2007
DOI: 10.1126/science.1143236
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Candidatus Chloracidobacterium thermophilum: An Aerobic Phototrophic Acidobacterium

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 Chl… Show more

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Cited by 357 publications
(344 citation statements)
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“…The main absorption maxima detected in the methanol extracts of pink-pigmented isolates were at 445 and 509 nm, suggesting the presence of a-and bcarotene. Thus, despite the fact that chlorophyllbased phototrophy has recently been demonstrated for some thermophilic representatives of the Acidobacteria (Bryant et al, 2007), our strains did not possess this capability.…”
Section: Colony and Cell Morphologies Of Acidobacterial Isolatescontrasting
confidence: 54%
See 1 more Smart Citation
“…The main absorption maxima detected in the methanol extracts of pink-pigmented isolates were at 445 and 509 nm, suggesting the presence of a-and bcarotene. Thus, despite the fact that chlorophyllbased phototrophy has recently been demonstrated for some thermophilic representatives of the Acidobacteria (Bryant et al, 2007), our strains did not possess this capability.…”
Section: Colony and Cell Morphologies Of Acidobacterial Isolatescontrasting
confidence: 54%
“…Members of this phylum have been detected by 16S rRNA gene-based molecular surveys in a wide variety of environments, including soils and sediments (Barns et al, 1999;Janssen, 2006), hot springs (Hugenholtz et al, 1998b;Barns et al, 1999;Bryant et al, 2007), peat bogs (Rheims et al, 1996;Dedysh et al, 2006), acidic mining lakes (Kleinsteuber et al, 2008), water distribution systems (Martiny et al, 2005) and caves (Zimmermann et al, 2005;Meisinger et al, 2007). The range of phylogenetic diversity in the Acidobacteria is nearly as great as in the Proteobacteria (Hugenholtz et al, 1998a).…”
Section: Introductionmentioning
confidence: 99%
“…and Ca. C. thermophilum isolates (Pierson and Castenholz, 1974;Bryant et al, 2007). These observations suggest that these three populations harvest primarily 700-to 750-nm light, and finer niche differentiation within this group is precedented by the BChl-d-containing Chlorobiales.…”
Section: Description Of Functional Guildsmentioning
confidence: 81%
“…High-performance liquid chromatographic analysis of pigments extracted from the Mushroom Spring mat will be published elsewhere (M Pagel and DA Bryant, unpublished data), but preliminary results indicated the presence of BChl-d, which replaces BChl-c as the aggregated pigments within the chlorosomes of 'green' chlorophototrophic Chlorobiales. Other Cluster-5 scaffolds contained homologs of the reaction center subunit gene pscA ('OS GSB PscA'; Bryant et al, 2007), pscB, pscD as well as csmC, a gene encoding a chlorosome envelope protein that has no homologs in other chlorosome-containing chlorophototrophs and thus is currently diagnostic for Chlorobiales (Bryant et al, 2011).…”
Section: Major Populations and Their Functional Potentialmentioning
confidence: 99%
“…Unraveling the microbial composition and processes occurring in these systems will not only help optimize the technical processes but can also lead to the discovery of novel pathways and organisms. In the era of next-generation sequencing techniques, metagenomics-based approaches have enabled the discovery of a suite of novel microbial pathways (Schleper et al, 2005;Bryant et al, 2007;Ettwig et al, 2010;Carrión et al, 2015) and the expansion of the tree of life (Brown et al, 2015). Some of these discoveries have been made in technical systems; for example, novel candidate phyla and expanded metabolic versatility have been identified in aerobic and anaerobic bioreactors (Wexler et al, 2005;Rinke et al, 2013;Nobu et al, 2015).…”
Section: Introductionmentioning
confidence: 99%