Abstract
The salt-tolerant variety Chuanqiao No.1 and salt-sensitive variety Chuanqiao No.2 of Tartary buckwheat were used as experimental materials. The effects of exogenous calcium on physiological characteristics and the expression of salt tolerance related genes in Tartary buckwheat were analyzed. The results showed that under salt stress, treatment with the appropriate concentration of calcium was beneficial to improve the seed germination rate and seedling fresh weight of Tartary buckwheat, the salt-sensitive variety was increased more, significantly increased the leaf chlorophyll content of Tartary buckwheat, the salt-tolerant variety was increased more, and significantly reduced the leaf MDA content of Tartary buckwheat, the salt-tolerant variety was decreased more. The appropriate concentrations of calcium for Chuanqiao No.1 and Chuanqiao No.2 were 30 mM and 20 mM, respectively. Treatment with the appropriate concentration of calcium could significantly promote the expression of Ca2+-ATPase gene and CBL interaction protein related genes in the stem of salt-sensitive variety and the root of salt-tolerant one, and that of CaMK gene in the stem of salt-tolerant variety. The effects of exogenous calcium treatment on physiological characteristics varied obviously between salt-tolerant and salt-sensitive varieties of Tartary buckwheat.
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We would like to acknowledge the financial supports from the National Natural Science Foundation of China (31371552).
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Qi-Huan Lu analyzed the data and drafted the manuscript; Ya-Qi Wang determined the physiological indexes and gene expression; Hong-Bing Yang designed the study and helped draft the manuscript. All the authors agreed on the contents of the paper and post no conflicting interest.
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Lu, QH., Wang, YQ. & Yang, HB. Effect of exogenous calcium on physiological characteristics of salt tolerance in Tartary buckwheat. Biologia 76, 3621–3630 (2021). https://doi.org/10.1007/s11756-021-00904-9
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DOI: https://doi.org/10.1007/s11756-021-00904-9