Abstract:

The diversity of fungal communities is an important evaluation indicator for the environmental quality and health of cultivated soil. In this study, four vegetable (onion,ginger,strawberry,cucumber) soils were investigated to analyze the physical and chemical properties as well as the composition and diversity of fungal communities via Quantitative Polymerase Chain Reaction and high-throughput sequencing.The results showed that the fungal abundance inonion soil was the lowest and significantly different from that in the other three crops (strawberry,cucumber,ginger;P< 0.05).The Shannon index and OTUs of the onion and ginger soil were high, indicating higher fungal diversity,whereas the Shannon index and OTUs of cucumber and strawberry were low, indicating lower diversity. The relative abundances of Ascomycota,Basidiomycota, and Mortierellomycota were higher, with the relative abundance of Ascomycota being especially high in diseased soil. Soil fungal communities were affected by environmental factors, with pH and available phosphorus having the greatest influence.These results provided a theoretical basis for clarifying the relationship between the diversity of fungal communities and the quality of vegetable soil,which helped in improving the ecological quality of vegetable soil.

Key words: vegetable soil, fungal communities, diversity, high-throughput sequencing, redundancy analysis