title: Abundant presence of the gamma-like Proteobacterial pufM gene in oxic seawater.
abstract: Known anoxygenic photosynthetic bacteria (APB) affiliated to Gammaproteobacteria usually use anaerobic metabolism and are restricted to oxygen-free habitats. Here, we report abundant (average of 34.5%) presence of diverse APB related to gamma-like Proteobacteria in oxic oceanic surface water as indicated by the pufM gene, that encodes the M subunit of the light reaction centre complex. Thus, our sequences were most likely derived from aerobic anoxygenic phototrophs (AAnP). Two genetically distinct genotypes were revealed: one was from the oligotrophic North Pacific Ocean Gyre and the other, was from the trophic East China Sea and Bering Sea. The discovery of abundant presence of novel gamma-like Proteobacterial pufM gene in the oxic seawater extends the functional ecotypes of AAnP.
authors.affiliation: State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China.
authors.forename: Yaohua
authors.initials: Y
authors.lastname: Hu
authors.forename: Hailian
authors.initials: H
authors.lastname: Du
authors.forename: Nianzhi
authors.initials: N
authors.lastname: Jiao
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Zeng
mesh_terms: D000332:Aerobiosis; D001426:Bacterial Proteins / Q000235:genetics*; D020563:Gammaproteobacteria / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D005798:Genes, Bacterial; D008386:Marine Biology; D010788:Photosynthesis; D045322:Photosynthetic Reaction Center Complex Proteins / Q000235:genetics*; D020081:Phyllachorales; D012623:Seawater / Q000382:microbiology*
chemical_list: D001426:Bacterial Proteins; D045322:Photosynthetic Reaction Center Complex Proteins; C098543:PufM protein, Bacteria