Anthropogenic impact on diazotrophic diversity in the mangrove rhizosphere revealed by nifH pyrosequencing
Jing, Hongmei1; Xia, Xiaomin2; Liu, Hongbin2; Zhou, Zhi3; Wu, Chen3; Nagarajan, Sanjay3
2015-10-21
Source PublicationFRONTIERS IN MICROBIOLOGY
Volume6
AbstractDiazotrophs in the mangrove rhizosphere play a major role in providing new nitrogen to the mangrove ecosystem and their composition and activity are strongly influenced by anthropogenic activity and ecological conditions. In this study, the diversity of the diazotroph communities in the rhizosphere sediment of five tropical mangrove sites with different levels of pollution along the north and south coastline of Singapore were studied by pyrosequencing of the nifH gene. Bioinformatics analysis revealed that in all the studied locations, the diazotroph communities comprised mainly of members of the diazotrophic cluster I and cluster III. The detected cluster III diazotrophs, which were composed entirely of sulfate reducing bacteria, were more abundant in the less polluted locations. The metabolic capacities of these diazotrophs indicate the potential for bioremediation and resiliency of the ecosystem to anthropogenic impact. In heavily polluted locations, the diazotrophic community structures were markedly different and the diversity of species was significantly reduced when compared with those in a pristine location. This, together with the increased abundance of Marinobacterium, which is a bioindicator of pollution, suggests that anthropogenic activity has a negative impact on the genetic diversity of diazotrophs in the mangrove rhizosphere.
SubtypeArticle
KeywordDiazotrophs Nifh Pyrosequencing Mangrove
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.3389/fmicb.2015.01172
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSULFATE-REDUCING BACTERIA ; NITROGEN-FIXING BACTERIA ; METHANOSARCINA-BARKERI 227 ; MOLECULAR CHARACTERIZATION ; PHYLOGENETIC DIVERSITY ; DINITROGEN FIXATION ; GENE DIVERSITY ; RIVER ESTUARY ; HEAVY-METALS ; SEDIMENTS
WOS SubjectMicrobiology
WOS IDWOS:000363980100001
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/889
Collection深海科学研究部_深海生物学研究室_海洋微生物分子生态学研究组
Affiliation1.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya, Peoples R China
2.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China
3.Natl Univ Singapore, Fac Engn, Dept Civil & Environm Engn, Singapore 117548, Singapore
First Author AffilicationInstitute of Deep-sea Science and Engineering,CAS
Recommended Citation
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Jing, Hongmei,Xia, Xiaomin,Liu, Hongbin,et al. Anthropogenic impact on diazotrophic diversity in the mangrove rhizosphere revealed by nifH pyrosequencing[J]. FRONTIERS IN MICROBIOLOGY,2015,6.
APA Jing, Hongmei,Xia, Xiaomin,Liu, Hongbin,Zhou, Zhi,Wu, Chen,&Nagarajan, Sanjay.(2015).Anthropogenic impact on diazotrophic diversity in the mangrove rhizosphere revealed by nifH pyrosequencing.FRONTIERS IN MICROBIOLOGY,6.
MLA Jing, Hongmei,et al."Anthropogenic impact on diazotrophic diversity in the mangrove rhizosphere revealed by nifH pyrosequencing".FRONTIERS IN MICROBIOLOGY 6(2015).
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