生长素是如何促进细胞伸长的？生长素结合蛋白和钾离子通道在生长控制中的作用。

How does auxin enhance cell elongation? Roles of auxin-binding proteins and potassium channels in growth control.

作者信息

Christian M, Steffens B, Schenck D, Burmester S, Böttger M, Lüthen H

机构信息

Biozentrum Klein Flottbek, Physiologie, Universität Hamburg, Ohnhorststrasse 18, 22609 Hamburg, Germany.

出版信息

Plant Biol (Stuttg). 2006 May;8(3):346-52. doi: 10.1055/s-2006-923965.

DOI:10.1055/s-2006-923965

PMID:16807827

Abstract

Elongation growth and a several other phenomena in plant development are controlled by the plant hormone auxin. A number of recent discoveries shed light on one of the classical problems of plant physiology: the perception of the auxin signal. Two types of auxin receptors are currently known: the AFB/TIR family of F box proteins and ABP1. ABP1 appears to control membrane transport processes (H+ secretion, osmotic adjustment) while the TIR/AFBs have a role in auxin-induced gene expression. Models are proposed to explain how membrane transport (e.g., K+ and H+ fluxes) can act as a cross-linker for the control of more complex auxin responses such as the classical stimulation of cell elongation.

摘要

植物发育过程中的伸长生长以及其他一些现象受植物激素生长素调控。最近的一些发现为植物生理学的一个经典问题——生长素信号的感知，提供了新的线索。目前已知有两种类型的生长素受体：F 盒蛋白的 AFB/TIR 家族和 ABP1。ABP1 似乎控制膜运输过程（H⁺分泌、渗透调节），而 TIR/AFBs 在生长素诱导的基因表达中起作用。有人提出了一些模型来解释膜运输（例如 K⁺和 H⁺通量）如何作为一种交联剂，来控制更复杂的生长素反应，如经典的细胞伸长刺激。