Open AccessCO metabolism of Desulfovibrio vulgaris strain Madison: physiological function in the absence or presence of exogeneous substrates
Author(s) -
Lupton F.S.,
Conrad R.,
Zeikus J.G.
Publication year - 1984
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1984.tb01075.x
Subject(s) - desulfovibrio vulgaris , carbon monoxide , metabolism , chemistry , electron donor , biochemistry , hydrogen , strain (injury) , bacterial growth , sulfate , bacteria , nuclear chemistry , food science , biology , catalysis , organic chemistry , genetics , anatomy
Trace amounts of carbon monoxide were produced and subsequently consumed during the growth of Desulfovibrio vulgaris on organic electron donors. D. vulgaris also utilized carbon monoxide as the sole electron donor for growth and sulfate reduction. Growth of D. vulgaris on CO, H 2 or organic electron donors was inhibited at ≥4.5% CO in the culture headspace. At lower CO concentrations, hydrogen was produced as a consequence of CO consumption and consumed when the CO partial pressure was decreased. The rate of CO consumption was ten‐fold higher in D. vulgaris grown on either CO, lactate or pyruvate than when cells were grown on H 2 as electron donor. The physiological function of CO metabolism and a CO‐dependent hydrogen cycle in D. vulgaris is discussed.