Atmospheric nitrogen fixation by purple-sulfur bacteria cultured in organic and inorganic media
Hui Fang, Yang
Mikrobiologiya Transl 31(5): 628-631
1963
Accession: 024205818
Of the 4 strains of purple-sulfur bacteria, considerable growth on N-free media was produced by Rhodopseudomo-nas strains-II and-IV from Odessa estuaries and Chromatium strain-VI from a pond in the Peking Botanical Garden. Rhodopseudomonas and Chromatium fixed atmospheric N when cultured in an inorganic medium containing NaHCO3 and Na2S and various organic-acids. Rhodopseudomonas yielded the largest cell harvest with N fixation in media containing acetic-, succinic-, malic-, or butyric-acid, and Chromatin-in media containing acetic-, succinic-, or malic-acid. The purple-sulfur bacteria fixed N most efficiently when utilizing fumaric-acid.