鉄酸化細菌の生育, 鉄酸化能などに及ぼす有機源の影響

概要

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Glucose was assimilated effectivity by iron oxidizing bacteria, WU-66 B, up to about 0.2 % (w/v). Both of the growth and iron oxidizing activity were inhibited almost completely in the presence of glucose more than 0.3 %. When glucose was added to 9 K medium, the medium for autotrophic growth, both of the growth and iron oxidation were delayed in the early stage of cultuer, but the delays were restored at least within 48 hr of cultivation.Malt extract was assimilated effectively up to about 0.15 % (w/v) and the delay of the growth and iron oxidation in the ealy stage of culture was also found in this case.Organic nitrogen sources, peptone and urea were assimilated by WU-66 B. When peptone was added to the 9 K medium instead of ammonium sulfate, the growth was increased but iron oxidizing activity was decreased. It was presumed that peptone was assimilated as a carbon source too, and could not be utilized as an energy source. When urea was added to the 9 K medium instead of ammonium sulfate, the growth was decreased slightly and less iron oxidation activity was found.
社団法人日本生物工学会の論文
1971-07-25