Effects of Zn2+ and niflumic acid on photosynthesis in Glycine soja and Glycine max seedlings under NaCl stress |
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| Authors: | Y.N. Qu Q. Zhou B.J. Yu |
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| Affiliation: | 1. College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;2. Soybean Research Institute/National Center for Soybean Improvement, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China;1. Key Laboratory of Plant Virology of Fujian Province, Institute of Plant Virology, Fujian Agricultural and Forestry University, Fuzhou 350002, Fujian, China;2. College of Horticulture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China;3. Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;1. Research Unit, Family Medicine, Girona. Jordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalonia, Spain;2. Girona Biomedical Research Institute (IDIBGI), Dr. Trueta University Hospital, Catalonia, Spain;3. Primary Care Services, Girona. Catalan Institute of Health (ICS), Catalonia, Spain;4. Translab Research Group. Department of Medical Sciences, School of Medicine, University of Girona, Spain;5. Research on Inflammatory and Cardiovascular Disorders Program (RICAD), Lipids and Cardiovascular Epidemiology Research Group (ULEC) and Cardiovascular, Epidemiology and Genetics Research Group (EGEC), Municipal Institute for Medical Research (IMIM), Barcelona, Spain;6. Research Unit, Healthcare Institute (IAS), Salt, Girona, Spain;1. Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, Granada, Spain;2. Institute for Research in Biomedicine, University of Barcelona and CIBER de Diabetes y Enfermedades Metabólicas (CIBERDEM), Barcelona, Spain;1. Bloodborne Viruses Laboratory, Wadsworth Center, New York State Department of Health, Albany, NY 12201, United States;2. Bureau of HIV and STD Field Services, AIDS Institute, New York State Department of Health, Albany, NY 12201, United States;3. Department of Biomedical Sciences, School of Public Health, University at Albany, Albany, NY 12201, United States |
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| Abstract: | The effects of two anion/Cl? channel inhibitors, Zn2+ and niflumic acid (NA), on seedling photosynthetic and fluorescent parameters of two Glycine soja populations (salt-tolerant BB52; salt-sensitive N23227) and Glycine max cultivar (salt-tolerant Lee68) were studied and compared under salt stress. Treatments with Zn2+ and NA only (10, 20 μmol L?1) were also imposed for comparisons. Results showed that, there were non-toxic and non-nutritional effects of Zn2+ and NA treatments alone on seed germination and seedling growth of soybeans. Under 150 mmol L?1 NaCl for 6 d, leaf chlorophyll and carotenoid contents, net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr), and the maximum photochemical efficiency of photosystem II (PS II) (Fv/Fm) except the stomatal limitation (Ls) significantly decreased in three kinds of soybean seedlings when compared with their control plants. The NaCl stress plus additional 20 μmol L?1 Zn showed an obvious enhancement of leaf chlorophyll and carotenoid contents, Pn, Gs, Ci and Tr, especially for the G. max cultivar Lee68, but the supplementation of 20 μmol L?1 NA showed the reverse effects. |
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