Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes
Identifieur interne : 000408 ( Pmc/Corpus ); précédent : 000407; suivant : 000409Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes
Auteurs : Yonghui Zeng ; Fuying Feng ; Hana Medová ; Jason Dean ; Michal KoblížekSource :
- 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
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes</title><author><name sortKey="Zeng, Yonghui" sort="Zeng, Yonghui" uniqKey="Zeng Y" first="Yonghui" last="Zeng">Yonghui Zeng</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation></author><author><name sortKey="Feng, Fuying" sort="Feng, Fuying" uniqKey="Feng F" first="Fuying" last="Feng">Fuying Feng</name><affiliation><nlm:aff wicri:cut="; and" id="aff2">Institute for Applied and Environmental Microbiology, College of Life Sciences,<institution>Inner Mongolia Agricultural University</institution>, Huhhot 010018,<country>China</country></nlm:aff></affiliation></author><author><name sortKey="Medova, Hana" sort="Medova, Hana" uniqKey="Medova H" first="Hana" last="Medová">Hana Medová</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation></author><author><name sortKey="Dean, Jason" sort="Dean, Jason" uniqKey="Dean J" first="Jason" last="Dean">Jason Dean</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation></author><author><name sortKey="Koblizek, Michal" sort="Koblizek, Michal" uniqKey="Koblizek M" first="Michal" last="Koblížek">Michal Koblížek</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation><affiliation><nlm:aff id="aff3">Faculty of Science,<institution>University of South Bohemia</institution>, 37005 České Budějovice,<country>Czech Republic</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24821787</idno><idno type="pmc">4040607</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4040607</idno><idno type="RBID">PMC:4040607</idno><idno type="doi">10.1073/pnas.1400295111</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000408</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes</title><author><name sortKey="Zeng, Yonghui" sort="Zeng, Yonghui" uniqKey="Zeng Y" first="Yonghui" last="Zeng">Yonghui Zeng</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation></author><author><name sortKey="Feng, Fuying" sort="Feng, Fuying" uniqKey="Feng F" first="Fuying" last="Feng">Fuying Feng</name><affiliation><nlm:aff wicri:cut="; and" id="aff2">Institute for Applied and Environmental Microbiology, College of Life Sciences,<institution>Inner Mongolia Agricultural University</institution>, Huhhot 010018,<country>China</country></nlm:aff></affiliation></author><author><name sortKey="Medova, Hana" sort="Medova, Hana" uniqKey="Medova H" first="Hana" last="Medová">Hana Medová</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation></author><author><name sortKey="Dean, Jason" sort="Dean, Jason" uniqKey="Dean J" first="Jason" last="Dean">Jason Dean</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation></author><author><name sortKey="Koblizek, Michal" sort="Koblizek, Michal" uniqKey="Koblizek M" first="Michal" last="Koblížek">Michal Koblížek</name><affiliation><nlm:aff id="aff1">Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</nlm:aff></affiliation><affiliation><nlm:aff id="aff3">Faculty of Science,<institution>University of South Bohemia</institution>, 37005 České Budějovice,<country>Czech Republic</country></nlm:aff></affiliation></author></analytic><series><title level="j">Proceedings of the National Academy of Sciences of the United States of America</title><idno type="ISSN">0027-8424</idno><idno type="eISSN">1091-6490</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><title>Significance</title><p>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.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Proc Natl Acad Sci U S A</journal-id><journal-id journal-id-type="iso-abbrev">Proc. Natl. Acad. Sci. U.S.A</journal-id><journal-id journal-id-type="hwp">pnas</journal-id><journal-id journal-id-type="pmc">pnas</journal-id><journal-id journal-id-type="publisher-id">PNAS</journal-id><journal-title-group><journal-title>Proceedings of the National Academy of Sciences of the United States of America</journal-title></journal-title-group><issn pub-type="ppub">0027-8424</issn><issn pub-type="epub">1091-6490</issn><publisher><publisher-name>National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">24821787</article-id><article-id pub-id-type="pmc">4040607</article-id><article-id pub-id-type="publisher-id">201400295</article-id><article-id pub-id-type="doi">10.1073/pnas.1400295111</article-id><article-categories><subj-group subj-group-type="heading"><subject>Biological Sciences</subject><subj-group><subject>Microbiology</subject></subj-group></subj-group></article-categories><title-group><article-title>Functional type 2 photosynthetic reaction centers found in the rare bacterial phylum Gemmatimonadetes</article-title><alt-title alt-title-type="short">Phototrophy in bacterial phylum Gemmatimonadetes</alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Zeng</surname><given-names>Yonghui</given-names></name><xref ref-type="aff" rid="aff1"><sup>a</sup></xref></contrib><contrib contrib-type="author"><name><surname>Feng</surname><given-names>Fuying</given-names></name><xref ref-type="aff" rid="aff2"><sup>b</sup></xref></contrib><contrib contrib-type="author"><name><surname>Medová</surname><given-names>Hana</given-names></name><xref ref-type="aff" rid="aff1"><sup>a</sup></xref></contrib><contrib contrib-type="author"><name><surname>Dean</surname><given-names>Jason</given-names></name><xref ref-type="aff" rid="aff1"><sup>a</sup></xref></contrib><contrib contrib-type="author"><name><surname>Koblížek</surname><given-names>Michal</given-names></name><xref ref-type="aff" rid="aff1"><sup>a</sup></xref><xref ref-type="aff" rid="aff3"><sup>c</sup></xref><xref ref-type="corresp" rid="cor1"><sup>1</sup></xref></contrib><aff id="aff1"><sup>a</sup>Department of Phototrophic Microorganisms,<institution>Institute of Microbiology CAS</institution>, 37981 Třeboň,<country>Czech Republic</country>;</aff><aff id="aff2"><sup>b</sup>Institute for Applied and Environmental Microbiology, College of Life Sciences,<institution>Inner Mongolia Agricultural University</institution>, Huhhot 010018,<country>China</country>; and</aff><aff id="aff3"><sup>c</sup>Faculty of Science,<institution>University of South Bohemia</institution>, 37005 České Budějovice,<country>Czech Republic</country></aff></contrib-group><author-notes><corresp id="cor1"><sup>1</sup>To whom correspondence should be addressed. E-mail: <email>koblizek@alga.cz</email>.</corresp><fn fn-type="edited-by"><p>Edited by Robert E. Blankenship, Washington University in St. Louis, St. Louis, MO, and accepted by the Editorial Board April 15, 2014 (received for review January 8, 2014)</p></fn><fn fn-type="con"><p>Author contributions: Y.Z. and M.K. designed research; Y.Z., F.F., H.M., J.D., and M.K. performed research; Y.Z. and M.K. analyzed data; and Y.Z. and M.K. wrote the paper.</p></fn></author-notes><pub-date pub-type="ppub"><day>27</day><month>5</month><year>2014</year></pub-date><pub-date pub-type="epub"><day>12</day><month>5</month><year>2014</year></pub-date><volume>111</volume><issue>21</issue><fpage>7795</fpage><lpage>7800</lpage><self-uri xlink:title="pdf" xlink:type="simple" xlink:href="pnas.201400295.pdf"></self-uri><abstract abstract-type="executive-summary"><title>Significance</title><p>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.</p></abstract><abstract><p>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 <italic>a</italic>-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) photosynthetic 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.</p></abstract><kwd-group><kwd>anoxygenic photosynthesis</kwd><kwd>horizontal gene transfer</kwd><kwd>bacterial pigments</kwd><kwd>aerobic photoheterotroph</kwd><kwd>fluorescence imaging system</kwd></kwd-group><counts><page-count count="6"></page-count></counts></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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