Rhizosphere fungal community structure succession of Xinjiang continuously cropped cotton
2019
Wei, Zhang | Yu, Du
The large-scale long-term plantation of cotton in the Xinjiang region has been accompanied by a regular and wide outbreak of soil-borne fungal diseases such as verticillium wilt, which significantly damaged the local cotton industry. High-throughput sequencing data showed that the cotton field cultivation management measures pose a significant influence upon the original ecological soil fungal community structure. During long-term continuous cropping of cotton, a new soil fungal community structure emerges after several repeated adjustments over five years. The number of verticillium wilt pathogens in the soil increased rapidly with prolonged continuous cropping time, reaching a maximum at around the 10th y; moreover, the abundance of the verticillium wilt pathogen only serves as one of numerous essential factors for disease occurrence. The fungal community structure and the abundance of verticillium wilt pathogens in local cotton fields are gradually formed under joint effects of year-long continuous cropping and supporting cultivation management measures.
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