Making sense of hormone-mediated defense networking: from rice to Arabidopsis.

Making sense of hormone-mediated defense networking: from rice to Arabidopsis.
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DOI:
10.3389/fpls.2014.00611
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发表时间:
2014
影响因子:
5.6
通讯作者:
Höfte M
Höfte M
中科院分区:
生物学2区
文献类型:
--
作者:
De Vleesschauwer D;Xu J;Höfte M

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植物激素不仅对植物的生长发育至关重要,而且在触发植物免疫信号网络中起着重要作用。从历史上看,旨在阐明激素的防御相关作用的研究往往集中在使用实验上易处理的双子叶植物,如拟南芥。从这些研究中出现的是一幅复杂的串扰和诱导的激素变化塑造植物健康和疾病的画面,其结果在很大程度上取决于入侵病原体的生活方式和感染策略。然而,最近对单子叶植物的研究开始为激素的免疫调节作用提供额外的重要见解,通常揭示了独特的复杂性。在这篇综述中,我们解决了最新的发现,处理水稻,最重要的粮食作物之一,在单子叶植物分子遗传学研究的一个很好的模式,介导的免疫。此外,我们强调激素信号,水稻防御和病原菌毒力之间的相互作用,并讨论了与拟南芥中的发现的差异和相似之处。最后,我们提出了一个水稻激素防御网络模型,并描述了如何详细了解激素串扰机制可以用于工程持久的水稻抗病性。
Phytohormones are not only essential for plant growth and development but also play central roles in triggering the plant immune signaling network. Historically, research aimed at elucidating the defense-associated role of hormones has tended to focus on the use of experimentally tractable dicot plants such as Arabidopsis thaliana. Emerging from these studies is a picture whereby complex crosstalk and induced hormonal changes mold plant health and disease, with outcomes largely dependent on the lifestyle and infection strategy of invading pathogens. However, recent studies in monocot plants are starting to provide additional important insights into the immune-regulatory roles of hormones, often revealing unique complexities. In this review, we address the latest discoveries dealing with hormone-mediated immunity in rice, one of the most important food crops and an excellent model for molecular genetic studies in monocots. Moreover, we highlight interactions between hormone signaling, rice defense and pathogen virulence, and discuss the differences and similarities with findings in Arabidopsis. Finally, we present a model for hormone defense networking in rice and describe how detailed knowledge of hormone crosstalk mechanisms can be used for engineering durable rice disease resistance.
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