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Published on: September 14, 2013
Candidatus Chloracidobacterium thermophilum: an aerobic phototrophic Acidobacterium
Donald A Bryant1, Amaya M Garcia Costas, Julia A Maresca
1Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA. dab14@psu.edu
Abstract:
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.
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