Candidatus Chloracidobacterium thermophilum: An Aerobic Phototrophic Acidobacterium

Author:

Bryant Donald A.1234,Costas Amaya M. Garcia1234,Maresca Julia A.1234,Chew Aline Gomez Maqueo1234,Klatt Christian G.1234,Bateson Mary M.1234,Tallon Luke J.1234,Hostetler Jessica1234,Nelson William C.1234,Heidelberg John F.1234,Ward David M.1234

Affiliation:

1. Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA.

2. Department of Land Resources and Environmental Sciences, Montana State University, Post Office Box 173120, Bozeman, MT 59717–3120, USA.

3. The Institute for Genomic Research, 9712 Medical Center Drive, Rockville, MD 20850, USA.

4. Department of Biology, University of Southern California, Wrigley Marine Science Center, Post Office Box 5069, Avalon, CA 90704, USA.

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 .

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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