Journal
PLANT CELL REPORTS
Volume 31, Issue 2, Pages 339-347Publisher
SPRINGER
DOI: 10.1007/s00299-011-1169-9
Keywords
Salt tolerance; TaST; Wheat; Ion content; Overexpression
Categories
Funding
- National Natural Science Fund [30971766]
- Hebei Provincial Natural Science Fund [C2009000278]
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On the basis of the results of gene chip analysis of the salt-tolerant wheat mutant RH8706-49 under conditions of salt stress, we identified and cloned an unknown salt-induced gene TaST (Triticum aestivum salt-tolerant). Real-time quantitative PCR analysis showed that the expression of the gene was induced by salt stress. Transgenic Arabidopsis plants overexpressing the TaST gene showed higher salt tolerance than the wild-type controls. Subcellular localization studies revealed that the protein encoded by this gene was in the nucleus. In comparison with wild-type controls, transgenic Arabidopsis plants accumulated more Ca2+, soluble sugar, and proline and less Na+ under salt stress. Real-time quantitative PCR analysis showed that Arabidopsis plants overexpressing TaST also showed increased expression of many stress-related genes. All these findings indicated that TaST can enhance the salt tolerance of transgenic Arabidopsis plants.
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