Succession of bacterial community structure along the Changjiang River determined by denaturing gradient gel electrophoresis and clone library analysis.

ABSTRACT: Bacterial community structure along the Changjiang River (which is more than 2,500 km long) was studied by using denaturing gradient gel electrophoresis (DGGE) and clone library analysis of PCR-amplified 16S ribosomal DNA (rDNA) with universal bacterial primer sets. DGGE profiles and principal-component analysis (PCA) demonstrated that the bacterial community gradually changed from upstream to downstream in both 1998 and 1999. Bacterial diversity, as determined by the Shannon index (H'), gradually decreased from upstream to downstream. The PCA plots revealed that the differences in the bacterial communities among riverine stations were not appreciable compared with the differences in two adjacent lakes, Lake Dongting and Lake Poyang. The relative stability of the bacterial communities at t

SUBMITTER: Sekiguchi H 

PROVIDER: S-EPMC126381 | biostudies-literature | 2002 Oct

REPOSITORIES: biostudies-literature