Responses of late embryogenesis-abundant genes inLeymus chinensisto water deficit

文献类型： 外文期刊

第一作者： Wan, Dongli

作者： Wan, Dongli;Feng, Xiu;Li, Heping;Wan, Dongli;Ding, Yong;Wan, Yongqing

作者机构：

关键词： Drought stress; Expression patterns; Identification; Late embryogenesis-abundant (LEA) genes; Quantitative real-time PCR

期刊名称：BRAZILIAN JOURNAL OF BOTANY （ 影响因子：1.296； 五年影响因子：1.394 ）

ISSN： 0100-8404

年卷期： 2020 年 43 卷 3 期

页码：

收录情况： SCI

摘要： Leymus chinensisis a perennial rhizome grass that has diverse environmental adaptations. Late embryogenesis-abundant (LEA) proteins play important roles in abiotic stress response processes involved in the protection of macromolecules and cellular structures. Here, 22LcLEAgenes were identified using transcriptome data and classified into six groups based on phylogenetic analyses. The conserved motifs varied among the different protein groups. Among the dehydrin (DHN) group, four LcDHNs contained Y-, K- and S-segments, one LcDHN contained S- and K-segments, and one LcDHN contained only K-segments. Expression profiles indicated that 21LcLEAs had altered expression levels in response to water-deficit stress, and the sixLcDHNs were remarkably induced by drought treatments, with higher transcript accumulations in root than in shoot, implying that theLcDHNgenes play important roles inL. chinensisdefenses against water-deficit conditions. These results provide valuable information on LcLEAs' roles in functional response mechanisms to water-deficit stress and indicate their potential applications in improving drought stress tolerance inL. chinensis.

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