| Abstrakt: |
In order to clarify the characteristics of fungal diversity on the surface of green walnuts, the composition of fungal communities and their diversity on the surface of green walnuts were analyzed by high-throughput sequencing using 'Green Ridge No.1' green walnuts as test material. FUNGuild database was used to predict the ecological functions of fungal communities. The results showed that, there were 4 phyla, 14 classes, 12 orders, 18 families and 18 genera of fungi on the surface of green walnuts. Ascomycota was the main fungal phylum on the surface of green walnut, with a relative abundance of 97%, and the main genera were Botryosphaeria, Colletotrichum, Hanseniaspora, Alternaria, Clonostachys, Diaporthe, and Fusarium. Fungi FUNGuild function prediction results showed that there were mainly pathotrophic fungi (pathotroph), followed by saprophytic nutrient type on the green walnuts after harvest, accounted for 28.42% and 18.94%, respectively. High-throughput sequencing technology was used to identify the main group of green walnut rot pathogens, which provides a theoretical basis for the prevention and treatment of green walnut rot disease. [ABSTRACT FROM AUTHOR] |
