TaNAC2, a NAC-type wheat transcription factor conferring enhanced multiple abiotic stress tolerances in Arabidopsis.

Journal of Experimental Botany
Xinguo MaoRuilian Jing

Abstract

Environmental stresses such as drought, salinity, and cold are major factors that significantly limit agricultural productivity. NAC transcription factors play essential roles in response to various abiotic stresses. However, the paucity of wheat NAC members functionally characterized to date does not match the importance of this plant as a world staple crop. Here, the function of TaNAC2 was characterized in Arabidopsis thaliana. A fragment of TaNAC2 was obtained from suppression subtractive cDNA libraries of wheat treated with polyethylene glycol, and its full-length cDNA was obtained by searching a full-length wheat cDNA library. Gene expression profiles indicated that TaNAC2 was involved in response to drought, salt, cold, and abscisic acid treatment. To test its function, transgenic Arabidopsis lines overexpressing TaNAC2-GFP controlled by the cauliflower mosaic virus 35S promoter were generated. Overexpression of TaNAC2 resulted in enhanced tolerances to drought, salt, and freezing stresses in Arabidopsis, which were simultaneously demonstrated by enhanced expression of abiotic stress-response genes and several physiological indices. Therefore, TaNAC2 has potential for utilization in transgenic breeding to improve abiotic ...Continue Reading

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Citations

Aug 15, 2013·Molecular Genetics and Genomics : MGG·Guozhang KangTiancai Guo
Aug 25, 2012·Yi chuan = Hereditas·Li-Jun SunFeng-Ming Song
Jul 6, 2014·Plant Physiology and Biochemistry : PPB·Kazi Md Kamrul HudaNarendra Tuteja
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Aug 2, 2016·Current Opinion in Plant Biology·Mallikarjuna Rao KoviOdd Arne Rognli

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Methods Mentioned

BETA
PCR
transgenic
PCRs
reverse-transcription PCR
fluorescence microscopy
environmental stresses
environmental stress

Software Mentioned

proml
PHYLIP
DNAStar
MegAlign

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