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Applied and Environmental Microbiology, January 2005, p. 344-353, Vol. 71, No. 1
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.1.344-353.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Roseobacter-Like Bacteria in Red and Mediterranean Sea Aerobic Anoxygenic Photosynthetic Populations

Aia Oz,1 Gazalah Sabehi,1 Michal Koblízek,2 Ramon Massana,3 and Oded Béjà1*

Department of Biology, Technion-Israel Institute of Technology, Haifa, Israel,1 Institute of Microbiology, Trebon, and Institute of Physical Biology, Nove Hrady, Czech Republic,2 Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, CSIC, Barcelona, Spain3

Received 18 April 2004/ Accepted 7 July 2004

Bacteriochlorophyll a-containing aerobic anoxygenic phototrophs (AAnP) have been proposed to account for up to 11% of the total surface water microbial community and to potentially have great ecological importance in the world's oceans. Recently, environmental and genomic data based on analysis of the pufM gene identified the existence of {alpha}-proteobacteria as well as possible {gamma}-like proteobacteria among AAnP in the Pacific Ocean. Here we report on analyses of environmental samples from the Red and Mediterranean Seas by using pufM as well as the bchX and bchL genes as molecular markers. The majority of photosynthesis genes retrieved from these seas were related to Roseobacter-like AAnP sequences. Furthermore, the sequence of a novel photosynthetic operon organization from an uncultured Roseobacter-like bacterial artificial chromosome retrieved from the Red Sea is described. The data show the presence of Roseobacter-like bacteria in Red and Mediterranean Sea AAnP populations in the seasons analyzed.

* Corresponding author. Mailing address: Department of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel. Phone: 972 4 829 3961. Fax: 972 4 822 5153. E-mail: beja{at}techunix.technion.ac.il.

Applied and Environmental Microbiology, January 2005, p. 344-353, Vol. 71, No. 1
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.1.344-353.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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