From Player to Pawn: Viral Avirulence Factors Involved in Plant Immunity.

From Player to Pawn: Viral Avirulence Factors Involved in Plant Immunity.
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从玩家到棋子:参与植物免疫的病毒无毒因子。

DOI:
10.3390/v13040688
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发表时间:
2021-04-16
期刊:
Viruses
影响因子:
--
通讯作者:
Huang C
Huang C
中科院分区:
其他
文献类型:
--
作者:
Huang C

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在植物免疫系统中,根据“基因对基因”模型,植物中的抗性(R)基因产物特异性地监视起无毒(Avr)基因产物作用的相应效应蛋白。该系统不同于其他植物-病原体互作系统,在这些系统中,植物R基因识别单一类型的基因或基因家族,因为几乎所有具有不同结构和功能的病毒基因也可以作为Avr决定簇与R基因相互作用。因此,对病毒Avr-R系统进行的研究可以提供对Avr和R基因产物相互作用的新理解,并确定使植物和植物病原体快速共同进化的机制。本文综述了病毒编码蛋白及其在植物抗病性中的作用,并对目前植物抗病毒Avr基因的研究进展进行了综述。此外,我们目前的应用Avr基因介导的表型在R基因的鉴定和筛选分离群体在育种过程中。
In the plant immune system, according to the ‘gene-for-gene’ model, a resistance (R) gene product in the plant specifically surveils a corresponding effector protein functioning as an avirulence (Avr) gene product. This system differs from other plant–pathogen interaction systems, in which plant R genes recognize a single type of gene or gene family because almost all virus genes with distinct structures and functions can also interact with R genes as Avr determinants. Thus, research conducted on viral Avr-R systems can provide a novel understanding of Avr and R gene product interactions and identify mechanisms that enable rapid co-evolution of plants and phytopathogens. In this review, we intend to provide a brief overview of virus-encoded proteins and their roles in triggering plant resistance, and we also summarize current progress in understanding plant resistance against virus Avr genes. Moreover, we present applications of Avr gene-mediated phenotyping in R gene identification and screening of segregating populations during breeding processes.
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