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首页> 美国卫生研究院文献>PLoS Clinical Trials >Microbiota Characterization of Compost Using Omics Approaches Opens New Perspectives for Phytophthora Root Rot Control
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Microbiota Characterization of Compost Using Omics Approaches Opens New Perspectives for Phytophthora Root Rot Control

机译：使用组学方法对堆肥进行微生物菌群鉴定为疫霉根腐病防治开辟了新视野

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Phytophthora root rot caused by Phytophthora nicotianae is an economically important disease in pepper crops. The use of suppressive composts is a low environmental impact method for its control. Although attempts have been made to reveal the relationship between microbiota and compost suppressiveness, little is known about the microorganisms associated with disease suppression. Here, an Ion Torrent platform was used to assess the microbial composition of composts made of different agro-industrial waste and with different levels of suppressiveness against P. nicotianae. Both bacterial and fungal populations responded differently depending on the chemical heterogeneity of materials used during the composting process. High proportions (67–75%) of vineyard pruning waste were used in the most suppressive composts, COM-A and COM-B. This material may have promoted the presence of higher relative abundance of Ascomycota as well as higher microbial activity, which have proved to be essential for controlling the disease. Although no unique fungi or bacteria have been detected in neither suppressive nor conducive composts, relatively high abundance of Fusarium and Zopfiella were found in compost COM-B and COM-A, respectively. To the best of our knowledge, this is the first work that studies compost metabolome. Surprisingly, composts and peat clustered together in principal component analysis of the metabolic data according to their levels of suppressiveness achieved. This study demonstrated the need for combining the information provided by different techniques, including metagenomics and metametabolomics, to better understand the ability of compost to control plant diseases.
机译：由烟草疫霉引起的疫霉根腐病是辣椒作物中一种重要的经济疾病。使用抑制性堆肥是控制环境的一种低环境方法。尽管已尝试揭示微生物群与堆肥抑制性之间的关系，但对与疾病抑制相关的微生物知之甚少。在这里，离子洪流平台被用来评估由不同的农业工业废料和不同程度的对烟草假单胞菌的抑制作用制成的堆肥的微生物组成。细菌和真菌种群的反应不同，这取决于堆肥过程中所用材料的化学异质性。在抑制性最强的堆肥COM-A和COM-B中使用了高比例（67-75％）的葡萄园修剪废弃物。该物质可能促进了子囊菌相对较高的丰度以及较高的微生物活性，这已被证明对控制该疾病至关重要。尽管在抑制性和有益性堆肥中均未检测到独特的真菌或细菌，但堆肥COM-B和COM-A中分别发现了相对较高的镰刀菌和Zopfiella菌。据我们所知，这是研究堆肥代谢组的第一项工作。出乎意料的是，堆肥和泥炭根据其抑制水平而在代谢数据的主成分分析中聚集在一起。这项研究表明需要结合不同技术提供的信息，包括宏基因组学和超代谢组学，以更好地了解堆肥控制植物病害的能力。

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