Lineages of acidophilic archaea revealed by community genomic analysis

Brett J. Baker, Gene W. Tyson, Richard I. Webb, Judith Flanagan, Philip Hugenholtz, Eric E. Allen, Jillian F. Banfield

Research output: Contribution to journalArticleResearchpeer-review

186 Citations (Scopus)

Abstract

Novel, low-abundance microbial species can be easily overlooked in standard polymerase chain reaction (PCR)-based surveys. We used community genomic data obtained without PCR or cultivation to reconstruct DNA fragments bearing unusual 165 ribosomal RNA (rRNA) and protein-coding genes from organisms belonging to novel archaeal lineages. The organisms are minor components of all biofilms growing in pH 0.5 to 1.5 solutions within the Richmond Mine, California. Probes specific for 165 rRNA showed that the fraction less than 0.45 micrometers in diameter is dominated by these organisms. Transmission electron microscope images revealed that the cells are pleomorphic with unusual folded membrane protrusions and have apparent volumes of <0.006 cubic micrometer.

Original languageEnglish
Pages (from-to)1933-1935
Number of pages3
JournalScience
Volume314
Issue number5807
DOIs
Publication statusPublished - Dec 2006
Externally publishedYes

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