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Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes
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SYSNO ASEP 0440371 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes Author(s) Zeng, Y. (CZ)
Feng, F. (CN)
Medová, Hana (MBU-M)
Dean, Jason Lawrence (MBU-M)
Koblížek, Michal (MBU-M) RID, ORCIDNumber of authors 5 Source Title Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences - ISSN 0027-8424
Roč. 111, č. 21 (2014), s. 7795-7800Number of pages 6 s. Language eng - English Country US - United States Keywords anoxygenic photosynthesis ; pigments ; horizontal gene transfer Subject RIV EE - Microbiology, Virology R&D Projects P501/10/0221 GA ČR - Czech Science Foundation (CSF) ED2.1.00/03.0110 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EE2.3.30.0059 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support MBU-M - RVO:61388971 UT WOS 000336411300066 Annotation Photosynthetic bacteria emerged on Earth more than 3 Gyr ago. To date, despite a long evolutionary history, species containing (bacterio) chlorophyll-based reaction centers have been reported in only 6 out of more than 30 formally described bacterial phyla: Cyanobacteria, Proteobacteria, Chlorobi, Chloroflexi, Firmicutes, and Acidobacteria. Here we describe a bacteriochlorophyll a-producing isolate AP64 that belongs to the poorly characterized phylum Gemmatimonadetes. This red-pigmented semiaerobic strain was isolated from a freshwater lake in the western Gobi Desert. It contains fully functional type 2 (pheophytin-quinone) photo-synthetic reaction centers but does not assimilate inorganic carbon, suggesting that it performs a photoheterotrophic lifestyle. Full genome sequencing revealed the presence of a 42.3-kb-long photosynthesis gene cluster (PGC) in its genome. The organization and phylogeny of its photosynthesis genes suggests an ancient acquisition of PGC via horizontal transfer from purple phototrophic bacteria. The data presented here document that Gemmatimonadetes is the seventh bacterial phylum containing (bacterio) chlorophyll-based phototrophic species. To our knowledge, these data provide the first evidence that (bacterio) chlorophyll-based phototrophy can be transferred between distant bacterial phyla, providing new insights into the evolution of bacterial photosynthesis. Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2015
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