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
发表期刊FRONTIERS IN MICROBIOLOGY
卷号6
摘要Diazotrophs 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.
文章类型Article
关键词Diazotrophs Nifh Pyrosequencing Mangrove
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.3389/fmicb.2015.01172
URL查看原文
收录类别SCI
语种英语
关键词[WOS]SULFATE-REDUCING BACTERIA ; NITROGEN-FIXING BACTERIA ; METHANOSARCINA-BARKERI 227 ; MOLECULAR CHARACTERIZATION ; PHYLOGENETIC DIVERSITY ; DINITROGEN FIXATION ; GENE DIVERSITY ; RIVER ESTUARY ; HEAVY-METALS ; SEDIMENTS
WOS类目Microbiology
WOS记录号WOS:000363980100001
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.idsse.ac.cn/handle/183446/889
专题深海科学研究部_深海生物学研究室_海洋微生物分子生态学研究组
作者单位1.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
第一作者单位中国科学院深海科学与工程研究所
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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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