CEPs suppress auxin signaling but promote cytokinin signaling to inhibit root growth in Arabidopsis
文献类型： 外文期刊
作者： Zhang, Yuwen 1 ; Duan, Xingliang 1 ; Wang, Zhen 1 ; Lv, Yuanda 2 ; Qi, Weicong 2 ; Li, Lun 1 ; Luo, Le 1 ; Xuan, Wei 1 ;
作者机构： 1.Nanjing Agr Univ, Sanya Inst Nanjing Agr Univ, Coll Resources & Environm Sci, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China
2.Zhongshan Biol Breeding Lab, Nanjing 210014, Peoples R China
3.Jiangsu Acad Agr Sci, Excellence & Innovat Ctr, Nanjing 210014, Peoples R China
关键词： Arabidopsis ( Arabidopsis thaliana ); CEP; Auxin; Cytokinin; Root development
期刊名称：BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS （ 影响因子：3.1； 五年影响因子：3.2 ）
ISSN： 0006-291X
年卷期： 2024 年 711 卷
页码：
收录情况： SCI
摘要： C-terminally encoded peptides (CEPs) are peptide hormones that function as mobile signals coordinating crucial developmental programs in plants. Previous studies have revealed that CEPs exert negative regulation on root development through interaction with CEP receptors (CEPRs), CEP DOWNSTREAMs (CEPDs), the cytokinin receptor ARABIDOPSIS HISTIDINE KINASE (AHKs) and the transcriptional repressor Auxin/Indole-3-Acetic Acid (AUX/IAA). However, the precise molecular mechanisms underlying CEPs-mediated regulation of root development via auxin and cytokinin signaling pathways still necessitate further detailed investigation. In this study, we examined prior research and elucidated the underlying molecular mechanisms. The results showed that both synthetic AtCEPs and overexpression of AtCEP5 markedly supressed primary root elongation and lateral root (LR) formation in Arabidopsis. Molecular biology and genetics elucidated how CEPs inhibit root growth by suppressing auxin signaling while promoting cytokinin signaling. In summary, this study elucidated the inhibitory effects of AtCEPs on Arabidopsis root growth and provided insights into their potential molecular mechanisms, thus enhancing our comprehension of CEP-mediated regulation of plant growth and development.
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