盐胁迫下印度芥菜（L.，Czern和Coss）的差异响应：光合特性与基因表达
Differential response of Indian mustard ( L., Czern and Coss) under salinity: photosynthetic traits and gene expression.
作者信息
Singh Jogendra, Singh Vijayata, Vineeth T V, Kumar Parveen, Kumar Neeraj, Sharma Parbodh C
机构信息
ICAR-Central Soil Salinity Research Institute, Karnal, Haryana 132001 India.
出版信息
Physiol Mol Biol Plants. 2019 Jan;25(1):71-83. doi: 10.1007/s12298-018-0631-3. Epub 2018 Dec 12.
To explore the effect of salt stress on photosynthetic traits and gene expression in Indian mustard, four genotypes CS 54 (national check for salinity), CS 52-SPS-1-2012 (salt tolerant mutant), CS 614-4-1-4-100-13 (salt sensitive mutant) and Pusa bold (high yielding variety) were evaluated under irrigation water salinity (EC 12, and 15 dS m). Results suggest genotype CS 52-SPS-1-2012 followed by CS 54 performed better under imposed salt stress due to differential regulation of Na accumulation in the roots and main stem, restriction of Na influx from root to shoot, maintaining higher net photosynthetic traits under saline stress compared to CS 614-4-1-4-100-13 and Pusa bold. Further, overexpression of antiporters (, , , and ) and antioxidant (, , and ) genes in salt tolerant genotypes CS 52-SPS-1-2012 and CS 54 demonstrated their significant role in imparting salt tolerance in Indian mustard.
为探究盐胁迫对印度芥菜光合特性及基因表达的影响，对四个基因型CS 54（耐盐性国家对照品种）、CS 52 - SPS - 1 - 2012（耐盐突变体）、CS 614 - 4 - 1 - 4 - 100 - 13（盐敏感突变体）和Pusa bold（高产品种）在灌溉水盐度为EC 12和15 dS m的条件下进行了评估。结果表明，基因型CS 52 - SPS - 1 - 2012其次是CS 54，在施加盐胁迫时表现较好，这归因于根和主茎中钠积累的差异调节、限制钠从根向地上部的流入，与CS 614 - 4 - 1 - 4 - 100 - 13和Pusa bold相比，在盐胁迫下保持了较高的净光合特性。此外，耐盐基因型CS 52 - SPS - 1 - 2012和CS 54中反向转运蛋白（……）和抗氧化剂（……）基因的过表达证明了它们在赋予印度芥菜耐盐性方面的重要作用。
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