The regulatory mechanism of rapid lignification for timely anther dehiscence

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外文摘要：Anther dehiscence is a crucial event in plant re-production,tightly regulated and dependent on the lignification of the anther endothecium.In this study,we investigated the rapid lignification process that ensures timely anther dehiscence in Arabidopsis.Our findings reveal that endothecium lignification can be divided into two distinct phases.During Phase Ⅰ,lignin precursors are synthesized without polymerization,while Phase Ⅱ involves simultaneous synthesis of lignin precursors and polymerization.The transcription factors MYB26,NST1/2,and ARF17 specifically regulate the pathway responsible for the synthesis and polymerization of lignin mon-omers in Phase Ⅱ.MYB26-NST1/2 is the key regu-latory pathway responsible for endothecium lig-nification,while ARF17 facilitates this process by interacting with MYB26.Interestingly,our results demonstrate that the lignification of the endothe-cium,which occurs within approximately 26 h,is much faster than that of the vascular tissue.These findings provide valuable insights into the regulation mechanism of rapid lignification in the endothecium,which enables timely anther dehiscence and suc-cessful pollen release during plant reproduction.

外文关键词：

anther dehiscenceARF17endotheciumligninMYB26NST

作者：

Jing-Shi Xue、Yi-Feng Feng、Ming-Qi Zhang、Qin-Lin Xu、Ya-Min Xu、Jun-Qin Shi、Li-Fang Liu、Xiao-Feng Wu、Shui Wang、Zhong-Nan Yang

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作者单位：

Shanghai Key Laboratory of Plant Molecular Sciences,College of Life Sciences,Shanghai Normal University,Shanghai 200234,China

National Key Laboratory of Plant Molecular Genetics,CAS Center for Excellence in Molecular Plant Sciences,Institute of Plant Physiology and Ecology,Chinese Academy of Sciences,Shanghai 200032,China

University of the Chinese Academy of Sciences,Beijing 100049,China

Development Center of Plant Germplasm Resources,College of Life Sciences,Shanghai Normal University,Shanghai 200234,China

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出版年：

2024

DOI：

10.1111/jipb.13715

植物学报(英文版)

中国植物学会

植物学报(英文版)

CSTPCD

影响因子：0.921

ISSN：1672-9072

年,卷(期)：2024.66(8)