title: Phylogenetic analysis of bacterial community composition in sediment contaminated with multiple heavy metals from the Xiangjiang River in China.
abstract: Understanding the ecology of sediments that are contaminated with heavy metals is critical for bioremediating these sediments, which has become a public concern over the course of the development of modern industry. To investigate the bacterial community composition of sediments that are contaminated with heavy metals in the Xiangjiang River, a total of four sediment samples contaminated with multiple heavy metals were obtained, and a culture-independent molecular analysis, polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), was performed. The results revealed that heavy metal pollution affected the sediment microbial community diversity, and the greatest species diversity appeared in the moderately polluted sediment X sample. The dominant family in these sediments includes α-Proteobacteria, β-Proteobacteria and Firmicutes. Moreover, α-Proteobacteria was significantly increased with increases in heavy metal. A redundancy analysis (RDA) also confirmed this phenomenon.
authors.affiliation: School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
authors.forename: Jianyu
authors.initials: J
authors.lastname: Zhu
authors.forename: Jingxia
authors.initials: J
authors.lastname: Zhang
authors.forename: Qian
authors.initials: Q
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Han
authors.forename: Jianping
authors.initials: J
authors.lastname: Xie
authors.forename: Yuehua
authors.initials: Y
authors.lastname: Hu
authors.forename: Liyuan
authors.initials: L
authors.lastname: Chai
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000235:genetics; D001483:Base Sequence; D002681:China; D019015:Geologic Sediments / Q000382:microbiology*; D019216:Metals, Heavy / Q000032:analysis*; D008969:Molecular Sequence Data; D010802:Phylogeny; D045483:Rivers / Q000737:chemistry / Q000382:microbiology*
chemical_list: D019216:Metals, Heavy