Unraveling the signaling pathways of phytohormones underlying salt tolerance in Elymus sibiricus: A transcriptomic and metabolomic approach

文献类型： 外文期刊

第一作者： De, Ying

作者： De, Ying;Yan, Weihong;Gao, Fengqin;Mu, Huaibin

作者机构：

关键词： Elymus sibiricus; Salt stress; Transcriptome; Metabolome; Signaling pathways; Phytohormones

期刊名称：GENOMICS （ 影响因子：3.0； 五年影响因子：3.3 ）

ISSN： 0888-7543

年卷期： 2024 年 116 卷 5 期

页码：

收录情况： SCI

摘要： Understanding phytohormonal signaling is crucial for elucidating plant defense mechanisms against environmental stressors. However, knowledge regarding phytohormone-mediated tolerance pathways under salt stress in Elymus sibiricus, an important species for forage and ecological restoration, remains limited. In this study, transcriptomic and metabolomic approaches uncover the dynamics of phytohormonal signaling in Elymus sibiricus under salt stress. Notably, four hours after exposure to salt, significant activity was observed in the ABA, JA, IAA, and CTK pathways, with ABA, JA, JA-L-Ile, and IAA identified as key mediators in the response of Elymus sibiricus' to salinity. Moreover, SAPK3, Os04g0167900-like, CAT1, MKK2, and MPK12 were identified as potential central regulators within these pathways. The complex interactions between phytohormones and DEGs are crucial for facilitating the adaptation of Elymus sibiricus to saline environments. These findings enhance our understanding of the salt tolerance mechanisms in Elymus sibiricus and provide a foundation for breeding saltresistant varieties.

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