BMC Microbiol 2001,1(1):5.PubMedCrossRef 30. Wright ADG, Ma X, Obispo NE: Methanobrevibacter phylotypes are the

dominant methanogens in sheep from Venezuela. Microbial Ecol 2008,56(2):390–394.CrossRef 31. Samuel BS, Gordon JI: A humanized gnotobiotic mouse model of host-archaeal-bacterial mutualism. Proc Natl Acad Sci USA 2006,103(26):10011–10016.PubMedCrossRef 32. Zhao Y, Boone DR, Mah RA, Boone JE, Xun L: Isolation and characterization of Methanocorpusculum labreanum sp. nov. from the LaBrea Tar Pits. Int J Syst Bacteriol 1989,39(1):10–13.CrossRef 33. Garcia JL, DNA Damage inhibitor Ollivier B, Whitman WB: The order Methanomicrobiales. Prokaryotes 2006, 3:208–230.CrossRef 34. Ohkuma M, Noda S, EPZ015938 datasheet Horikoshi K, Kudo T: Phylogeny of symbiotic methanogens in the gut of the termite Reticulitermes speratus. FEMS microbiol lett 2006,134(1):45–50.CrossRef 35. Purdy KJ: The distribution and diversity of Euryarchaeota in termite guts. Adv Appl Microbiol 2007, 62:63–80.PubMedCrossRef 36. Barber RD: Methanogenesis: ecology. New York: John Wiley & Sons; 2007. doi:10.1002/9780470015902.a0000475.pub2 37. Clauss M, Frey R, Kiefer B, Lechner-Doll M, Loehlein W, Polster C, Rössner G, Streich WJ: The maximum attainable body size of herbivorous mammals: morphophysiological constraints on foregut, and adaptations of hindgut fermenters.

Oecologia 2003,136(1):14–27.PubMedCrossRef 38. Facey HV, Northwood KS, Wright ADG: Molecular Diversity of methanogens in fecal samples from captive Sumatran orangutans ( pongo abelii) . Amer J selleck products Primatol 2012,74(5):460–468.CrossRef 39. Hofmann R: Evolutionary steps of ecophysiological adaptation and diversification of ruminants: a comparative view of their digestive system. Oecologia 1989,78(4):443–457.CrossRef 40.

Oftedal OT, Baer DJ, Allen ME: The feeding and nutrition of herbivores. Chicago (USA): University of Chicago Press; 1996. 41. Dridi B, Fardeau ML, Ollivier B, Raoult D, Drancourt M: Methanomassiliicoccus luminyensis gen. nov., sp. nov., a methanogenic archaeon isolated from human faeces. Int J Syst Evol Microbiol 2012,62(Pt 8):1902–1907.PubMedCrossRef Benzatropine Competing interests The authors declare that they have no competing interests. Authors’ contributions YL designed the study, carried out the sequence alignment and drafted the manuscript. ADGW participated in the sequence alignment and performed the statistical analysis. YL participated in the design of the study. HL participated in the sequence alignment. QY participated in the design of the study. LL and MY helped to draft the manuscript. All authors read and approved the final manuscript.”
“Background Salmonella is the most common cause of bacterial food-borne illness in the U.S. and is estimated to annually cause over 1 million cases, 19,000 hospitalizations, 350 deaths, and $2.6 billion in social costs [1, 2].