Symbiont–host relationships in chemosynthetic mussels: A comprehensive lipid biomarker study

► We provide a lipid-based view of chemosynthetic symbiosis in three mussel species from hot and cold seeps. ► We successfully identified IPLs as suitable marker for estimating the abundance of symbionts within a host organism. ► δ 13C analysis of host and symbiont-specific lipids highlight the chem...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Organic geochemistry 2012-02, Vol.43, p.112-124
Hauptverfasser: Kellermann, Matthias Y., Schubotz, Florence, Elvert, Marcus, Lipp, Julius S., Birgel, Daniel, Prieto-Mollar, Xavier, Dubilier, Nicole, Hinrichs, Kai-Uwe
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 124
container_issue
container_start_page 112
container_title Organic geochemistry
container_volume 43
creator Kellermann, Matthias Y.
Schubotz, Florence
Elvert, Marcus
Lipp, Julius S.
Birgel, Daniel
Prieto-Mollar, Xavier
Dubilier, Nicole
Hinrichs, Kai-Uwe
description ► We provide a lipid-based view of chemosynthetic symbiosis in three mussel species from hot and cold seeps. ► We successfully identified IPLs as suitable marker for estimating the abundance of symbionts within a host organism. ► δ 13C analysis of host and symbiont-specific lipids highlight the chemosynthetic carbon supply for the mussels. ► Compositional and δ 13C variation point to distinct nutritional preferences/carbon metabolism for the respective symbiont. Symbiosis with chemosynthetic microorganisms allows invertebrates from hydrothermal vents and cold seeps, such as mussels, snails and tubeworms, to gain nutrition independently of organic input from photosynthetic communities. Lipid biomarkers and their compound specific stable carbon isotopes ( δ 13C) have greatly aided the elucidation of chemosynthetic symbiosis. Due to recent methodological advances in liquid chromatography it is now possible to obtain a more holistic view of lipid biomarkers, including the analysis of intact polar membrane lipids (IPLs) and bacteriohopanepolyols (BHPs). This study provides an extensive examination of polar and apolar lipids in combination with stable carbon isotope analysis of three Bathymodiolus mussels ( Bathymodiolus childressi, Bathymodiolus cf. thermophilus, Bathymodiolus brooksi) hosting different types of bacterial symbiont (methane-oxidizing, sulfur-oxidizing and a dual symbiosis with methane- and sulfur-oxidizing symbionts, respectively). We propose that IPLs with C 16:1 acyl side chains, and phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE) head groups, which were only detected in the gill tissue, can be used as symbiont-characteristic biomarkers. These putative symbiont-specific IPLs provide the opportunity to detect and quantify the methanotrophic and thiotrophic symbionts within the gill tissue. Additional characteristic markers for methanotrophic symbionts were found in B. childressi and B. brooksi, including the BHP derivatives aminotriol and aminotetrol, 4-methyl sterols and diagnostic fatty acids (FAs), such as C 16:1ω9, C 16:1ω8, and C 18:1ω8. In general, the δ 13C values of FAs, alcohols and BHP-derived hopanols were in accordance with carbon assimilation pathways of the respective methanotrophic or thiotrophic symbionts in all three Bathymodiolus mussels. Differences in BHP distribution as well as δ 13C values in the two mussels hosting a methanotrophic symbiont may indicate the presence of different m
doi_str_mv 10.1016/j.orggeochem.2011.10.005
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1020839818</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0146638011002750</els_id><sourcerecordid>1020839818</sourcerecordid><originalsourceid>FETCH-LOGICAL-a494t-22d0745c8af99a71f4990de938024b6c9eedccfb92eeadcbc0f5d36cb9c383be3</originalsourceid><addsrcrecordid>eNqFkM9u1DAQhy0EEkvhGfAFiUsWO3H-mFupgCJV4lB6xXLGk42XJA4eb6W98Q68IU9Sr7aCIydL429-89PHGJdiK4Vs3u23Ie52GGDEeVsKKfN4K0T9hG1k11ZFXWrxlG2EVE3RVJ14zl4Q7YWQrVRiw77fHufehyX9-fV7DJR4xMmmPKDRr8T9wk_BgY5LGjF54POBCCd6zy85hHmNOOJC_h755FfveM6abfyBkVM6uONL9mywE-Grx_eC3X36-O3qurj5-vnL1eVNYZVWqShLJ1pVQ2cHrW0rB6W1cKhz31L1DWhEBzD0ukS0DnoQQ-2qBnoNVVf1WF2wt-fcNYafB6RkZk-A02QXDAcyUpSiq3Qnu4x2ZxRiIIo4mDX63PmYIXNSavbmn1JzUnr6yUrz6pvHK5bATkO0C3j6u1_WSqh8JnOvz9xgg7G7mJm72xxUZ-26lY3KxIczkVXivcdoCDwugM5HhGRc8P-v8wANnZ8Z</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1020839818</pqid></control><display><type>article</type><title>Symbiont–host relationships in chemosynthetic mussels: A comprehensive lipid biomarker study</title><source>Elsevier ScienceDirect Journals</source><creator>Kellermann, Matthias Y. ; Schubotz, Florence ; Elvert, Marcus ; Lipp, Julius S. ; Birgel, Daniel ; Prieto-Mollar, Xavier ; Dubilier, Nicole ; Hinrichs, Kai-Uwe</creator><creatorcontrib>Kellermann, Matthias Y. ; Schubotz, Florence ; Elvert, Marcus ; Lipp, Julius S. ; Birgel, Daniel ; Prieto-Mollar, Xavier ; Dubilier, Nicole ; Hinrichs, Kai-Uwe</creatorcontrib><description>► We provide a lipid-based view of chemosynthetic symbiosis in three mussel species from hot and cold seeps. ► We successfully identified IPLs as suitable marker for estimating the abundance of symbionts within a host organism. ► δ 13C analysis of host and symbiont-specific lipids highlight the chemosynthetic carbon supply for the mussels. ► Compositional and δ 13C variation point to distinct nutritional preferences/carbon metabolism for the respective symbiont. Symbiosis with chemosynthetic microorganisms allows invertebrates from hydrothermal vents and cold seeps, such as mussels, snails and tubeworms, to gain nutrition independently of organic input from photosynthetic communities. Lipid biomarkers and their compound specific stable carbon isotopes ( δ 13C) have greatly aided the elucidation of chemosynthetic symbiosis. Due to recent methodological advances in liquid chromatography it is now possible to obtain a more holistic view of lipid biomarkers, including the analysis of intact polar membrane lipids (IPLs) and bacteriohopanepolyols (BHPs). This study provides an extensive examination of polar and apolar lipids in combination with stable carbon isotope analysis of three Bathymodiolus mussels ( Bathymodiolus childressi, Bathymodiolus cf. thermophilus, Bathymodiolus brooksi) hosting different types of bacterial symbiont (methane-oxidizing, sulfur-oxidizing and a dual symbiosis with methane- and sulfur-oxidizing symbionts, respectively). We propose that IPLs with C 16:1 acyl side chains, and phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE) head groups, which were only detected in the gill tissue, can be used as symbiont-characteristic biomarkers. These putative symbiont-specific IPLs provide the opportunity to detect and quantify the methanotrophic and thiotrophic symbionts within the gill tissue. Additional characteristic markers for methanotrophic symbionts were found in B. childressi and B. brooksi, including the BHP derivatives aminotriol and aminotetrol, 4-methyl sterols and diagnostic fatty acids (FAs), such as C 16:1ω9, C 16:1ω8, and C 18:1ω8. In general, the δ 13C values of FAs, alcohols and BHP-derived hopanols were in accordance with carbon assimilation pathways of the respective methanotrophic or thiotrophic symbionts in all three Bathymodiolus mussels. Differences in BHP distribution as well as δ 13C values in the two mussels hosting a methanotrophic symbiont may indicate the presence of different methanotrophic symbionts and/or changes in the nutritional status. In all three mussel species the δ 13C values of lipid biomarkers assigned to the symbionts were similar to those of the hosts, indicating the importance of the bacterial symbionts as the main carbon source for the mussel tissue.</description><identifier>ISSN: 0146-6380</identifier><identifier>EISSN: 1873-5290</identifier><identifier>DOI: 10.1016/j.orggeochem.2011.10.005</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Bathymodiolus ; Bathymodiolus brooksi ; Bathymodiolus childressi ; biomarkers ; carbon ; cold ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; fatty acids ; hosts ; Isotope geochemistry ; Isotope geochemistry. Geochronology ; liquid chromatography ; Marine ; Marine and continental quaternary ; microorganisms ; mussels ; nutritional status ; phosphatidylethanolamines ; snails ; stable isotopes ; sterols ; Surficial geology ; symbionts ; symbiosis</subject><ispartof>Organic geochemistry, 2012-02, Vol.43, p.112-124</ispartof><rights>2011 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a494t-22d0745c8af99a71f4990de938024b6c9eedccfb92eeadcbc0f5d36cb9c383be3</citedby><cites>FETCH-LOGICAL-a494t-22d0745c8af99a71f4990de938024b6c9eedccfb92eeadcbc0f5d36cb9c383be3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0146638011002750$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=25404083$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kellermann, Matthias Y.</creatorcontrib><creatorcontrib>Schubotz, Florence</creatorcontrib><creatorcontrib>Elvert, Marcus</creatorcontrib><creatorcontrib>Lipp, Julius S.</creatorcontrib><creatorcontrib>Birgel, Daniel</creatorcontrib><creatorcontrib>Prieto-Mollar, Xavier</creatorcontrib><creatorcontrib>Dubilier, Nicole</creatorcontrib><creatorcontrib>Hinrichs, Kai-Uwe</creatorcontrib><title>Symbiont–host relationships in chemosynthetic mussels: A comprehensive lipid biomarker study</title><title>Organic geochemistry</title><description>► We provide a lipid-based view of chemosynthetic symbiosis in three mussel species from hot and cold seeps. ► We successfully identified IPLs as suitable marker for estimating the abundance of symbionts within a host organism. ► δ 13C analysis of host and symbiont-specific lipids highlight the chemosynthetic carbon supply for the mussels. ► Compositional and δ 13C variation point to distinct nutritional preferences/carbon metabolism for the respective symbiont. Symbiosis with chemosynthetic microorganisms allows invertebrates from hydrothermal vents and cold seeps, such as mussels, snails and tubeworms, to gain nutrition independently of organic input from photosynthetic communities. Lipid biomarkers and their compound specific stable carbon isotopes ( δ 13C) have greatly aided the elucidation of chemosynthetic symbiosis. Due to recent methodological advances in liquid chromatography it is now possible to obtain a more holistic view of lipid biomarkers, including the analysis of intact polar membrane lipids (IPLs) and bacteriohopanepolyols (BHPs). This study provides an extensive examination of polar and apolar lipids in combination with stable carbon isotope analysis of three Bathymodiolus mussels ( Bathymodiolus childressi, Bathymodiolus cf. thermophilus, Bathymodiolus brooksi) hosting different types of bacterial symbiont (methane-oxidizing, sulfur-oxidizing and a dual symbiosis with methane- and sulfur-oxidizing symbionts, respectively). We propose that IPLs with C 16:1 acyl side chains, and phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE) head groups, which were only detected in the gill tissue, can be used as symbiont-characteristic biomarkers. These putative symbiont-specific IPLs provide the opportunity to detect and quantify the methanotrophic and thiotrophic symbionts within the gill tissue. Additional characteristic markers for methanotrophic symbionts were found in B. childressi and B. brooksi, including the BHP derivatives aminotriol and aminotetrol, 4-methyl sterols and diagnostic fatty acids (FAs), such as C 16:1ω9, C 16:1ω8, and C 18:1ω8. In general, the δ 13C values of FAs, alcohols and BHP-derived hopanols were in accordance with carbon assimilation pathways of the respective methanotrophic or thiotrophic symbionts in all three Bathymodiolus mussels. Differences in BHP distribution as well as δ 13C values in the two mussels hosting a methanotrophic symbiont may indicate the presence of different methanotrophic symbionts and/or changes in the nutritional status. In all three mussel species the δ 13C values of lipid biomarkers assigned to the symbionts were similar to those of the hosts, indicating the importance of the bacterial symbionts as the main carbon source for the mussel tissue.</description><subject>Bathymodiolus</subject><subject>Bathymodiolus brooksi</subject><subject>Bathymodiolus childressi</subject><subject>biomarkers</subject><subject>carbon</subject><subject>cold</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>fatty acids</subject><subject>hosts</subject><subject>Isotope geochemistry</subject><subject>Isotope geochemistry. Geochronology</subject><subject>liquid chromatography</subject><subject>Marine</subject><subject>Marine and continental quaternary</subject><subject>microorganisms</subject><subject>mussels</subject><subject>nutritional status</subject><subject>phosphatidylethanolamines</subject><subject>snails</subject><subject>stable isotopes</subject><subject>sterols</subject><subject>Surficial geology</subject><subject>symbionts</subject><subject>symbiosis</subject><issn>0146-6380</issn><issn>1873-5290</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkM9u1DAQhy0EEkvhGfAFiUsWO3H-mFupgCJV4lB6xXLGk42XJA4eb6W98Q68IU9Sr7aCIydL429-89PHGJdiK4Vs3u23Ie52GGDEeVsKKfN4K0T9hG1k11ZFXWrxlG2EVE3RVJ14zl4Q7YWQrVRiw77fHufehyX9-fV7DJR4xMmmPKDRr8T9wk_BgY5LGjF54POBCCd6zy85hHmNOOJC_h755FfveM6abfyBkVM6uONL9mywE-Grx_eC3X36-O3qurj5-vnL1eVNYZVWqShLJ1pVQ2cHrW0rB6W1cKhz31L1DWhEBzD0ukS0DnoQQ-2qBnoNVVf1WF2wt-fcNYafB6RkZk-A02QXDAcyUpSiq3Qnu4x2ZxRiIIo4mDX63PmYIXNSavbmn1JzUnr6yUrz6pvHK5bATkO0C3j6u1_WSqh8JnOvz9xgg7G7mJm72xxUZ-26lY3KxIczkVXivcdoCDwugM5HhGRc8P-v8wANnZ8Z</recordid><startdate>20120201</startdate><enddate>20120201</enddate><creator>Kellermann, Matthias Y.</creator><creator>Schubotz, Florence</creator><creator>Elvert, Marcus</creator><creator>Lipp, Julius S.</creator><creator>Birgel, Daniel</creator><creator>Prieto-Mollar, Xavier</creator><creator>Dubilier, Nicole</creator><creator>Hinrichs, Kai-Uwe</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7TN</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>20120201</creationdate><title>Symbiont–host relationships in chemosynthetic mussels: A comprehensive lipid biomarker study</title><author>Kellermann, Matthias Y. ; Schubotz, Florence ; Elvert, Marcus ; Lipp, Julius S. ; Birgel, Daniel ; Prieto-Mollar, Xavier ; Dubilier, Nicole ; Hinrichs, Kai-Uwe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a494t-22d0745c8af99a71f4990de938024b6c9eedccfb92eeadcbc0f5d36cb9c383be3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Bathymodiolus</topic><topic>Bathymodiolus brooksi</topic><topic>Bathymodiolus childressi</topic><topic>biomarkers</topic><topic>carbon</topic><topic>cold</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>fatty acids</topic><topic>hosts</topic><topic>Isotope geochemistry</topic><topic>Isotope geochemistry. Geochronology</topic><topic>liquid chromatography</topic><topic>Marine</topic><topic>Marine and continental quaternary</topic><topic>microorganisms</topic><topic>mussels</topic><topic>nutritional status</topic><topic>phosphatidylethanolamines</topic><topic>snails</topic><topic>stable isotopes</topic><topic>sterols</topic><topic>Surficial geology</topic><topic>symbionts</topic><topic>symbiosis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kellermann, Matthias Y.</creatorcontrib><creatorcontrib>Schubotz, Florence</creatorcontrib><creatorcontrib>Elvert, Marcus</creatorcontrib><creatorcontrib>Lipp, Julius S.</creatorcontrib><creatorcontrib>Birgel, Daniel</creatorcontrib><creatorcontrib>Prieto-Mollar, Xavier</creatorcontrib><creatorcontrib>Dubilier, Nicole</creatorcontrib><creatorcontrib>Hinrichs, Kai-Uwe</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Oceanic Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) 1: Biological Sciences &amp; Living Resources</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) Professional</collection><jtitle>Organic geochemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kellermann, Matthias Y.</au><au>Schubotz, Florence</au><au>Elvert, Marcus</au><au>Lipp, Julius S.</au><au>Birgel, Daniel</au><au>Prieto-Mollar, Xavier</au><au>Dubilier, Nicole</au><au>Hinrichs, Kai-Uwe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Symbiont–host relationships in chemosynthetic mussels: A comprehensive lipid biomarker study</atitle><jtitle>Organic geochemistry</jtitle><date>2012-02-01</date><risdate>2012</risdate><volume>43</volume><spage>112</spage><epage>124</epage><pages>112-124</pages><issn>0146-6380</issn><eissn>1873-5290</eissn><abstract>► We provide a lipid-based view of chemosynthetic symbiosis in three mussel species from hot and cold seeps. ► We successfully identified IPLs as suitable marker for estimating the abundance of symbionts within a host organism. ► δ 13C analysis of host and symbiont-specific lipids highlight the chemosynthetic carbon supply for the mussels. ► Compositional and δ 13C variation point to distinct nutritional preferences/carbon metabolism for the respective symbiont. Symbiosis with chemosynthetic microorganisms allows invertebrates from hydrothermal vents and cold seeps, such as mussels, snails and tubeworms, to gain nutrition independently of organic input from photosynthetic communities. Lipid biomarkers and their compound specific stable carbon isotopes ( δ 13C) have greatly aided the elucidation of chemosynthetic symbiosis. Due to recent methodological advances in liquid chromatography it is now possible to obtain a more holistic view of lipid biomarkers, including the analysis of intact polar membrane lipids (IPLs) and bacteriohopanepolyols (BHPs). This study provides an extensive examination of polar and apolar lipids in combination with stable carbon isotope analysis of three Bathymodiolus mussels ( Bathymodiolus childressi, Bathymodiolus cf. thermophilus, Bathymodiolus brooksi) hosting different types of bacterial symbiont (methane-oxidizing, sulfur-oxidizing and a dual symbiosis with methane- and sulfur-oxidizing symbionts, respectively). We propose that IPLs with C 16:1 acyl side chains, and phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE) head groups, which were only detected in the gill tissue, can be used as symbiont-characteristic biomarkers. These putative symbiont-specific IPLs provide the opportunity to detect and quantify the methanotrophic and thiotrophic symbionts within the gill tissue. Additional characteristic markers for methanotrophic symbionts were found in B. childressi and B. brooksi, including the BHP derivatives aminotriol and aminotetrol, 4-methyl sterols and diagnostic fatty acids (FAs), such as C 16:1ω9, C 16:1ω8, and C 18:1ω8. In general, the δ 13C values of FAs, alcohols and BHP-derived hopanols were in accordance with carbon assimilation pathways of the respective methanotrophic or thiotrophic symbionts in all three Bathymodiolus mussels. Differences in BHP distribution as well as δ 13C values in the two mussels hosting a methanotrophic symbiont may indicate the presence of different methanotrophic symbionts and/or changes in the nutritional status. In all three mussel species the δ 13C values of lipid biomarkers assigned to the symbionts were similar to those of the hosts, indicating the importance of the bacterial symbionts as the main carbon source for the mussel tissue.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.orggeochem.2011.10.005</doi><tpages>13</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0146-6380
ispartof Organic geochemistry, 2012-02, Vol.43, p.112-124
issn 0146-6380
1873-5290
language eng
recordid cdi_proquest_miscellaneous_1020839818
source Elsevier ScienceDirect Journals
subjects Bathymodiolus
Bathymodiolus brooksi
Bathymodiolus childressi
biomarkers
carbon
cold
Earth sciences
Earth, ocean, space
Exact sciences and technology
fatty acids
hosts
Isotope geochemistry
Isotope geochemistry. Geochronology
liquid chromatography
Marine
Marine and continental quaternary
microorganisms
mussels
nutritional status
phosphatidylethanolamines
snails
stable isotopes
sterols
Surficial geology
symbionts
symbiosis
title Symbiont–host relationships in chemosynthetic mussels: A comprehensive lipid biomarker study
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-23T22%3A00%3A45IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Symbiont%E2%80%93host%20relationships%20in%20chemosynthetic%20mussels:%20A%20comprehensive%20lipid%20biomarker%20study&rft.jtitle=Organic%20geochemistry&rft.au=Kellermann,%20Matthias%20Y.&rft.date=2012-02-01&rft.volume=43&rft.spage=112&rft.epage=124&rft.pages=112-124&rft.issn=0146-6380&rft.eissn=1873-5290&rft_id=info:doi/10.1016/j.orggeochem.2011.10.005&rft_dat=%3Cproquest_cross%3E1020839818%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1020839818&rft_id=info:pmid/&rft_els_id=S0146638011002750&rfr_iscdi=true