The 2D to 3D growth transition in the moss Physcomitrella patens.

The 2D to 3D growth transition in the moss Physcomitrella patens.
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苔藓小立碗藓 (Physcomitrella patens) 的 2D 到 3D 生长转变。

DOI:
10.1016/j.pbi.2018.10.001
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发表时间:
2019
影响因子:
9.5
通讯作者:
Moody LA
Moody LA
中科院分区:
生物学2区
文献类型:
--
作者:
Moody LA

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植物的三维生长与陆地定殖是一致的。展叶原花青素是研究三维生长的理想模式生物。2D侧分支原始细胞在形态上不同于3D侧分支原始细胞。APB基因是2D向3D生长转变的中心调控基因。CESA 5、DEK 1、NOG1和CLAVATA基因是这一转变的重要调控因子,植物的土地定殖与三维生长的进化相一致,并很可能受到三维生长进化的促进。3D生长是所有陆地植物的一个关键特征,但大多数植物的生长方式排除了遗传研究。在苔藓小立碗藓中,3D生长(配子体)之前是一个扩展的二维(2D)生长阶段(原丝体),可以无限繁殖。因此,使用P. patens的研究阐明了3D生长调节的一些分子机制。本文综述了配子体初始细胞形成和配子体三维生长发育的分子机制。
Highlights3D growth in plants evolved coincident with the colonization of land.P. patens is an ideal model organism in which to genetically dissect 3D growth.2D side branch initials are morphologically distinct from 3D side branch initials.The APB genes are central regulators of the 2D to 3D growth transition.CESA5, DEK1, NOG1 and CLAVATA genes are important regulators of this transition.The colonization of land by plants coincided with and was most likely facilitated by the evolution of 3-dimensional (3D) growth. 3D growth is a pivotal feature of all land plants, but most develop in a way that precludes genetic investigation. In the moss Physcomitrella patens, 3D growth (gametophores) is preceded by an extended 2-dimensional (2D) growth phase (protonemata) that can be propagated indefinitely. Studies using P. patens have thus elucidated some of the molecular mechanisms underlying 3D growth regulation. This review summarizes the known molecular mechanisms underlying both the formation of gametophore initial cells and the development of the 3D growth in gametophores.
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