Li Ningxiao, Alfiky Alsayed, Wang Wenzhao, Islam Md, Nourollahi Khoshnood, Liu Xingzhong, Kang Seogchan
Intercollege Graduate Degree Program in Plant Biology, Pennsylvania State University, University Park, PA, United States.
Department of Plant Pathology and Environmental Microbiology, Pennsylvania State University, University Park, PA, United States.
Front Microbiol. 2018 Oct 31;9:2614. doi: 10.3389/fmicb.2018.02614. eCollection 2018.
Certain strains protect plants from diverse pathogens using multiple mechanisms. We report a novel mechanism that may potentially play an important role in -based biocontrol. and significantly increased the amount/activity of secreted antifungal metabolites in response to volatile compounds (VCs) produced by 13 strains of , a soilborne fungus that infects diverse plants. This response suggests that both spp. recognize the presence of by sensing pathogen VCs and prepare for attacking pathogens. However, did not respond to any, while responded to VCs from only a few strains. Gene expression analysis via qPCR showed up-regulation of several biocontrol-associated genes in in response to VCs. Analysis of VCs from seven strains tentatively identified a total of 28 compounds, including six that were produced by all of them. All four species produced VCs that inhibited growth. Analysis of VCs produced by and revealed the production of compounds that had been reported to display antifungal activity. also recognizes spp. by sensing their VCs and releases VCs that inhibit , suggesting that both types of VC-mediated interaction are common among fungi.
某些菌株通过多种机制保护植物免受多种病原体侵害。我们报道了一种新机制，该机制可能在基于[具体内容缺失]的生物防治中发挥重要作用。[具体内容缺失]和[具体内容缺失]显著增加了分泌的抗真菌代谢产物的量/活性，以响应由13种[具体内容缺失]菌株产生的挥发性化合物（VCs），[具体内容缺失]是一种感染多种植物的土传真菌。这种反应表明，[具体内容缺失]两个物种都通过感知病原体VCs识别[具体内容缺失]的存在，并准备攻击病原体。然而，[具体内容缺失]对任何[具体内容缺失]都没有反应，而[具体内容缺失]仅对少数菌株的VCs有反应。通过qPCR进行的基因表达分析表明，[具体内容缺失]中几个与生物防治相关的基因在响应[具体内容缺失]VCs时上调。对来自七种[具体内容缺失]菌株的VCs分析初步鉴定出总共28种化合物，其中六种是所有菌株都产生的。所有四种[具体内容缺失]物种产生的VCs都抑制[具体内容缺失]生长。对[具体内容缺失]和[具体内容缺失]产生的VCs分析揭示了已报道具有抗真菌活性的化合物的产生。[具体内容缺失]也通过感知其VCs识别[具体内容缺失]物种，并释放抑制[具体内容缺失]的VCs，这表明两种类型的VC介导的相互作用在真菌中很常见。
