Rhizosphere Soil Bacterial Community Structure and Diversity of Four Typical Plants in the Water Level Fluctuation Zone
Abstract
The aim of this study was to provide a reference for riparian wetland resource management and ecological restoration of mountain reservoir in Zhejiang province. The soil fungal community structure is critical toward maintaining the function of the wetland ecology. To investigate rhizosphere soil fungal community structure and diversity of four dominate plantsn (i.e., Miscanthus floridulus, Pterocaryastenoptera, Salix babylonica, Taxodium distichum) growing in wetlands of water-level-fluctuation zone of Changtan reservoir, we sequenced and analyzed their structure and composition using Illumina sequencing of the internal transcribed spacer 2 (ITS2) region. The results indicated that 7 phylums, 26 classes, 68 orders, 137 families, 248 genuses and 331species of fungal were obtained, with Ascomycota Basidiomycota and Eygomycota being the dominant phylum, and Dothideomyteces, Agaricomycetes and Sordariomycetes being the dominant class in the rhizosphere soils of different plants growing in wetlands of water-level-fluctuation zone of mountain reservoir in Zhejiang province. The soil fungal community structure of Salix babylonica was more similarto Miscanthus floridulus at phylum level, while that of Taxodium distichum was different from other three plants significantly. The soil bacteria community structure of Salix babylonica was more similar to Miscanthus floridulus at phylum level, while that of Taxodium distichum was different from other three plants significantly. The Shannon index and chao1 index of the rhizosphere soil fungal of Pterocaryastenoptera were 6.67 and 770.44, respectively, which were the highest among the four plants, and that of Taxodium distichum were the lowest, with 2.59 and 403.96, respectively. The fungal structures in rhizosphere soil of the four plants were similar, but there was a significant difference in the relative abundance of some fungal at the phylum and class levels.
