Effects of Continuous Cropping on Melon Rhizosphere Soil Bacterial Diversity and Community Structure
This study aims to understand the microecological mechanism of continuous cropping of melons and provide reference for preventing and managing continuous cropping obstacles.High-throughput sequencing was used to study the bacterial diversity and community structure in the rhizosphere soil of melons with different continuous cropping years.The results showed that with the increasing duration of continuous cropping,the bacterial diversity index and richness index first increased and then decreased.A total of 35 phyla and 60 genera of bacteria were obtained from the four melon soil samples.There were six dominant phyla:Proteobacteria,Acidobacteriota,Gemmatimonadota,Actinobacteria,unclassified Bacteria and Bacteroidota.Among them,the abundance of Proteobacteria and Bacteroidetes first increased and then decreased,the abundance of Actinobacteria showed a gradual decreasing trend,and the abundance of Acidobacteria,Gemmonadas,unclassified-Bacteria and Chloroflexi first decreased and then increased.The dominant genera were unclassified Gemmatimonadaceae,unclassified-Bacteria,unclassified-Vicinamibacteraceae,unclassified-Vicinamibacterales,Subgroup-10,Lysobacter,Sphingomonas,Pseudomonas and Nitrospira.
high-throughput sequencing technologymeloncontinuous croppingbacterial community structurebacterial diversity
万方数据
维普
