Abundance and Distribution of Fatty Acids in Sediments of the South Mid-Atlantic Ridge
文献类型：CNKI期刊论文
| 作者 | HUANG Xin; ZENG Zhigang; CHEN Shuai; YIN Xuebo; WANG Xiaoyuan; MA Yao ; YANG Baoju; RONG Kunbo; SHU Yunchao; JIANG Tao
|
| 发表日期 | 2015-04-06 |
| 出处 | Journal of Ocean University of China
 |
| 关键词 | South Mid-Atlantic Ridge sediment fatty acids hydrothermal activity microorganism |
| 英文摘要 | 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 C12 to C30. The total concentrations of TFAs(∑TFA) ranged from 7.15 to 30.09 μg g-1 dry sediment, and ∑TFA was weakly correlated with bitumen content(R2 = 0.69). The ∑TFA 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 ∑TFA 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 ΣTFAs 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/i C15:0 and C16:1ω7), which are signature biomarkers for sulfur-metabolizing bacteria, show the same distribution trend as ∑TFA 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Key Basic Research Program of China (Grant No. 2013CB429700) ; National Special Fund for the 12th Five Year Plan of COMRA (Grant Nos. DY125-12-R-02, DY125-12-R-05, DY125- 11-R-05) ; National Natural Science Foundation of China (Grant Nos. 41325021, 40830849, 40976027) ; Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA11030302) ; the Shandong Province Natural Science Foundation of China for Distinguished Young Scholars (Grant No. JQ200913) |
| 卷 | v.14期:02页:91-97 |
| 语种 | 英文; |
| 分类号 | P736.41 |
| ISSN号 | 1672-5182 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190076]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 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. 2015. |
入库方式： OAI收割
来源：海洋研究所
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