Deep-sea methane seep sediments in the Okhotsk Sea sustain diverse and abundant anammox bacteria

CORC > 厦门大学 > 海洋环境－已发表论文

	Deep-sea methane seep sediments in the Okhotsk Sea sustain diverse and abundant anammox bacteria
	Shao, Sudong ; Luan, Xiwu ; Dang, Hongyue ; Zhou, Haixia ; Zhao, Yakun ; Liu, Haitao ; Zhang, Yunbo ; Dai, Lingqing ; Ye, Ying ; Klotz, Martin G. ; Dang HY(党宏月)
刊名	http://dx.doi.org/10.1111/1574-6941.12241
	2014
关键词	AMMONIUM-OXIDIZING BACTERIA POLYMERASE CHAIN-REACTION RIBOSOMAL-RNA GENES MOLECULAR EVIDENCE OXIDATION ANAMMOX CONTINENTAL-SHELF MARINE-SEDIMENTS DNA-POLYMERASE CHINA SEA NITROGEN
英文摘要	China 973 [2013CB955700, 2007CB411702, 2009CB219506]; NSFC [91328209, 91028011, 41076091]; China SOA [GASI-03-01-02-05]; US NSF [0541797, 0948202]; Marginal sea methane seep sediments sustain highly productive chemosynthetic ecosystems and are hotspots of intense biogeochemical cycling. Rich methane supply stimulates rapid microbial consumption of oxygen; these systems are thus usually hypoxic to anoxic. This and reported evidence for resident nitrogen fixation suggest the presence of an anaerobic ammonium-oxidizing (anammox) bacterial community in methane seep sediments. To test this hypothesis, we employed detection of genes encoding 16S rRNA gene and hydrazine dehydrogenase (hzo) to investigate the structure, abundance and distribution of the anammox bacterial community in the methane seep sediments of the Okhotsk Sea. Diverse complements of Candidatus Scalindua-related 16S rRNA and hzo gene sequences were obtained. Most of the deep-sea sites harbored abundant hzo genes with copy numbers as high as 10(7)g(-1) sediment. In general, anammox bacterial signatures were significantly more abundant in the deep-water sediments. Sediment porewater NO3-, NOx- (i.e. NO3+ + NO2-), NOx-/NH4+ and sediment silt content correlated with in situ distribution patterns of anammox bacterial marker genes, likely because they determine anammox substrate availability and sediment geochemistry, respectively. The abundance and distribution of anammox bacterial gene markers indicate a potentially significant contribution of anammox bacteria to the marine N cycle in the deep-sea methane seep sediments.
语种	英语
出版者	WILEY-BLACKWELL
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88171]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Shao, Sudong,Luan, Xiwu,Dang, Hongyue,et al. Deep-sea methane seep sediments in the Okhotsk Sea sustain diverse and abundant anammox bacteria[J]. http://dx.doi.org/10.1111/1574-6941.12241,2014.
APA	Shao, Sudong.,Luan, Xiwu.,Dang, Hongyue.,Zhou, Haixia.,Zhao, Yakun.,...&党宏月.(2014).Deep-sea methane seep sediments in the Okhotsk Sea sustain diverse and abundant anammox bacteria.http://dx.doi.org/10.1111/1574-6941.12241.
MLA	Shao, Sudong,et al."Deep-sea methane seep sediments in the Okhotsk Sea sustain diverse and abundant anammox bacteria".http://dx.doi.org/10.1111/1574-6941.12241 (2014).