Characterizing lipid biomarkers in methanotrophic communities of gas hydrate-bearing sediments in the Sea of Okhotsk

Yang, Jin-Yong; Chung, Kyung Ho; Jin, Yulong; Shin, Kyung‐Hoon

doi:10.1016/j.marpetgeo.2011.03.010

Cited by 10 publications

(9 citation statements)

References 113 publications

(163 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Such microbial compounds that are methane-derived show even more 13 C-depleted (Pancost et al 2000). Thus, the linear 13 C decrease of C 20:1 and C 24:1 with depth may be connected with methanogenic activity (Yang et al 2011) as this trend is parallel to the evolution of the methane 13 C composition (Figs. 1C and 2C).…”

Section: Fatty Acid Sourcesmentioning

confidence: 89%

“…SRB growing heterotrophically produce certain compounds that are sometimes depleted in 13 C by 12‰ compared to their substrates (Londry et al 2004). Moreover, methane can presently act as an additional source of carbon, leading to highly 13 C-depleted FAs when oxidized (Yang et al 2011). Thus, 13 C values of the C 17:0 anteiso (-37.5‰) and methane (-24.0‰) at 1.9 m depth may indicate the production of this compound by SRB along with some microaerobic oxidation of methane (Deutmann and Schink 2011).…”

Section: Fatty Acid Sourcesmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Methanogenic Populations in Holocene Lacustrine Sediments Revealed by Clone Libraries and Fatty Acid Biogeochemistry

Vuillemin

Ariztegui

Nobbe

et al. 2014

Geomicrobiology Journal

View full text Add to dashboard Cite

Influence of methanogenic populations in Holocene lacustrine sediments revealed by clone libraries and fatty acid biogeochemistry Abstract Methanogenic populations were investigated in subsaline Laguna Potrok Aike sediments, southern Argentina. Microbial density and activity were assessed via cell count and in situ ATP detection for the last ~11K years. Methanogen phylogenetics highlighted species stratification throughout depth, whereas CO 2 reduction was the major pathway leading to methane production. Organic substrates, characterized using pore water analysis, bulk organic fractions and saturated fatty acids, showed a clear link between sediment colonization and initial organic sources. Concentrations and 13 C compositions of methane and fatty acids provided final evidence of a microbial imprint on Holocene organic proxies in the most colonized intervals.

show abstract

Section: Fatty Acid Sourcesmentioning

confidence: 89%

Section: Fatty Acid Sourcesmentioning

confidence: 99%

Influence of Methanogenic Populations in Holocene Lacustrine Sediments Revealed by Clone Libraries and Fatty Acid Biogeochemistry

Vuillemin

Ariztegui

Nobbe

et al. 2014

Geomicrobiology Journal

View full text Add to dashboard Cite

show abstract

“…Of particular interests are microbial communities and their activities that contribute to the vast formation of hydrated methane in deep-sea sediments [6]; and thus, are potentially critical for the stability, composition, and crystal structures of methane hydrates [7]. Biogeographical distribution and microbial diversity in methane hydrate-bearing sediments have been intensively conducted [6,8,9,10]; and diverse methanogens and methanotrophs were identified in hydrate-related environments [7,11].…”

Section: Introductionmentioning

confidence: 99%

Geochemical Significance of Biomarkers in the Methane Hydrate-Bearing Sediments from the Shenhu Area, the South China Sea

Zhou

Fang

et al. 2019

Molecules

View full text Add to dashboard Cite

Biomarkers from methane hydrate-bearing sediments can provide vital evidence for microbial activities associated with methanogenesis and their relation to the formation of methane hydrates. However, the former mainly focus on intact polar lipids from these microorganisms, and rarely investigate molecular hydrocarbons such as acyclic isoprenoids and hopanes so far. In this work, the composition of biomarkers in the methane hydrate-bearing sediments in cores SH2B and SH7B from the Shenhu area, the South China Sea (SCS) were identified by gas chromatography-mass spectrometry (GC-MS) and comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC×GC-TOFMS). The occurrence of unresolved complex mixtures (UCMs) and 25-norhopane indicate that the organic matters in methane hydrate-bearing sediments underwent a high degree of biodegradation. Although specific biomarkers for methanogens were not identified, the UCMs, 25-norhopane, pristane, phytane, and hopanes can still indicate the microbial activities associated with methanogenesis. These molecular signals suggest that diverse microorganisms, particularly methanogens, were quite vigorous in the methane hydrate-bearing sediments. Further, the biomarkers identified in this study can also be steadily detected from deep oil/gas reservoirs. Considering numerous adjacent oil/gas reservoir systems, fault systems, and mud diapers occurred in the SCS, it can be inferred that microbial activities and deep oil/gas reservoirs may have jointly contributed to the formation of methane hydrate deposits in the SCS.

show abstract

“…예를 들면, 해저 내 메탄의 혐기성 산화와 동 시에 황산염 환원이 활발하게 나타나는 퇴적층에서 메탄 을 탄소원으로서 사용하는 미생물의 지질생체지표로는 2,6,11,15-tetramethylhexadecane(crocetane), 2,6,10,15,19-pentamethylicosane(PMI) 등이 있으며, 이들의 화합물들은 메탄의 거동을 파악하는데 유용하게 사용될 뿐 만 아니라 메탄의 방출이 활발한 퇴적층에서 주로 검출된바 있다 (Thiel et al 1999;Maslen et al 2009). 황산염 환원과 관 계있는 황산염 환원 박테리아는 분석된 각 지방산 중 a-C15:0 + i-C15:0 + C16:1w5의 합을 통해 표현될 수 있으 며, 이들의 농도는 미생물의 상대적인 생체량을 나타낼 뿐 만 아니라 서로 다른 퇴적환경에 따라 차이가 나타날 수 있다 (Feio et al 1988;Dzierzewicz et al 1996;KIGAM 2011;Yang et al 2011).…”

Section: 서 론unclassified

“…또한 국내에서 지질생체지표를 이용하여 메탄 하이드레이 트를 포함하는 퇴적물 내에서 미생물에 의한 유기물의 순 환 및 메탄의 거동에 관한 연구가 보고된 바 있으나 (Yang et al 2011;Lee et al 2013) (Fig. 5A).…”

Section: 서 론unclassified

Organic Matter Cycle by Biogeochemical Indicator in Tidal Mud Flat, West Coast of Korea

Lee¹,

Lee

Jeong³

et al. 2014

Ocean and Polar Research

Self Cite

View full text Add to dashboard Cite

: To understand the degradation processes of organic matter related to sulfate reduction by Sulfate Reduction Bacteria (SRB) in the tidal flat sediments of Hwang-do and Sogeun-ri, Tae-an Peninsula in Chungnam-do, biogeochemical characteristics were analyzed and highlighted using specific microbial biomarkers. The organic geochemical parameters (TOC, δ 13C org , C/N ratio, long-chain-n-alkane) indicate that most of the organic matter has been derived from marine phytoplankton and bacteria in the fine-grained sediment of Sogeun-ri, although terrestrial plant components have occasionally been incorporated to a significant degree in the coarse-grained sediment of Hwang-do. The concentration of sulfate in pore water is a constant tendency with regard to depth profile, while methane concentration appears to be slightly different with regard to depth profile at the two sites. Especially, the sum of bacteria fatty acid (a-C15:0 + i-C15:0 + C16:1w5) confirms that the these concentrations in Sogeun-ri are related to the degradation of Benzene, Toluene, Ethylbenzene and Xylene (BTEX) compounds from the crude oil retained in the sediments as a result of the Hebei Spirit oil-spill accident in 2007. The methane-related microbial communities as shown by lipid biomarkers (crocetane, PMI) are larger in some sedimentary sections of Hwang-do than in the Sogeunri tidal flat. These findings suggest that methane production by microbiological processes is clearly governed by SRB activity along the vertical succession in organic-enriched tidal flats.

show abstract

Characterizing lipid biomarkers in methanotrophic communities of gas hydrate-bearing sediments in the Sea of Okhotsk

Cited by 10 publications

References 113 publications

Influence of Methanogenic Populations in Holocene Lacustrine Sediments Revealed by Clone Libraries and Fatty Acid Biogeochemistry

Influence of Methanogenic Populations in Holocene Lacustrine Sediments Revealed by Clone Libraries and Fatty Acid Biogeochemistry

Geochemical Significance of Biomarkers in the Methane Hydrate-Bearing Sediments from the Shenhu Area, the South China Sea

Organic Matter Cycle by Biogeochemical Indicator in Tidal Mud Flat, West Coast of Korea

Contact Info

Product

Resources

About