Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes
Identifieur interne : 000212 ( Main/Exploration ); précédent : 000211; suivant : 000213Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes
Auteurs : Yonghui Zeng [République tchèque] ; Fuying Feng [République populaire de Chine] ; Hana Medová [République tchèque] ; Jason Dean [République tchèque] ; Michal Koblížek [République tchèque]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2014.
Abstract
Photosynthesis is one of the most fundamental biological processes on Earth. To date, species capable of performing (bacterio)chlorophyll-based phototrophy have been reported in six bacterial phyla. Here we report a phototrophic bacterium belonging to the rare and understudied phylum Gemmatimonadetes. This strain, isolated from a freshwater lake in the Gobi Desert, contains fully functional photosynthetic reaction centers. Its photosynthesis genes appear to originate from an ancient horizontal gene transfer from a purple phototrophic bacterium. Our findings not only demonstrate that Gemmatimonadetes represents a new phototrophic bacterial phylum, but also present, to our knowledge, the first evidence that genes for (bacterio)chlorophyll-based phototrophy can be transferred between distant bacterial phyla.
Url:
DOI: 10.1073/pnas.1400295111
PubMed: 24821787
PubMed Central: 4040607
Affiliations:
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