ZINC FINGER PROTEIN2 suppresses funiculus lignification to ensure seed loading efficiency in Arabidopsis

IF 10.7 1区生物学 Q1 CELL BIOLOGY Developmental cell Pub Date : 2025-02-24 DOI:10.1016/j.devcel.2025.01.021

Pui Man Low, Que Kong, Leonard Blaschek, Zhiming Ma, Peng Ken Lim, Yuzhou Yang, Trisha Quek, Cuithbert J.R. Lim, Sanjay K. Singh, Christoph Crocoll, Ellen Engquist, Jakob S. Thorsen, Sitakanta Pattanaik, Wan Ting Tee, Marek Mutwil, Yansong Miao, Ling Yuan, Deyang Xu, Staffan Persson, Wei Ma

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Abstract

The plant funiculus anchors the developing seed to the placenta within the inner dorsal pod strands of the silique wall and directly transports nutrients to the seeds. The lignified vasculature critically supports nutrient transport through the funiculus. However, molecular mechanisms underlying lignified secondary cell wall (SCW) biosynthesis in the funiculus remain elusive. Here, we show that the transcription factor ZINC FINGER PROTEIN2 (ZFP2) represses SCW formation in the cortex cells that surround the vasculature. This function is essential for efficient nutrient loading into the seeds. Notably, ZFP2 directly acts on the SCW transcription factor NAC SECONDARY WALL THICKENING PROMOTING FACTOR1 (NST1) to repress cortex cell lignification, providing a mechanism of how SCW biosynthesis is restricted to the vasculature of the funiculus to ensure proper seed loading in Arabidopsis.

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来源期刊

Developmental cell 生物-发育生物学

CiteScore

18.90

自引率

1.70%

发文量

203

审稿时长

3-6 weeks

期刊介绍： Developmental Cell, established in 2001, is a comprehensive journal that explores a wide range of topics in cell and developmental biology. Our publication encompasses work across various disciplines within biology, with a particular emphasis on investigating the intersections between cell biology, developmental biology, and other related fields. Our primary objective is to present research conducted through a cell biological perspective, addressing the essential mechanisms governing cell function, cellular interactions, and responses to the environment. Moreover, we focus on understanding the collective behavior of cells, culminating in the formation of tissues, organs, and whole organisms, while also investigating the consequences of any malfunctions in these intricate processes.