureus isolates to CHXdihydrochloride according to their origin and phenotype (haemolysis induction, coagulase production, methicillin resistance and biofilm formation). Following classification, the influence of seven CHX concentrations (10.00–0.50 mg·L–1) on planktonic cell growth and biofilm formation was evaluated spectrophotometrically at 620 nm and 595 nm (24 h). Even though the effect of CHX was strain-specific irrespective of origin or phenotypic profile, concentrations above 2.50 mg·L–1 were almost uniformly determined as bactericidal. Although the non-bactericidal concentrations did not indicate any statistically significant differences, they did promote biofilm formation in some cases. Overall, our results suggest that CHX is still an effective disinfectant and an antimicrobial agent against S. aureus. |
