Abundance and distribution of fatty acids in sediments of the South Mid-Atlantic Ridge

doi:10.1007/s11802-015-2613-1

IOCAS-IR > 海洋地质与环境重点实验室

	Abundance and distribution of fatty acids in sediments of the South Mid-Atlantic Ridge
	Huang Xin 1,2; Zeng Zhigang 1; Chen Shuai 1; Yin Xuebo 1; Wang Xiaoyuan 1; Ma Yao1,2 ; Yang Baoju1,2 ; Rong Kunbo 1,2; Shu Yunchao 1,2; Jiang Tao1,2
	2015-04-01
发表期刊	JOURNAL OF OCEAN UNIVERSITY OF CHINA
卷号	14 期号:2 页码:277-283
文章类型	Article
摘要	Sediment samples obtained from the South Mid-Atlantic Ridge were studies by gas chromatography-mass spectrometer (GC-MS) for the abundance and distributions of total fatty acids (TFAs). Approximately 34 fatty acids were identified, with the chain-lengths ranging from C-12 to C-30. The total concentrations of TFAs (I TFA) pound ranged from 7.15 to 30.09 mu g g(-1) dry sediment, and I TFA pound was weakly correlated with bitumen content (R (2) = 0.69). The I TFA pound of samples around hydrothermal areas were significantly higher than that of samples away from hydrothermal areas, indicating intense primary production and large biomass in the hydrothermal areas, and suggesting a close relationship between hydrothermal activity and I TFA pound of samples. The characteristics of the TFA composition in the present study are rich in monounsaturated fatty acids and lacking in polyunsaturated fatty acids, and the ratios between the concentrations of monounsaturated fatty acids and I TFAs pound in samples close to the hydrothermal areas, are about 0.8, but for samples far from the hydrothermal areas, they are only about 0.5. Several fatty acids (e.g., a/iC15:0 and C16:1 omega 7), which are signature biomarkers for sulfur-metabolizing bacteria, show the same distribution trend as I TFA pound of samples, further highlighting the close relationship between fatty acid content and hydrothermal activity and/or hydrothermal communities. The metabolic activities of hydrothermal communities, especially those of microorganisms, are likely the main source of fatty acids in samples.
关键词	South Mid-atlantic Ridge Sediment Fatty Acids Hydrothermal Activity Microorganism
DOI	10.1007/s11802-015-2613-1
收录类别	SCI
语种	英语
WOS记录号	WOS:000350058900011
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/25393
专题	海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Huang Xin,Zeng Zhigang,Chen Shuai,et al. Abundance and distribution of fatty acids in sediments of the South Mid-Atlantic Ridge[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2015,14(2):277-283.
APA	Huang Xin.,Zeng Zhigang.,Chen Shuai.,Yin Xuebo.,Wang Xiaoyuan.,...&Jiang Tao.(2015).Abundance and distribution of fatty acids in sediments of the South Mid-Atlantic Ridge.JOURNAL OF OCEAN UNIVERSITY OF CHINA,14(2),277-283.
MLA	Huang Xin,et al."Abundance and distribution of fatty acids in sediments of the South Mid-Atlantic Ridge".JOURNAL OF OCEAN UNIVERSITY OF CHINA 14.2(2015):277-283.

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