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首页> 美国卫生研究院文献>Mycobiology >Influence of Peanut Cultivars and Environmental Conditions on the Diversity and Community Composition of Pod Rot Soil Fungi in China
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Influence of Peanut Cultivars and Environmental Conditions on the Diversity and Community Composition of Pod Rot Soil Fungi in China

机译：花生品种和环境条件对我国豆荚腐烂土壤真菌多样性和群落组成的影响

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摘要

Peanut yield and quality are seriously affected by pod rot pathogens worldwide, especially in China in recent years. The goals of this study are to analyze the structure of fungal communities of peanut pod rot in soil in three peanut cultivars and the correlation of pod rot with environmental variables using 454 pyrosequencing. A total of 46,723 internal transcribed spacer high-quality sequences were obtained and grouped into 1,706 operational taxonomic units at the 97% similarity cut-off level. The coverage, rank abundance, and the Chao 1 and Shannon diversity indices of the operational taxonomic units were analyzed. Members of the phylum Ascomycota were dominant, such as Fusarium, Chaetomium, Alternaria, and Sordariomycetes, followed by Basidiomycota. The results of the heatmap and redundancy analysis revealed significant variation in the composition of the fungal community among the three cultivar samples. The environmental conditions in different peanut cultivars may also influence on the structure of the fungal community. The results of this study suggest that the causal agent of peanut pod rot may be more complex, and cultivars and environmental conditions are both important contributors to the community structure of peanut pod rot fungi.
机译：全世界豆荚腐烂病原菌严重影响花生的产量和品质，尤其是近年来的中国。本研究的目的是使用454焦磷酸测序技术分析3个花生品种土壤中花生荚腐的真菌群落结构以及荚果腐烂与环境变量的相关性。共获得了46,723条内部转录间隔区高质量序列，并以97％的相似性截止水平分组为1,706个操作分类单元。分析了操作分类单元的覆盖率，等级丰度以及Chao 1和Shannon多样性指数。子囊门的成员占主导地位，例如镰刀菌属，毛壳菌属，链格孢属和拟兽疫菌，其次是担子菌科。热图和冗余分析的结果表明，三个品种样品之间的真菌群落组成存在显着差异。不同花生品种的环境条件也可能影响真菌群落的结构。这项研究的结果表明，花生荚腐病的病因可能更复杂，栽培品种和环境条件都是花生荚腐病真菌群落结构的重要贡献者。

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