Jasmonates: what ALLENE OXIDE SYNTHASE does for plants

First author: Edward E Farmer; Affiliations: University of Lausanne (洛桑大学): Lausanne, Switzerland

Corresponding author: Alain Goossens

Most of the great diversity of oxylipins in plants is produced by a group of specialized cytochrome P450 enzymes, among which is ALLENE OXIDE SYNTHASE (AOS). Many AOSs generate precursors of the defense hormone jasmonate. As a consequence, aos mutants fail to defend themselves against herbivores and do not display restriction of vegetative growth when wounded. These links between growth and defense that are controlled by AOS-derived oxylipins are ancient. Here, we focus on oxylipin-regulated coordination of growth/defense, how this optimizes defense, and how a plant’s need for light can override jasmonate activity. AOS-derived oxylipins are candidate regulators throughout land plant evolution.

植物中，氧化脂类的多样性大多由一类特定的细胞色素P450酶产生，丙二烯氧化物合酶（AOS）正是其中之一。许多AOS酶能够生成植物的防御性激素茉莉酸的前体。因此，aos突变体对于食草动物的防御存在缺陷，并且在受伤之时营养生长不会受到限制。这种由源自AOS的氧化脂质所控制的生长和防御之间的关系是古老的。本文中，作者主要关注氧化脂质所调控的生长和防御之间的协调，如何最大化植物的防御系统，以及植物对于光的需求如何凌驾于茉莉酸的活性。源自于AOS的氧化脂质可能是陆地植物演化的重要调控因子。

通讯：Alain Goossens (http://www.vib.be/en/research/scientists/Pages/Alain-Goossens-Lab.aspx)

个人简介：1998年，根特大学，博士。

研究方向：植物中的茉莉酸信号网络。

doi: https://doi.org/10.1093/jxb/erz254

Journal: Journal of Experimental Botany

Published date: June 05, 2019