Zea mays NAC transcription factor family members: their genomic characteristics and relationship with drought stress

文献类型： 外文期刊

第一作者： Li, Liang

作者： Li, Liang;Ma, Yiwen;Li, Liang;Ma, Yiwen;Zhang, Shihuang;Hao, Zhuanfang;Li, Xinhai

作者机构：

关键词： Zea mays;NAC transcription factor;structure;characteristics;candidate gene;drought stress

期刊名称：RESEARCH JOURNAL OF BIOTECHNOLOGY （ 影响因子：0.233； 五年影响因子：0.252 ）

ISSN： 2278-4535

年卷期： 2015 年 10 卷 11 期

页码：

收录情况： SCI

摘要： NAC (NAM, ATAF1/2 and CUC2) has been verified to regulate biological responses in various biotic and abiotic stress-resistant activities. In Zea mays, 190 NAC proteins downloaded from the Plant transcription factor (TF) database website were identified and given their unified names here. Of them, 177 maize NAC proteins that showed at least two conserved subdomains of NAC TF were used for phylogenetic analysis. The NAC proteins were compared to 18 known functional NAC TFs in Arabidopsis and rice and a total of 195 NAC proteins were phylogenetically classified into five groups. The NAC-IV group was predicted to be a SNAC (stress-responsive NAC) subfamily. For them, 13 SNAC transcripts in the SNAC subfamily showed a response to drought stress and nearly all of these transcripts in the roots under drought stress and eleven transcripts in the leaves under 12 h of drought stress were up-regulated. Most important, ZmNAC010312, ZmNAC080308 and ZmNAC030295 of SNAC subfamily were further validated to be drought-responsive candidate genes by differential expression analysis. These findings are important for drought-responsive candidate gene selection in all maize NAC genes and advances in the functional analysis of the NAC family in Zea mays.

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