Transcription factor TERF1 promotes seed germination through HEXOKINASE 1 (HXK1)-mediated signaling pathway

文献类型： 外文期刊

第一作者： Yuan, Long

作者： Yuan, Long;Liu, Hongzhi;Cao, Yupeng;Wu, Wei

作者机构：

关键词： ABA signaling; Endoplasmic reticulum stress; Glucose-HXK1 signaling; Reactive oxygen species; Seed germination

期刊名称：JOURNAL OF PLANT RESEARCH （ 影响因子：2.8； 五年影响因子：3.0 ）

ISSN： 0918-9440

年卷期： 2023 年 136 卷 5 期

页码：

收录情况： SCI

摘要： Seed germination, a vital process for plant growth and development, is regulated by ethylene. Previously, we showed that Tomato Ethylene Responsive Factor 1 (TERF1), an ethylene-responsive factor (ERF) transcription factor, could significantly promote seed germination by increasing glucose content. As glucose can function as a signaling molecule to regulate plant growth and development through HEXOKINASE 1 (HXK1), we aim to illustrate how TERF1 promotes seed germination through the HXK1-mediated signaling pathway. We showed that seeds overexpressing TERF1 exhibited more resistance to N-acetylglucosamine (NAG), an inhibitor of the HXK1- mediated signaling pathway. We identified genes regulated by TERF1 through HXK1 based on transcriptome analysis. Gene expression and phenotype analysis demonstrated that TERF1 repressed the ABA signaling pathway through HXK1, which promoted germination through activating the plasma membrane (PM) H+-ATPase. TERF1 also alleviated the endoplasmic reticulum (ER) stress to accelerate germination by maintaining reactive oxygen species (ROS) homeostasis through HXK1. Our findings provide new insights into the mechanism regulated by ethylene through the glucose-HXK1 signaling pathway during seed germination.

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