College of Life Sciences, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Cell Biology and Plant Biochemistry, University of Regensburg, 93053 Regensburg, Germany.
Curr Opin Plant Biol. 2023 Oct;75:102439. doi: 10.1016/j.pbi.2023.102439. Epub 2023 Aug 19.
Germline specification is a fundamental process in plant reproduction, and the Megaspore Mother Cell (MMC), is a critical cell that differentiates and develops into the female gametophyte. While numerous studies have investigated the molecular mechanisms underlying female germline specification, previous reviews have mainly focused on gene regulatory networks, epigenetic pathways, and small RNAs, neglecting the potential contribution of phytohormones to this process. This review aims to address this gap by highlighting recent advances in MMC formation and discussing the roles of specific phytohormones in female germline specialization. Here, we provide a comprehensive overview of the functions of phytohormones in the formation of MMC and their effects on female gametophyte development. Specifically, it examines the roles of gibberellins (GAs), brassinosteroids (BRs), auxins, and cytokinin, in MMC development. Understanding the function of phytohormones in MMC development is essential for comprehending the complex mechanisms underlying plant reproduction. This review adds valuable insights to the existing knowledge on MMC development, providing a new perspective for future research in the field of plant reproduction.
生殖细胞的特化是植物繁殖的一个基本过程，而大孢子母细胞（MMC）是一个关键的细胞，它会分化并发育成雌性配子体。虽然有许多研究已经调查了雌性生殖细胞特化的分子机制，但以前的综述主要集中在基因调控网络、表观遗传途径和小 RNA 上，忽略了植物激素对这个过程的潜在贡献。本综述旨在通过强调 MMC 形成的最新进展来解决这一差距，并讨论特定植物激素在雌性生殖细胞特化中的作用。在这里，我们提供了一个关于植物激素在 MMC 形成中的功能及其对雌性配子体发育影响的综合概述。具体来说，我们研究了赤霉素（GAs）、油菜素内酯（BRs）、生长素和细胞分裂素在 MMC 发育中的作用。理解植物激素在 MMC 发育中的功能对于理解植物繁殖的复杂机制至关重要。本综述为 MMC 发育的现有知识增添了有价值的见解，为植物繁殖领域的未来研究提供了新的视角。
