根寄生植物中寄主诱导萌发的机制。
The mechanism of host-induced germination in root parasitic plants.
机构信息
Department of Botany and Plant Sciences, University of California, Riverside, CA 92521 USA.
出版信息
Plant Physiol. 2021 Apr 23;185(4):1353-1373. doi: 10.1093/plphys/kiab043.
Abstract
Chemical signals known as strigolactones (SLs) were discovered more than 50 years ago as host-derived germination stimulants of parasitic plants in the Orobanchaceae. Strigolactone-responsive germination is an essential adaptation of obligate parasites in this family, which depend upon a host for survival. Several species of obligate parasites, including witchweeds (Striga, Alectra spp.) and broomrapes (Orobanche, Phelipanche spp.), are highly destructive agricultural weeds that pose a significant threat to global food security. Understanding how parasites sense SLs and other host-derived stimulants will catalyze the development of innovative chemical and biological control methods. This review synthesizes the recent discoveries of strigolactone receptors in parasitic Orobanchaceae, their signaling mechanism, and key steps in their evolution.
摘要
化学信号被称为独脚金内酯（SLs），它们在 50 多年前被发现，是列当科寄生植物的宿主来源的萌发刺激物。独脚金内酯响应的萌发是这个科中专性寄生植物的一个基本适应，它们依赖宿主才能生存。包括列当属（Striga，Alectra spp.）和肉苁蓉属（Orobanche，Phelipanche spp.）在内的几种专性寄生植物是极具破坏性的农业杂草，对全球粮食安全构成了重大威胁。了解寄生虫如何感知 SLs 和其他宿主来源的刺激物，将有助于开发创新的化学和生物防治方法。本综述综合了最近在寄生列当科中发现的独脚金内酯受体、它们的信号传导机制，以及它们进化过程中的关键步骤。
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