Marine Biology

, Volume 150, Issue 5, pp 739–747 | Cite as

Recovery of novel bacterial diversity from mangrove sediment

  • Jun-Bin Liang
  • Yue-Qin Chen
  • Chong-Yu Lan
  • Nora F. Y. Tam
  • Qi-Jie Zan
  • Li-Nan Huang
Research Article

Abstract

Bacteria in the surface sediments of a subtropical mangrove habitat were investigated using a cultivation-independent molecular approach. Phylogenetic analysis of nearly full-length 16S rRNA genes revealed a diversity of sequences that were mostly novel. Members from the five subdivisions of the Proteobacteria were detected, and they collectively represented the majority (67%) of the clone library. Sequence types affiliated with the Gammaproteobacteria constituted the largest portion (29%) of the library, and many of them were related to free-living and symbiotic sulfur-oxidizing bacteria. The Epsilonproteobacteria were the second most abundant group (16%), including only one sequence type clustering with PCR-generated bacterial clones previously recovered from deep-sea sediments. A substantial portion (8%) of the clones grouped within the Deltaproteobacteria, a subdivision with anaerobic sulfate or metal reduction as the predominant metabolic trait of its members. In addition, minor portions were affiliated with the CytophagaFlexibacterBacteroides group (9%), Actinobacteria (6%), Chloroflexi (5%), Firmicutes (4%), Fusobacteria (1%), and the Chlamydiae/Verrucomicrobia group, Fibrobacteres/Acidobacteria group and Planctomycetes (each < 1%). These results significantly expand our knowledge of the bacterial diversity of the unique mangrove environment.

Notes

Acknowledgments

We would like to thank the Futian-City University Mangrove Research & Development Center for their support in conducting field sampling. The work described in this paper was supported by a grant from the City University of Hong Kong (Project No. 7001690).

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Jun-Bin Liang
    • 1
  • Yue-Qin Chen
    • 1
  • Chong-Yu Lan
    • 1
  • Nora F. Y. Tam
    • 2
  • Qi-Jie Zan
    • 3
  • Li-Nan Huang
    • 1
  1. 1.Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of BiocontrolZhongshan UniversityGuangzhouPeople’s Republic of China
  2. 2.Department of Biology and ChemistryCity University of Hong KongHong KongPeople’s Republic of China
  3. 3.Neilingding-Futian National Nature Reserve Bureau of GuangdongShenzhenPeople’s Republic of China

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