title: Determinative factors of competitive advantage between aerobic bacteria for niches at the air-liquid interface.
abstract: We focused on bacterial interspecies relationships at the air-liquid interface where the formation of pellicles by aerobes was observed. Although an obligate aerobe (Brevibacillus sp. M1-5) was initially dominant in the pellicle population, a facultative aerobe (Pseudoxanthomonas sp. M1-3) emerged and the viability of M1-5 rapidly decreased due to severe competition for oxygen. Supplementation of the medium with carbohydrates allowed the two species to coexist at the air-liquid interface. These results indicate that the population dynamics within pellicles are primarily governed by oxygen utilization which was affected by a combination of carbon sources.
authors.affiliation: Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi1–1–1, Bunkyo-ku, Tokyo 113–8657, Japan.
authors.forename: Kyosuke
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Shin
authors.initials: S
authors.lastname: Haruta
authors.forename: Souichiro
authors.initials: S
authors.lastname: Kato
authors.forename: Masaharu
authors.initials: M
authors.lastname: Ishii
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Igarashi
mesh_terms: D000391:Air Microbiology; D001420:Bacteria, Aerobic / Q000254:growth & development* / Q000378:metabolism; D058675:Brevibacillus / Q000254:growth & development* / Q000378:metabolism; D003470:Culture Media / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D014871:Water Microbiology; D044166:Xanthomonadaceae / Q000254:growth & development* / Q000378:metabolism
chemical_list: D003470:Culture Media; D010100:Oxygen