Candidatus Chloracidobacterium thermophilum: an aerobic phototrophic Acidobacterium.
Bryant DA,
Costas AM,
Maresca JA,
Chew AG,
Klatt CG,
Bateson MM,
Tallon LJ,
Hostetler J,
Nelson WC,
Heidelberg JF,
Ward DM.
Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA. dab14@psu.edu
Only five bacterial phyla with members capable of chlorophyll (Chl)-based phototrophy are presently known. Metagenomic data from the phototrophic microbial mats of alkaline siliceous hot springs in Yellowstone National Park revealed the existence of a distinctive bacteriochlorophyll (BChl)-synthesizing, phototrophic bacterium. A highly enriched culture of this bacterium grew photoheterotrophically, synthesized BChls a and c under oxic conditions, and had chlorosomes and type 1 reaction centers. "Candidatus Chloracidobacterium thermophilum" is a BChl-producing member of the poorly characterized phylum Acidobacteria.
PMID: 17656724 [PubMed - indexed for MEDLINE]