Microbial communities involved in anaerobic degradation of alkanes

TY - JOUR

T1 - Microbial communities involved in anaerobic degradation of alkanes

AU - Mbadinga, Serge Maurice

AU - Wang, Li Ying

AU - Zhou, Lei

AU - Liu, Jin Feng

AU - Gu, Ji Dong

AU - Mu, Bo Zhong

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 41073055 ) and the 863 Program (Grant No. 2009AA063503 ).

PY - 2011/1

Y1 - 2011/1

N2 - Saturated hydrocarbons are quantitatively the most abundant fraction among all petroleum hydrocarbons. Significant advances have been made in the understanding of the anaerobic biodegradability of alkanes in terms of the microorganisms involved and the biochemical pathways over the past two decades. They can be used as carbon and energy sources by diverse physiological groups of microorganisms (isolates or consortia) grown under chlorate-reducing, nitrate-reducing, sufidogenic or methanogenic conditions. Two general biochemical mechanisms have been proposed for the initial activation of alkanes including addition of fumarate and carboxylation. However, glycyl radical enzymes dependent fumarate addition which yields alkyl-substituted succinate appear to be the most commonly shared mechanism for the anaerobic attack of alkanes under various redox conditions by phylogenetically diverse microorganisms. The genes encoding the candidate alkylsuccinate synthase have been recently described in alkane-degrading sulfate- and nitrate-reducers as well as in hydrocarbon-rich environments. Alternative mechanisms may also be available depending on the alkane-degrading microbial community and electron acceptors utilized.

AB - Saturated hydrocarbons are quantitatively the most abundant fraction among all petroleum hydrocarbons. Significant advances have been made in the understanding of the anaerobic biodegradability of alkanes in terms of the microorganisms involved and the biochemical pathways over the past two decades. They can be used as carbon and energy sources by diverse physiological groups of microorganisms (isolates or consortia) grown under chlorate-reducing, nitrate-reducing, sufidogenic or methanogenic conditions. Two general biochemical mechanisms have been proposed for the initial activation of alkanes including addition of fumarate and carboxylation. However, glycyl radical enzymes dependent fumarate addition which yields alkyl-substituted succinate appear to be the most commonly shared mechanism for the anaerobic attack of alkanes under various redox conditions by phylogenetically diverse microorganisms. The genes encoding the candidate alkylsuccinate synthase have been recently described in alkane-degrading sulfate- and nitrate-reducers as well as in hydrocarbon-rich environments. Alternative mechanisms may also be available depending on the alkane-degrading microbial community and electron acceptors utilized.

KW - Alkanes

KW - Alkylsuccinate synthase

KW - Alkylsuccinates

KW - Anaerobic degradation

KW - Methanogenic degradation of alkanes

KW - Microbial communities

UR - http://www.scopus.com/inward/record.url?scp=78650677445&partnerID=8YFLogxK

U2 - 10.1016/j.ibiod.2010.11.009

DO - 10.1016/j.ibiod.2010.11.009

M3 - 文献综述

AN - SCOPUS:78650677445

SN - 0964-8305

VL - 65

SP - 1

EP - 13

JO - International Biodeterioration and Biodegradation

JF - International Biodeterioration and Biodegradation

IS - 1

ER -