Sterane and hopane biomarkers capture microbial transformations of complex hydrocarbons in young hydrothermal Guaymas Basin sediments
Sterane and hopane biomarkers capture microbial transformations of complex hydrocarbons in young hydrothermal Guaymas Basin sediments
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甾烷和藿烷生物标记物捕获瓜伊马斯盆地年轻热液沉积物中复杂碳氢化合物的微生物转化
DOI:
10.1038/s43247-022-00582-8
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发表时间:
2022
影响因子:
7.9
通讯作者:
Edgcomb, Virginia P.
中科院分区:
文献类型:
--
作者:
Mara, Paraskevi;Nelson, Robert K.;Reddy, Christopher M.;Teske, Andreas;Edgcomb, Virginia P.
In Guaymas Basin, organic-rich hydrothermal sediments produce complex hydrocarbon mixtures including saturated, aromatic and alkylated aromatic compounds. We examined sediments from push cores from Guyamas sites with distinct temperature and geochemistry profiles to gain a better understanding on abiotic and biological hydrocarbon alteration. Here we provide evidence for biodegradation of hopanoids, producing saturated hydrocarbons like drimane and homodrimane as intermediate products. These sesquiterpene by-products are present throughout cooler sediments, but their relative abundance is drastically reduced within hotter hydrothermal sediments, likely due to hydrothermal mobilization. Within the sterane pool we detect a trend toward aromatization of steroidal compounds within hotter sediments. The changes in hopane and sterane biomarker composition at different sites reflect temperature-related differences in geochemical and microbial hydrocarbon alterations. In contrast to traditionally observed microbial biodegradation patterns that may extend over hundreds of meters in subsurface oil reservoirs, Guaymas Basin shows highly compressed changes in surficial sediments.
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影响因子:
5.9
作者:
Lagostina L;Frandsen S;MacGregor BJ;Glombitza C;Deng L;Fiskal A;Li J;Doll M;Geilert S;Schmidt M;Scholz F;Bernasconi SM;Jørgensen BB;Hensen C;Teske A;Lever MA
通讯作者:
Lever MA
影响因子:
5.2
作者:
Edgcomb VP;Teske AP;Mara P
通讯作者:
Mara P
影响因子:
5.2
作者:
Engelen B;Nguyen T;Heyerhoff B;Kalenborn S;Sydow K;Tabai H;Peterson RN;Wegener G;Teske A
通讯作者:
Teske A
影响因子:
4.6
作者:
Lin YS;Koch BP;Feseker T;Ziervogel K;Goldhammer T;Schmidt F;Witt M;Kellermann MY;Zabel M;Teske A;Hinrichs KU
通讯作者:
Hinrichs KU
影响因子:
1.8
作者:
S. Stout
通讯作者:
S. Stout