Light stimulates growth of proteorhodopsin-containing marine Flavobacteria

Laura Gómez-Consarnau, José M. González, Montserrat Coll-Lladó, Pontus Gourdon, Torbjörn Pascher, Richard Neutze, Carlos Pedrós-Alió and Jarone Pinhassi ()
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Laura Gómez-Consarnau: University of Kalmar
José M. González: University of La Laguna
Montserrat Coll-Lladó: Institut de Ciències del Mar, CMIMA-CSIC
Pontus Gourdon: Chalmers University of Technology
Torbjörn Pascher: Lund University
Richard Neutze: Gothenburg University
Carlos Pedrós-Alió: Institut de Ciències del Mar, CMIMA-CSIC
Jarone Pinhassi: University of Kalmar

Nature, 2007, vol. 445, issue 7124, 210-213

Abstract: Proteorhodopsin goes large The discovery of bacterial proteorhodopsin genes in the sea six years ago hinted at the existence of a previously unknown form of energy generation from sunlight in surface waters. Gene sequences encoding proteorhodopsin have since been found broadly distributed in the world's oceans but the lack of proteorhodopsin-containing bacterial isolates in culture has hampered functional studies of this novel type of phototrophy. Now, following complete genome analysis, proteorhodopsin genes have been found in three marine Flavobacteria. Growth experiments showed an increase in cell yield when one of these bacteria was grown under light. Flavobacteria are an important component of marine bacterioplankton, so far from being a curiosity, proteorhodopsin appears to be an important player in the energy balance of the oceans.

Date: 2007
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DOI: 10.1038/nature05381

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