Role of phytohormones in insect-specific plant reactions.

Role of phytohormones in insect-specific plant reactions.
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DOI:
10.1016/j.tplants.2012.01.003
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发表时间:
2012-05
影响因子:
20.5
通讯作者:
Howe, Gregg A.
Howe, Gregg A.
中科院分区:
生物学1区
文献类型:
--
作者:
Erb, Matthias;Meldau, Stefan;Howe, Gregg A.

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感知和反应能力是生物免疫系统不可或缺的一部分,但植物对昆虫的特异性识别和反应能达到什么程度呢?最近的研究结果表明,植物具有监视系统,能够检测到细胞损伤的一般模式,以及高度特异性的草食相关线索。茉莉酸(jasmonate, JA)通路作为一种主要的信号盒,将植物-昆虫界面感知到的信息整合到广谱防御反应中。特异性可以通过与ja无关的过程和ja调节激素的时空变化来实现,包括乙烯、水杨酸、脱落酸、生长素、细胞分裂素、油菜素内酯和赤霉素。受体和配体的鉴定以及激素介导的反应系统的综合观点对于理解植物对食草动物免疫的特异性至关重要。
The capacity to perceive and respond is integral to biological immune systems, but to what extent can plants specifically recognize and respond to insects? Recent findings suggest that plants possess surveillance systems that are able to detect general patterns of cellular damage as well as highly specific herbivore-associated cues. The jasmonate (JA) pathway has emerged as the major signaling cassette that integrates information perceived at the plant–insect interface into broad-spectrum defense responses. Specificity can be achieved via JA-independent processes and spatio-temporal changes of JA-modulating hormones, including ethylene, salicylic acid, abscisic acid, auxin, cytokinins, brassinosteroids and gibberellins. The identification of receptors and ligands and an integrative view of hormone-mediated response systems are crucial to understand specificity in plant immunity to herbivores.
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