Draft genome of an Aerophobetes bacterium reveals a facultative lifestyle in deep-sea anaerobic sediments
Wang, Yong1,2; Gao, Zhao-Ming1; Li, Jiang-Tao3; Bougouffa, Salim4; Tian, Ren Mao2; Bajic, Vladimir B.4; Qian, Pei-Yuan2
2016-08-01
Source PublicationSCIENCE BULLETIN
Volume61Issue:15Pages:1176-1186
AbstractAerophobetes (or CD12) is a recently defined bacterial phylum, of which the metabolic processes and ecological importance remain unclear. In the present study, we obtained the draft genome of an Aerophobetes bacterium TCS1 from saline sediment near the Thuwal cold seep in the Red Sea using a genome binning method. Analysis of 16S rRNA genes of TCS1 and close relatives revealed wide distribution of Aerophobetes in deep-sea sediments. Phylogenetic relationships showed affinity between Aerophobetes TCS1 and some thermophilic bacterial phyla. The genome of TCS1 (at least 1.27 Mbp) contains a full set of genes encoding core metabolic pathways, including glycolysis and pyruvate fermentation to produce acetyl-CoA and acetate. The identification of cross-membrane sugar transporter genes further indicates its potential ability to consume carbohydrates preserved in the sediment under the microbial mat. Aerophobetes bacterium TCS1 therefore probably carried out saccharolytic and fermentative metabolism. The genes responsible for autotrophic synthesis of acetyl-CoA via the Wood-Ljungdahl pathway were also found in the genome. Phylogenetic study of the essential genes for the Wood-Ljungdahl pathway implied relative independence of Aerophobetes bacterium from the known acetogens and methanogens. Compared with genomes of acetogenic bacteria, Aerophobetes bacterium TCS1 genome lacks the genes involved in nitrogen metabolism, sulfur metabolism, signal transduction and cell motility. The metabolic activities of TCS1 might depend on geochemical conditions such as supplies of CO2, hydrogen and sugars, and therefore the TCS1 might be a facultative bacterium in anaerobic saline sediments near cold seeps.
SubtypeArticle
KeywordDeep-sea Sediment Aerophobetes Metagenome Sugar Fermentation Cold Seep
WOS HeadingsScience & Technology
DOI10.1007/s11434-016-1135-6
Indexed BySCI
Language英语
WOS KeywordCOLD SEEP SEDIMENTS ; CLOSTRIDIUM-THERMOACETICUM ; MOORELLA-THERMOACETICA ; MICROBIAL DIVERSITY ; BACILLUS-SUBTILIS ; MARINE-SEDIMENTS ; TRANSPORT-SYSTEM ; NITRATE REMOVAL ; SULFUR PROTEIN ; COA SYNTHASE
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000381095100007
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/1603
Collection深海科学研究部_深海生物学研究室_海洋微生物宏基因组与分子进化研究组
Affiliation1.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
2.Hong Kong Univ Sci & Technol, Div Life Sci, Clear Water Bay, Hong Kong, Peoples R China
3.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
4.King Abdullah Univ Sci & Technol, Computat Biosci Res Ctr, Jeddah 239556900, Saudi Arabia
First Author AffilicationInstitute of Deep-sea Science and Engineering,CAS
Recommended Citation
GB/T 7714
Wang, Yong,Gao, Zhao-Ming,Li, Jiang-Tao,et al. Draft genome of an Aerophobetes bacterium reveals a facultative lifestyle in deep-sea anaerobic sediments[J]. SCIENCE BULLETIN,2016,61(15):1176-1186.
APA Wang, Yong.,Gao, Zhao-Ming.,Li, Jiang-Tao.,Bougouffa, Salim.,Tian, Ren Mao.,...&Qian, Pei-Yuan.(2016).Draft genome of an Aerophobetes bacterium reveals a facultative lifestyle in deep-sea anaerobic sediments.SCIENCE BULLETIN,61(15),1176-1186.
MLA Wang, Yong,et al."Draft genome of an Aerophobetes bacterium reveals a facultative lifestyle in deep-sea anaerobic sediments".SCIENCE BULLETIN 61.15(2016):1176-1186.
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