甘肃野生羊肚菌根际土壤真菌群落与环境因子相互关系

为探究甘肃不同采样点野生羊肚菌根际土壤中真菌群落结构以及真菌群落与环境因子的相关性,采用Illumina Mi-Seq高通量测序技术和生物信息学方法,分析真菌菌群组成和多样性,揭示真菌群落与环境因子的相互关系.结果表明,不同采样点的根际土壤中真菌群落差异较大;9个采样点共有的OTU(operational taxono...

Relationship between Fungal Community and Environmental Factors in Rhizosphere Soil around Wild Morels in Gansu

This study aiming at exploring the reciprocity between fungal community structure as well as fungal community and environmental factors (FC-SEF) of wild morels in different sampling spots in Gansu Province. Illumina Mi-Seq high-throughput sequencing technology and informatics method were adopted to analyze the composition and diversity of fungal community, and reveal the reciprocity between fungal community and environmental factors. The results showed that there was wide difference among rhizosphere fungi from different sampling spots; there were a total of 32 OTU (operational taxonomic unit) from nine sampling spots, there were more peculiar OTU there; the diversity of morel rhizosphere soil fungi in overlapping sampling points was the highest. The dominant fungal phylum of all sampling spots was subphylum of ascomycetes and subphylum of basidiomycetes, and the dominant groups at class, family, and species level differ from each other. Redundancy analysis showed that the subphylum of ascomycetes accorded with the direction of arrow point of quick-acting potassium, glutaminase, urease, nitrate nitrogen, alkaline phosphatase, and dehydrogenase, showed that the subphylum of ascomycetes was positive correlation with quick-acting potassium, glutaminase, urease, nitrate nitrogen, alkaline phosphatase, and dehydrogenase. Rozellomycota and Olpidiomycota are positively correlated with Se, Fe content, available phosphorus, ammonia nitrogen, and dehydrogenase, but are negatively correlated with Ca, Mg content, pH value, and Peroxidase. Chytridiomycota, unclassified Fungi, and Mortierellomycota are negatively correlated with dehydrogenase, alkaline phosphatase and nitrate. Fungal communities in the rhizosphere soil of wild morels are more affected by enzyme activity than by physical and chemical factors.