Studies On The Bacterial Species Diversity In Lake Poyang

In this study,bacterial community compositions in the northern and southern water area of Lake Poyang were analyzed firstly by 16S rDNA sequence analysis. The main conclusions were presented as follow:â‘ .Bacterial community composition from North water area of Lake Poyang in Oct.2006 belongs to the following eight groups of the domain bacteria: Alpha-proteobacteria,Beta-proteobacteria,Gamma-proteobacteria,Epsilon-proteobacteria,Actinobacteria,Bacteroidetes,Acidobacteria,Planctomycates and unclassified proteobacteria.â‘¡.Bacterial community composition from North water area of Lake Poyang in May.2007 belongs to the following seven groups of the domain Bacteria: Alpha-proteobacteria,Beta-proteobacteria,Gamma-proteobacteria,Actinobacteria,Bacteroidetes,OP10,Planctomycetes and the unclassified bacteria.â‘¢.Bacterial community composition from South Lake Poyang in Oct.2006 was affiliated with nine bacterial divisions,e.g.,Alpha-proteobacteria, Beta-proteobacteria,Gamma-proteobacteria,Actinobacteria,Bacteroidetes,OP10, Cyanobacteria,Verrucomicrobia,Nitrospira,unclassified bacterium.â‘£.Bacterial community composition from South Lake Poyang in May.2007 was affiliated with eight bacterial divisions,e.g.,Alpha-proteobacteria, Beta-proteobacteria,Gamma-proteobacteria,Actinobacteria,Bacteroidetes, Cyanobacteria,Verrucomicrobia,Planctomycetes,unclassified bacterium.Results indicated that bacteria had rich diversity and apparently temporal and spatial heterogeneity from water of Lake Poyang.Bacterial compositions were affected by season,and the bacterial diversity and richeness from southern water was greater than from northem water.Beta-proteobacteria was the most significant lineages in the northern(2006) and southern(2007) Lake Poyang.However, Gamma-proteobacteria and Bacteroidetes were the most significant lineages in the northern(2007) Lake Poyang,while Beta-proteobacteria and Actinobacteria were the significant lineages in the southern(2006) Poyang.