Hyphomicrobia and the oxidation of manganesse in aquatic ecosystems

Research paper by P. A. Tyler

Indexed on: 01 Dec '70Published on: 01 Dec '70Published in: Antonie van Leeuwenhoek


Biogenic manganese deposits from freshwater pipelines in many parts of the world have been examined chemically and microbiologically. For chemical analysis to indicate the nature of the deposit the sampling procedure must ensure that the biogenic deposit is not contaminated by abiogenic material.Hyphomicrobium is abundant in manganese deposits from world-wide location but it is not the only manganese-oxidizing bacterium. The difficulties of assessing the relative importance of hyphomicrobia and other manganese bacteria, and of formulating satisfactory culture media, are discussed.Examination of accredited deposits and laboratory cultures suggests that some hyphomicrobia preferentially oxidize manganese rather than iron.