SPL13 controls a root apical meristem phase change by triggering oriented cell divisions

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-11-15 DOI:10.1126/science.ado4298

Baojun Yang, Yanbiao Sun, Max Minne, Yanhua Ge, Qianru Yue, Vera Goossens, Eliana Mor, Brenda Callebaut, Kevin Bevernaege, Johan M. Winne, Dominique Audenaert, Bert De Rybel

引用次数: 0

Abstract

Oriented cell divisions are crucial for determining the overall morphology and size of plants, but what controls the onset and duration of this process remains largely unknown. Here, we identified a small molecule that activates root apical meristem (RAM) expression of SQUAMOSA PROMOTER BINDING PROTEIN-LIKE13 (SPL13) a known player in the shoot’s juvenile-to-adult transition. This expression leads to oriented cell divisions in the RAM through SHORT ROOT (SHR) and cell cycle regulators. We further show that the RAM has distinct juvenile and adult phases typed by morphological and molecular characteristics and that SPL factors are crucially required for this transition in Arabidopsis and rice (Oryza sativa). In summary, we provide molecular insights into the age-dependent morphological changes occurring in the RAM during phase change.

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SPL13 通过触发定向细胞分裂来控制根尖分生组织的相变

定向细胞分裂对决定植物的整体形态和大小至关重要，但这一过程的开始和持续时间由什么控制在很大程度上仍是未知数。在这里，我们发现了一种小分子，它能激活根尖分生组织（RAM）中SQUAMOSA PROMOTER BINDING PROTEIN-LIKE13（SPL13）的表达。这种表达通过短根（SHR）和细胞周期调节因子导致 RAM 中的定向细胞分裂。我们进一步发现，RAM 有不同的幼年期和成株期，形态和分子特征各不相同，而在拟南芥和水稻（Oryza sativa）中，SPL 因子是这一转变的关键所在。总之，我们从分子角度揭示了 RAM 在相变过程中发生的与年龄相关的形态变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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