Isolation and characterization of PoWRKY, an abiotic stress-related WRKY transcription factor from Polygonatum odoratum

文献类型： 外文期刊

第一作者： Wei, Zhongping

作者： Wei, Zhongping;Ye, Jingfeng;Zhou, Zhiquan;Chen, Gang;Meng, Fanjin;Liu, Yifei

作者机构：

关键词： Polygonatum odoratum; WRKY transcription factors; Cold stress; Drought stress; Overexpressing

期刊名称：PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS （ 影响因子：3.5； 五年影响因子：3.9 ）

ISSN： 0971-5894

年卷期： 2021 年 27 卷 1 期

页码：

收录情况： SCI

摘要： WRKY transcription factors play vital roles in response to biotic and abiotic stresses in plants. As a kind of high value medicinal plant, Polygonatum odoratum has an ability to tolerate various abiotic stresses because of the special growth condition. In current study, a novel WRKY gene from P. odoratum is isolated and compared with homologous sequences from other plants. PoWRKY1 possesses two typical WRKY domains and two C2H2 zinc-finger motifs. Evolutionary analysis indicated that PoWRKY1 is most closely related to WRKY protein from Asparagus officinalis. Expression analysis showed that expression of PoWRKY1 is induced by cold and drought stresses but not salt stress. Overexpression of PoWRKY1 in Arabidopsis improved seed germination and root growth of transgenic plants during cold stress and drought. In addition, super oxide dismutase activity and proline content in transgenic plants increased under cold and drought stresses, whereas malondialdehyde levels and relative electrolyte leakage reduced under similar stress conditions. Taken together, these results showed that PoWRKY1 enhances the tolerance to cold and drought stresses. This study lays a potential foundation to understand the molecular mechanism of tolerance to abiotic stress in P. odoratum.

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[1]Isolation and characterization of PoWRKY, an abiotic stress-related WRKY transcription factor from Polygonatum odoratum. Wei, Zhongping,Ye, Jingfeng,Zhou, Zhiquan,Chen, Gang,Meng, Fanjin,Liu, Yifei. 2021

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