Propionate formation by Opitutus terrae in pure culture and in mixed culture with a hydrogenotrophic methanogen and implications for carbon fluxes in anoxic rice paddy soil.
Propionate-forming bacteria seem to be abundant in anoxic rice paddy soil, but biogeochemical investigations show that propionate is not a correspondingly important intermediate in carbon flux in this system. Mixed cultures of Opitutus terrae strain PB90-1, a representative propionate-producing bacterium from rice paddy soil, and the hydrogenotrophic Methanospirillum hungatei strain SK maintained hydrogen partial pressures similar to those in the soil. The associated shift away from propionate formation observed in these cultures helps to reconcile the disparity between microbiological and biogeochemical studies.
Chin
Kuk-Jeong
KJ
Max-Planck-Institut für Terrestrische Mikrobiologie, D-35043 Marburg, Germany.
Janssen
Peter H
PH
D000693:Anaerobiosis; D001419:Bacteria / Q000254:growth & development* / Q000378:metabolism; D003470:Culture Media; D005947:Glucose / Q000378:metabolism; D006859:Hydrogen / Q000378:metabolism; D019639:Methanospirillum / Q000254:growth & development* / Q000378:metabolism; D012275:Oryza; D010368:Pectins / Q000378:metabolism; D011422:Propionates / Q000378:metabolism*; D012988:Soil Microbiology
D003470:Culture Media; D011422:Propionates; D006859:Hydrogen; D010368:Pectins; D005947:Glucose