Molecular characterization and function analysis of SlNAC2 in Suaeda liaotungensis K.
Molecular characterization and function analysis of SlNAC2 in Suaeda liaotungensis K.
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辽东碱蓬SlNAC2的分子表征及功能分析。
DOI:
10.1016/j.gene.2014.04.025
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发表时间:
2014-06
期刊:
影响因子:
3.5
通讯作者:
Li, Qiu-Li
中科院分区:
文献类型:
--
作者:
Yang, Xing;Hu, Yu-Xin;Li, Xiao-Lan;Yu, Xiao-Dong;Li, Qiu-Li
The plant-specific NAC (NAM, ATAF1/2, and CUC) transcription factors have diverse roles in plant development and stress responses. In this study, a stress-responsiveNACgene,SlNAC2, was isolated and characterized from high-throughput Solexa sequencing ofSuaedaliaotungensis. SlNAC2 showed high similarity to other NACs, especially ATAF subgroup members. Transcripts ofSlNAC2appeared in manySuaedatissues including leaves, stems and roots. In particular,SlNAC2was strongly expressed in leaves. Expression analysis showed thatSlNAC2was highly induced during salt and low temperature stress in leaves. Subcellular localization showed that the SlNAC2 protein localized to the nucleus. A transactivation assay in yeast demonstrated that SlNAC2 activated the expression of a reporter gene. To test its function,SlNAC2was transformed into Arabidopsis under the control of the CaMV-35S promoter. Functional analysis showed that its overexpression resulted in enhanced tolerance to salinity stress. Therefore,SlNAC2is a multifunctional regulatory factor in plants, and might be a good candidate gene for genetic improvement to produce stress tolerant plants.
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