Microbial Community Structure and Function in Rhizosphere of Phyllospadix iwatensis on Shandong Coast
A study is conducted to evaluate the microbial structural characteristics and potential functions of the P.iwatensis rhizosphere using high-throughput amplicon sequencing and metagenomic sequencing on Lidao and Chang-dao Islands.Based on the results,bacteria are significantly more diverse and abundant than protozoa and fungi.Furthermore,the bacterial interaction network structure is more complex.Between the two sea areas,P.iwatensis has a significantly different microbial community structure.Bacteroides,Gammaproteobacteria,Desulfobacteria and Alphaproteobacteria dominate the bacteria community.Protist communities between Lidao and Changdao differ greatly,and unidentified protists are relatively common.Conoidasida dominate the protozoa community on Lidao,while Ulvophyceae and Phaeophyceae dominate Changdao Island.The most dominant fungi are Sorbariomycetes in both sea areas.The metagenome functional analysis reveals that P.iwatensis rhizosphere microbes are primarily in-volved in carbohydrate,amino acid,and energy metabolism.A correlation analysis of the microbial species and functions reveals that the microorganisms that contribute to the nitrogen and sulfur cycles in the seagrass rhizosphere are distributed across 17 genera.Between the two sea areas,Ilumatobacter,Sulfurovum,and Methyloceanbacter all show significant differences in abundance.In the seagrass rhizosphere,these three microbial groups are important for sulfate reduction and denitrification.This difference may be due to the nitrogen and sulfur cycles in their rhizo-spheres.This study provides a theoretical framework for the exploitation of microbial resources to restore seagrass beds.
万方数据
维普
