Trade-off between shoot and root dry weight along with a steady CO2 assimilation rate ensures the survival of Eucalyptus camaldulensis under salt stress

Rasheed F., Bakhsh R., Qadir I. (2020): Trade-off between shoot and root dry weight along with a steady CO2 assimilation rate ensures the survival of Eucalyptus camaldulensis under salt stress. J. For. Sci., 66: 452–460

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Salt stress is a major challenge for reforestation in arid to semi-arid regions. Therefore the effect of salt stress was tested in 4-months-old saplings of Eucalyptus camaldulensis under controlled conditions. Individuals were subjected to three levels of salt stress (2, 8, 16 d·Sm–1) and several traits describing growth and dry weight production/allocation, as well as physiological attributes were measured. The results showed that salt stress had no impact on plant height or stem diameter. Number of leaves, number of branches, and leaf chlorophyll content decreased significantly under high salt stress treatment. Leaf dry weight decreased significantly, but root dry weight increased significantly from 6.22 to 8.24 g under high salt stress treatment. Total plant dry weight remained similar while the root/shoot ratio increased significantly under high salt stress treatment. The net CO2 assimilation rate remained stable at ~ 10.1 mmol·m–2·s–1 and stomatal conductance decreased significantly to 79 mmol·m–2·s–1 under high salt stress. Consequently, water use efficiency increased significantly to 3.25 mmol·mol–1 under high salt stress. Therefore we may conclude that the young Eucalyptus camaldulensis saplings can tolerate moderate salt stress by increasing dry weight allocation towards the root system and sustaining the CO2 assimilation rate.

Abbruzzese G., Beritognolo I., Muleo R., Piazzai M., Sabatti M., Scarascia Mugnozza G., Kuzminsky E. (2009): Leaf morphological plasticity and stomatal conductance in three Populus alba L. genotypes subjected to salt stress. Environmental and Experimental Botany, 66: 381–388.
Abramoff R.Z., Finzi A.C. (2015): Are above and below ground phenology in sync? New Phytologist, 205: 1054–1061.
Adams H.D., Kolb T.E. (2004): Drought responses of conifers in ecotone forests of northern Arizona: tree ring growth and leaf d13C. Oecologia, 140: 217–225.
Ahmad K., Saqib M., Akhtar J., Ahmad R. (2012): Evaluation and characterization of genetic variation in maize (Zea mays L.) for salinity tolerance. Pakistan Journal of Agricultural. Science, 49: 521–526.
Álvarez S., Sánchez-Blanco M.J. (2014): Long-term effect of salinity on plant quality water relations photosynthetic parameters and ion distribution in Callistemon citrinus. Plant Biology, 16: 757–764.
Ashraf M., Harris P. (2013): Photosynthesis under stressful environments: an overview. Photosynthetica, 51: 163–190.
Bartels D., Sunkar R. (2005): Drought and salt tolerance in plants. Critical Review in plant Science, 24: 23–58.
Boughalleb F., Denden M., Tiba B.B. (2009): Anatomical changes induced by increasing NaCl salinity in three fodder shrubs, Nitraria retusa, Atriplex halimus and Medicago arborea. Acta Physiologiae Plantarum, 31: 947–960.
Chaves M.M., Flexas J., Pinheiro C. (2009): Photosynthesis under drought and salt stress regulation mechanisms from whole plant to cell. Annals of Botany, 103: 551–560.
Essah P. A., Davenport R. J., Tester, M. (2003): Sodium influx and accumulation in Arabidopsis thaliana. Plant Physiology, 133: 307–318.
Farquhar G., Sharkey T.D. (1982) Stomatal conductance and photosynthesis. Annual Review of Plant Physiology, 33: 317–345.
Fernández-García N., Olmos E., Bardisi E., Garma G.D.L., López-Berenguer C., Rubio Asensio J.S. (2014): Intrinsic water use efficiency controls the adaptation to high salinity in a semi-arid adapted plant henna (Lawsonia inermis L.). Journal of Plant Physiology, 171: 64–75.
Ferrio J. P., Florit A., Vega A., Serrano L., Voltas J. (2003): d13C and tree ring width reflect different drought responses in Quercus ilex and Pinus halepensis. Oecologia, 137: 512–518.
Flexas J., Bota J., Loreto F., Cornic G., Sharkey T.D. (2004): Diffusive and metabolic limitations to photothesis under drought and salinity in C3 plants. Plant Biology, 6: 269–279.
Glaeser L.C., Vitt D.H., Ebbs S. (2016): Responses of the wetland grass, Beckmannia syzigachne to salinity and soil wetness consequences for wetland reclamation in the oil sands area of Alberta Canada. Ecological Engineering, 86: 24–30.
Hansen E. H., Munns D.N. (1988): Effects of CaSO4 and NaCl on growth and nitrogen fixation of Leucaena leucocephala. Plant and Soil, 107: 95–99.
Harfouche A., Meilan R., Kirst M., Morgante M., Boerjan W., Sabatti M., Scarascia Mugnozza G. (2012): Accelerating the domestication of forest trees in a changing world. Trends in Plant Science, 17: 64–72.
Hasegawa P.M., Bressan R.A., Zhu J.K., Bohnert H.J. (2000): Plant cellular and molecular responses to high salinity. Annual Review of Plant Physiology and Plant Molecular Biology, 51: 463–499.
Ioannidis N., Ortigosa M., Veramendi J., Pint o-Marijuan M., Fleck I., Carvajal P., Kotzabasis K., Santos M., Torne M. (2009): Remodeling of tobacco thylakoids by over-expression of maize plastidial transglutaminase. Biochimica et Biophysica Acta (BBA) Bioenergetics, 1787: 1215–1222.
James R.A., Rivelli A.R., Munns R., von Caemmerer S. (2002): Factors affecting CO2 assimilation, leaf injury and growth in salt-stressed durum wheat. Functional Plant Biology, 29: 1393–403.
Koyro H.W. (2006): Effect of salinity on growth, photosynthesis, water relations and solute composition of the potential cash crop halophyte (Plantago coronopus L.). Environmental and Experimental Botany, 56: 136–146.
Lynch J. (1995): Root architecture and plant productivity. Plant Physiology. 109: 7–13.
Mass E.V., Hoffman G.J. (1977): Crop salt tolerance current assessment. Journal of irrigation and Drainage Division, 103: 115–134.
Meloni D.A., Oliva M.A., Martinez C.A. (2003): Photosynthesis and activity of superoxide dismutase peroxidase and glutathione reductase in cotton under salt stress. Environmental and Experimental Botany, 49: 69–76.
Munns R. (2002): Comparative physiology of salt and water stress. Plant, Cell & Environment, 25: 239–250.
Munns R., Tester M. (2008): Mechanisms of salinity tolerance. Annual Review of Plant Biology, 59: 651–681.
Munns R., James R.A., Lauchli A. (2006): Approaches to increasing the salt tolerance of wheat and other cereals. Journal of Environmental Botany, 57: 1025–1043.
Neale D.B., Kremer A. (2011): Forest tree genomics growing resources and applications. Nature Review Genetics, 12: 111–122.
Niazi M.L.K., Haq M.I., Malik K.A. (1985): Salt tolerance studies on ipil ipil (Leucaena leucocephala) cv. K-8. Pakistan Journal of Botany, 17: 43–47.
Norby R.J., Ledford J., Reilly C.D., Miller N.E., Oneill E.G. (2004): Fine-root production dominates response of a deciduous forest to atmospheric CO2 enrichment. Proceeding of the National Academy of Science of the United State of America, 101: 9689–9693.
Ouimet R., Camiré C., Brazeau M., More J.D. (2008): Estimation of coarse root biomass and nutrient content for sugar maple, jack pine, and black spruce using stem diameter at breast height. Canadian Journal of Forestry Research, 38: 92–100.
Qureshi A.S., McCornick P.G., Qadir M., Aslam Z. (2007) Managing salinity and waterlogging in the Indus Basin of Pakistan. Agricultural Water Management, 95: 1–10.
Rasheed F., Dreyer E., Richard B., Brignolas F., Montpied P., Thiec D.L. (2013): Genotype differences in 13C discrimination between atmosphere and leaf matter match differences in transpiration efficiency at leaf and whole-plant level in hybrid Populus deltoides × nigra. Plant, Cell and Environment, 36: 87–102.
Rasheed F., Dreyer E., Richard B., Brignolas F., Brendel O., Thiec D.L. (2015): Vapour pressure deficit during growth has little impact on genotypic differences of transpiration efficiency at leaf and whole plant level: an example from Populus nigra L. Plant Cell & Environment, 38: 670–684.
Shakoor U.A., Saboor I.A., Mohsin A.Q. (2011): Impact of climate change on agriculture empirical evidence from arid region. Pakistan Journal of Agricultural Sciences, 48: 327–333.
Wang L., Mu M., Li X., Lin P., Wang W. (2011): Differentiation between true mangroves and mangrove associates based on leaf traits and salt contents. Journal of Plant Ecology, 4: 292–301.
Zafar Z., Rasheed F., Shaheen F., Hussain Z., Anwaar H.A., Rizwan M., Mohsin M., Qadeer A. (2018): The influence of salt stress on growth and biomass production of Populus deltoides. International Journal of Bioscience, 13: 191–197.
Zafar Z., Rasheed F., Delagrange S., Abdullah M., Ruffner C. (2019): Acclimatization of Terminalia Arjuna saplings to salt stress: characterization of growth biomass and photosynthetic parameters. Journal of Sustainable Forestry, 39: 76–91.
Zhu K. (2001): Plant salt tolerance. Trends in Plant Science, 6: 66–71.
Zhu Z., Chen J., Zheng H.L. (2012): Physiological and proteomic characterization of salt tolerance in a mangrove plant, (Bruguiera gymnorrhiza L.) Lam. Tree Physiology, 32: 1378–1388.
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