The Effects of Fungal Pathogen Infestation on Soil Microbial Communities for Cultivation on the Qinghai-Xizang Plateau.

Fungi infestation as a disease has serious impacts on the cultivation of species. To investigate the effects of fungi infestation on the microbial diversity and community structure of soil when cultivating , we sampled soil samples of cultivars in the Qinghai-Xizang Platea and used metagenome sequencing technology to identify the disease fungi and analyze the differences in microbial diversity and structure between disease-infested and healthy soils. The disease fungi identified were and , and the microbial diversity of -infected soil was higher than that of healthy soil, while the diversity of -infected soil was lower. Interestingly, whether infected with or , the soil microbial community was changed, and the dominant phyla and genera were different in different soil samples. When infected with , the dominant phyla with relatively high abundances included Proteobacteria, Bacteroidetes, and Ascomycota, with average relative abundances of 44%, 18%, and 15%, respectively, and the dominant genera with high relative abundances encompassed , , and , with average relative abundances of 8%, 9%, and 5%, respectively. Following infection with , the dominant phyla with higher relative abundances were Proteobacteria, Acidobacteria, and Bacteroidetes, with average relative abundances of 46%, 15%, and 12%, respectively, and the dominant genera with high relative abundances included , , and , with average relative abundances of 9%, 3%, and 2%, respectively. Additionally, we found that lipid-metabolism-related genes were less abundant in the soil infected with than in the other soil samples, and glycoside hydrolase diversity was lower in the soil infected with than in other healthy soils. The results showed that the effects of different disease fungi on soil microbial communities and functional genes were different, which provided a theoretical basis for the sustainable cultivation of .