Comparsion of bark fungal communities in three types of forest fruits with canker disease
[Objective]The study aimed to investigate the effect on fungal communities after the occurrence of canker disease in branches of walnut and apple trees as well as poplar trees in Xinjiang,and to provide a reference basis for microbial control of canker disease.[Method]Based on the high-throughput ITS amplicon sequencing method,we analyzed the changes of fungal community structure and resolved the rela-tionship between canker disease and microbial community in the cortex of branches after the occurrence of canker disease in three kinds of forest fruits,respectively,using the healthy branches of three kinds of forest fruits as controls.[Result]According to the fungal diversity re-sults,the diversity and abundance of healthy samples of the three forest fruits were greater than those of the diseased samples,suggesting that the disease had an effect on the cortical fungal community.Species annotation results showed that,at the phylum level,the dominant fungal phylum in the healthy and infected branch cortex of walnut,apple and poplar trees was Ascomycota.At the genus level,the dominant genus in the healthy branch cortex(WH)of walnut was Alternaria,and the dominant genus in the infected cortex(WD)was Cryptosphaeria;The dominant genus in the healthy branch cortex(PH)of poplar was Mycosphaerella,and the dominant genus in the infected cortex(PD)was Valsa.The dominant genus in the healthy branch cortex(AH)of apple trees was Didymella,and the dominant genera in the affected cortex(AD)were Fomes and Valsa.[Conclusion]The above studies showed that the structure of the cortical fungal community of the three forest fruits where the canker disease occurred was altered,which provided some theoretical basis for the control of plant diseases based on changes in the microbial community.
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