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 language | English |
|---|---|
| Pages (from-to) | 1933-1935 |
| Number of pages | 3 |
| Journal | Science |
| Volume | 314 |
| Issue number | 5807 |
| DOIs | |
| Publication status | Published - Dec 2006 |
| Externally published | Yes |