A molecular module with Phe IAA17 as the core significantly promotes lateral root germination

作     者：Junlei Xu Miaomiao Cai Yali Xiea Zhanchao Cheng Chongyang Wu Jian Gao Junlei Xu;Miaomiao Cai;Yali Xie;Zhanchao Cheng;Chongyang Wu;Jian Gao

作者机构：Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo&Rattan Science and TechnologyInternational Centre for Bamboo and RattanBeijing 100102China Department of Biology and Food EngineeringBozhou UniversityBozhouAnhui 236800China 

出 版 物：《Horticultural Plant Journal》 (园艺学报(英文版))

年 卷 期：2025年第11卷第2期

页      面：921-934页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：supported by the National Key Research and Development Program of China(2021YFD2200505) the National Natural Science Foundation of China(32071849) 

主　　题：Phyllostachys edulis Moso bamboo Lateral root PheIAA17 Auxin signaling Molecular module Class B ARF 

摘      要：Monocot root systems comprise a large number of lateral roots to allow them to survive and colonize *** signaling pathways centered on Aux/IAA play a crucial role in lateral root ***,in non-model monocot plants,the effects of Aux/IAA on lateral root initiation and number remain largely *** present study transformed PheIAA17,a member of the Aux/IAA family of Moso bamboo,into rice and found that it significantly drove plants to produce lateral roots and improved the rooting *** experiments showed that PheIAA17 overexpression significantly affected the expression of ARF family *** and promoter analyses indicate that PheARF3-2 belongs to class B ARF,and the promoter region contains auxin response *** results of yeast one-hybrid and dual-luciferase reporter assays confirmed that PheIAA17 bound specific fragments of the PheARF3-2 promoter to repress its transcriptional activity.Y2H and BiFC assay have shown that PheIAA17 and PheIAA30-3 could physically interact in vitro and in *** together,this study reports a new molecular module centered on PheIAA17,which directs plants to alter root morphology through an increase in lateral roots.