ZMBP-Center for Plant Molecular Biology, Auf der Morgenstelle 32, 72070 Tübingen, Germany.
ZMBP-Center for Plant Molecular Biology, Auf der Morgenstelle 32, 72070 Tübingen, Germany.
Curr Opin Plant Biol. 2017 Feb;35:145-151. doi: 10.1016/j.pbi.2016.12.002. Epub 2016 Dec 22.
Secondary growth, the increase in girth of plant organs, is primarily driven by the vascular and cork cambium. In perennial dicotyledons and gymnosperms, it represents a major source of biomass accumulation in the form of wood. However, the molecular framework underlying secondary growth is largely based on studies in the annual herbaceous plant Arabidopsis thaliana. In this review, we will focus on a selection of major regulators of stem secondary growth, which have recently been shown to play a role in woody species. In particular, we will focus on thermospermine and its bivalent role in controlling xylem differentiation and cell proliferation and we will highlight the contributions of the different LRR-Receptor-Like Kinase signaling hubs.
次生生长是植物器官直径的增加，主要由维管形成层和木栓形成层驱动。在多年生双子叶植物和裸子植物中，它是木材形式生物量积累的主要来源。然而，次生生长的分子框架主要基于一年生草本植物拟南芥的研究。在这篇综述中，我们将重点介绍茎次生生长的一些主要调节剂，这些调节剂最近被证明在木本物种中起作用。特别是，我们将重点介绍热稳定素及其在控制木质部分化和细胞增殖方面的双重作用，并强调不同 LRR-受体样激酶信号枢纽的贡献。
