The mechanism of host-induced germination in root parasitic plants
The mechanism of host-induced germination in root parasitic plants
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DOI：
10.1093/plphys/kiab043
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发表时间：
2021-02-03
期刊：
影响因子：
7.4
通讯作者：
Nelson, David C.
中科院分区：
文献类型：
--
作者：
Nelson, David C.
50 多年前，人们发现了一种名为独脚金内酯 (SL) 的化学信号，它是列当科寄生植物源自宿主的发芽刺激剂。独脚金内酯反应性萌发是该科专性寄生虫的重要适应，其生存依赖于宿主。几种专性寄生虫，包括巫草（Striga、Alectra spp.）和列当（Orobanche、Phelipanche spp.），是极具破坏性的农业杂草，对全球粮食安全构成重大威胁。了解寄生虫如何感知 SL 和其他宿主衍生的兴奋剂将促进创新化学和生物控制方法的发展。这篇综述综合了寄生列当科中独脚金内酯受体的最新发现、它们的信号传导机制以及它们进化的关键步骤。
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.