A novel lineage of proteobacteria involved in formation of marine Fe-oxidizing microbial mat communities.

ABSTRACT:

Background

For decades it has been recognized that neutrophilic Fe-oxidizing bacteria (FeOB) are associated with hydrothermal venting of Fe(II)-rich fluids associated with seamounts in the world's oceans. The evidence was based almost entirely on the mineralogical remains of the microbes, which themselves had neither been brought into culture or been assigned to a specific phylogenetic clade. We have used both cultivation and cultivation-independent techniques to study Fe-rich microbial mats associated with hydrothermal venting at Loihi Seamount, a submarine volcano.

Methodology/principle findings

Using gradient enrichment techniques, two iron-oxidizing bacteria, strains PV-1 and JV-1, were isolated. Chemolithotrophic growth was observed under microaerobic conditions; Fe(II)

SUBMITTER: Emerson D 

PROVIDER: S-EPMC1930151 | biostudies-literature | 2007 Aug

REPOSITORIES: biostudies-literature