花药中绒毡层和小孢子细胞的特化。

Specification of tapetum and microsporocyte cells within the anther.

机构信息

State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.

出版信息

Curr Opin Plant Biol. 2014 Feb;17:49-55. doi: 10.1016/j.pbi.2013.11.001. Epub 2013 Dec 3.

DOI:10.1016/j.pbi.2013.11.001

PMID:24507494

Abstract

Flowering plants form male reproductive cells (microsporocytes) during sporophytic generation, which subsequently differentiate into multicellular male gametes in the gametophytic generation. The tapetum is a somatic helper tissue neighboring microsporocytes and supporting gametogenesis. The mechanism controlling the specification of the tapetum and microsporocyte cell fate within the anther has long been a mystery in biology. Recent investigations have revealed molecular switches and signaling pathways underlying the establishment of somatic and reproductive cells in plants. In this review we discuss common and diversified signaling molecules and regulatory pathways including receptor-like protein kinases, redox status, glycoprotein, transcription factors, hormones and microRNA implicated in the specification of tapetum and microsporocytes in plants.

摘要

开花植物在孢子体世代形成雄性生殖细胞（小孢子母细胞），随后在配子体世代分化为多细胞雄性配子。绒毡层是一种紧邻小孢子母细胞并支持配子体发生的体细胞辅助组织。长期以来，控制花药中绒毡层和小孢子母细胞命运特化的机制一直是生物学中的一个谜。最近的研究揭示了植物体细胞和生殖细胞建立的分子开关和信号通路。在这篇综述中，我们讨论了参与植物绒毡层和小孢子母细胞特化的常见和多样化的信号分子和调控途径，包括受体样蛋白激酶、氧化还原状态、糖蛋白、转录因子、激素和 microRNA。