Structure and diversity of bacterial communities in rhizosphere soil of four plant species in Mu Us Sandy Land
To study the microbial community structure in the rhizosphere soil of four plants in Mu Us Sandy Land,reveal the relationship between plants and soil in this area,and provide a theoretical basis for the scientific management of dominant plants in Mu Us Sandy Land.In this study,four dominant plants in Mu Us Sandy Land,Hippophae rhamnoides,Ammopiptanthus mongolicus,Amorpha fruticosa,and Salix cheilophila are usrd as examples to study the bacterial structure and diversity of rhizosphere bacterium by chemical sequencing and Illumina MiSeq,and the correlation with the physiochemical properties of rhizosphere soil.A total of 319 genera of soil bacterium,belonging to 222 families,169 order,122 classes,and 41 phyla,were obtained from rhizosphere soil samples of 4 different plants.Among them,the relative abundance of Proteobacteria,Actinobacteriota,Alphaproteobacteria and Actinobacteria is higher,making them the dominant phyla and dominant class in rhizosphere of 4 plant species in Mu Us Sandy Land.The OTUS(Operational Taxonomic Units)and Shannon index of bacteria in the rhizosphere soil of H.rhamnoides are the highest,while that for the A.fruticosa are the lowest.The total number of OTUs shared by the four plants is lower than those that being unique to H.Rhamnoides and S.cheilophila,but higher than those that being unique to A.mongolicus and A.fruticosa.Soil pH and available phosphorus are the key environmental factors that affect the bacterial diversity index and community structure of plant rhizosphere soil.This study provides a theoretical basis for the protection of plants and the maintenance of species diversity in the Mu Us sandy land,and is of important significance for vegetation restoration and reconstruction in the Mu Us Sandy Land.
bacterial community diversitysoil bacteriaMu Us Sandy Landrhizosphere soil
NETL
NSTL
万方数据
