Marine Biology Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093.
Appl Environ Microbiol. 1985 Aug;50(2):491-7. doi: 10.1128/aem.50.2.491-497.1985.
Manganese reduction was catalyzed by enrichment cultures of anaerobic bacteria obtained from coastal marine sediments. In the absence of oxygen, these enrichment cultures reduced manganates when grown on either lactate, succinate, or acetate in both sulfate-free and sulfate-containing artificial seawaters. Sodium azide as well as oxygen completely inhibited microbial manganese reduction by these enrichment cultures, whereas molybdate had no effect on them. The addition of nitrate to the medium slightly decreased the rate of Mn production by these enrichment cultures. These findings are consistent with the hypothesis that the manganese-reducing organisms in these enrichment cultures use manganates as terminal electron acceptors and couple manganese reduction in some way to the oxidation of organic matter.
锰的还原是由从沿海海洋沉积物中获得的厌氧细菌的富集培养物催化的。在没有氧气的情况下，这些富集培养物在硫酸盐-自由和硫酸盐-含有的人工海水中生长时，可将锰酸盐还原为乳酸盐、琥珀酸盐或乙酸盐。叠氮化钠以及氧气完全抑制了这些富集培养物对微生物锰的还原，而钼酸盐对它们没有影响。向培养基中添加硝酸盐会略微降低这些富集培养物产生 Mn 的速度。这些发现与以下假设一致，即这些富集培养物中的锰还原生物将锰酸盐用作末端电子受体，并以某种方式将锰还原与有机物的氧化偶联。
