title: Atmospheric Deposition-Carried Zn and Cd from a Zinc Smelter and Their Effects on Soil Microflora as Revealed by 16S rDNA.
abstract: In this study, we investigated the influence of heavy metals (HM) on total soil bacterial population and its diversity pattern from 10 km distance of a Zinc smelter in Feng County, Qinling Mountain, China. We characterized and identified the bacterial community in a HM polluted soil using 16S rDNA technology. Out results indicated that the maximum soil HM concentration and the minimum bacterial population were observed in S2 soil, whereas bacterial diversity raised with the sampling distance increased. The bacterial communities were dominated by the phyla Proteobacteria, Acidobacteria and Actinobacteria in cornfield soils, except Fimicutes phylum which dominated in hilly area soil. The soil CEC, humic acid (HA)/fulvic acid (FA) and microbial OTUs increased with the sampling distance increased. Shewanella, Halomonas and Escherichia genera were highly tolerant to HM stress in both cultivated and non-cultivated soil. Finally, we found a consistent correlation of bacterial diversity with total HM and SOM along the sampling distance surrounding the zinc smelter, which could provide a new insight into the bacterial community-assisted and phytoremediation of HM contaminated soils.
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Shen
authors.affiliation: School of Environment, Beijing Normal University, Beijing, China.
authors.forename: Yanxia
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Mukesh Kumar
authors.initials: MK
authors.lastname: Awasthi
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Amjad
authors.initials: A
authors.lastname: Ali
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Ronghua
authors.initials: R
authors.lastname: Li
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Wang
authors.affiliation: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Zengqiang
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D001419:Bacteria / Q000187:drug effects* / Q000235:genetics / Q000254:growth & development; D001578:Benzopyrans / Q000633:toxicity; D044822:Biodiversity; D002104:Cadmium / Q000633:toxicity*; D016000:Cluster Analysis; D004269:DNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism; D006812:Humic Substances / Q000633:toxicity; D012336:RNA, Ribosomal, 16S / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000737:chemistry* / Q000633:toxicity; D015032:Zinc / Q000633:toxicity*
chemical_list: D001578:Benzopyrans; D004269:DNA, Bacterial; D006812:Humic Substances; D012336:RNA, Ribosomal, 16S; D012989:Soil Pollutants; D002104:Cadmium; D015032:Zinc; C005023:fulvic acid