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Professor, Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel Ph.D., 1998, Weizmann Institute of Science
Office: (972)-4-8293961
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Environmental Genomics is a new emerging field that enables us to look at parts of the ocean that were, until recently, masked to us. With present estimates suggesting that >99% of the microorganisms in most environments are not amenable to growth in pure culture, thus very little is known about their physiology and roles in the ocean. These organisms can, however, be categorized into phylotypes according to their ribosomal RNA (rRNA) genes, which can be amplified directly from environmental DNA extracts, cloned, and sequenced. Although this approach has provided information on the identity and distribution of microbial species, rRNA gene sequences alone do not reveal the physiology, biochemistry, or ecological function of uncultivated microorganisms. This problem can be now bypassed by accessing the genomes of these microorganisms and identifying protein coding genes and biochemical pathways that will shed some light on their physiological properties and ecological function.
To illuminate the role of microorganisms in the open seas, the lab is exploring the metabolism of planktonic microbes using novel molecular biology techniques, along with functional genomics and bioinformatics. The lab is now focusing on photosynthesis genes found in viruses that infect cyanobacteria and on developing different functional metagenomic screens.



The Lab
Oded Beja (Principal Investigator)
Mira Rosenberg (Lab Manager) Ultramicroscopy
Alon Philosof (Ph.D. student) Marine microbial omics
Hagay Enav (joint Ph.D. student with Prof. Yael Mandel-Gutfreund) Phage-bacteria co-evolution
Svetlana Fridman (joint Ph.D. student with Prof. Debbie Lindell) Viral photosystem-I
Yoni Sher (Postdoctoral Fellow) Metagenomics of biopolymers degradation
Shirley Larom (Postdoctoral Fellow) Viral photosynthesis
Alumni
Aia Oz
Keren Limor
Sima Usvyatsov
Shani Tzachor
Dr. Gazalah Sabehi
Dr. Gil Zeidner
Dr. Rina Anati
Dr. Natalya Yutin
Dr. Baruch Karniol
Dr. Dikla Man-Aharonovich
Dr. Itai Sharon
Dr. Nof Atamna-Ismaeel
Dr. Ariella Alperovitch-Lavy
Dr. Roi Feingersch
Dr. Idan Bodaker
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Publications (since 2000)
2013 Enav, H., Mandel-Gutfreund, Y. and Béjà, O. Metagenomic analysis suggests viral induced shift of host metabolism toward nucleotide biosynthesis. submitted Sabehi, G., and Béjà, O. Preparation of BAC libraries from marine microbial populations. Methods Enzymol. submitted Philosof, A., and Béjà, O. (2013) Bacterial, archaeal and viral-like rhodopsins from the Red Sea. Environ. Microbiol. Rep. 5, 475-482. ![]() Béjà,
O.,
Pinhassi, J. and Spudich, J.L. Proteorhodopsins:
widespread microbial light-driven proton pumps. In:
Levin S.A. (ed.) Encyclopedia of
Biodiversity 6, 280-285. Finkel, O.M., Béjà, O., and Belkin, S. (2013) Global abundance of microbial rhodopsins. ISME J. 7, 448-451. ![]() 2012 Mazor, Y.,
Greenberg, I., Toporik, H., Béjà, O., and
Nelson, N. (2012) The evolution of PSI in light of phage
encoded reaction centers. Phil. Trans. R.
Soc. B. 367, 3400-3405.
Bodaker, I., Suzuki,
M.T., Oren, O.,
and Béjà, O. (2012)
Dead Sea rhodopsins revisited. Environ. Microbiol. Rep. 4, 617-621.
![]() Béjà, O., Fridman, S., and Glaser, F. (2012) Viral clones from the GOS expedition with an unusual photosystem-I gene cassette organization. ISME J. 6, 1617-1620. Supplementary
InformationAtamna-Ismaeel, N., Finkel, O.M., Glaser, F., von Mering, C., Vorholt, J.A., Koblizek, M., Belkin, S., and Béjà, O. (2012) Bacterial anoxygenic photosynthesis on plant leaf surfaces. Environ. Microbiol. Rep. 4, 209-216. ![]() Feingersch, R., Philosof, A., Mejuch, T., Glaser, F., Alalouf, O., Shoham, Y. and Béjà, O. (2012) Potential for phosphite and phosphonate utilization by Prochlorococcus. ISME J. 6, 827-834. ![]() Enav,
H., Béjà, O., and Mandel-Gutfreund,
Y. (2012) Cyanophage tRNAs may play a role in
cross-infectivity of oceanic Prochlorococcus and
Synechococcus
hosts. ISME
J. 6, 619-628. ![]() Atamna-Ismaeel, N., Finkel, O.M., Glaser, F., Sharon, I., Schneider, R., Post, A.F., Spudich, J.L., von Mering, C., Vorholt, J.A., Iluz, D., Béjà, O. and Belkin, S. (2012) Microbial rhodopsins on leaf surfaces of terrestrial plants. Environ. Microbiol. 14, 140-146. Special Issue: Omics Driven Microbial Ecology See also Science Editor's
Choice on this work2011 Philosof, A., Battchikova, N., Aro, E.-M., and Béjà, O. (2011) Marine cyanophages: Tinkering with the electron transport chain. ISME J. 5, 1568-1570. ![]() Sharon, I., Battchikova, N., Aro, E.-M., Giglione, C., Meinnel, T., Glaser, F., Pinter, R.Y., Breitbart, M., Rohwer, F., and Béjà, O. (2011) Comparative metagenomics of microbial traits within oceanic viral communities. ISME J. 5, 1178-1190. ![]() Check also the accompanying VirMic website Yogev, T., Rahav, E., Bar Zeev, E., Aharonovich, D., Stambler, N., Kress, N., Béjà, O., Mulholland, M., Herut, B., and Berman-Frank, I. (2011) Is dinitrogen fixation significant in the Levantine Basin, East Mediterranean Sea? Environ. Microbiol. 13, 854-871. ![]() See also Michael Krom's Highlight paper Alperovitch*, A., Sharon*, I., Rohwer, F., Aro, E.M., Milo, R., Nelson, N., and Béjà, O. (2011) Reconstructing a puzzle: Existence of cyanophages containing both photosystem-I & photosystem-II gene-suites inferred from oceanic metagenomic datasets. Environ. Microbiol. 13, 24-32. ![]() *equal contribution 2010 Koh, Y.E., Atamna-Ismaeel, N., Andrew R. Martin, A.R., Cowie, R.O.M., Béjà, O. Davy, S.K., and Ryan, K.G. (2010) Proteorhodopsin-bearing bacteria in Antarctic sea ice. Appl. Environ. Microbiol. 76, 5918-5925. ![]() ![]() This article is featured in PLoS Hubs: Biodiversity ![]() Man-Aharonovich*, D., Philosof*, A., Kirkup, B.C., Le Gall, F., Yogev, T., Berman-Frank, I., Polz, M.F., Vaulot, D., and Béjà, O. (2010) Diversity of active marine picoeukaryotes in the Eastern Mediterranean Sea unveiled using photosystem-II psbA transcripts. ISME J. 4, 1044-1052. *equal contribution Corrigendum: Atamna-Ismaeel, N., et al. (2010) Widespread distribution of proteorhodopsins in freshwater and brackish ecosystems. ISME J. 4, 462. Correction to: ISME J. (2008) 2, 656-662. ![]() Bodaker*, I., Sharon*, I., Suzuki, M.T., Feingersch, R., Shmoish, M., Andreishcheva, E., Sogin, M.L., Rosenberg, M., Maguire, M.E., Belkin, S., Oren, O., and Béjà, O. (2010) Comparative community genomics in the Dead Sea, an increasingly extreme environment. ISME J. 4 , 399-407. *equal contribution Feingersch, R., Suzuki, M.T., Shmoish, M., Sharon, I., Sabehi, G., Partensky, F., and Béjà, O. (2010) Microbial community genomics in eastern Mediterranean Sea surface waters. ISME J. 4, 78-87. Mano, A., Tuller, T., Béjà, O., and Pinter, R.Y. (2010) Comparative classification of species and the study of pathway evolution based on the alignment of metabolic pathways. BMC Bioinformatics 11, S38. ![]() 2009 Bodaker, I., Béjà, O., Sharon, I., Feingersch, R., Rosenberg, M., Oren, A., Hindiyeh, M.Y., and Malkawi, H.I. (2009) Archaeal diversity in the Dead Sea: microbial survival under increasingly harsh conditions. Natural Resources and Environmental Issues V5, Article 25. Philosof, A., Sabehi, G., and Béjà, O. (2009) Comparative analysis of actinobacterial genomic fragments from Lake Kinneret. Environ. Microbiol. 11, 3189-3200. ![]() Sharon*, I., Alperovitch*, A., Rohwer,
F., Haynes, M., Glaser, F., Atamna-Ismaeel, N., Pinter,
R.Y., Partensky, F., Koonin, E.V., Wolf Y.I., Nelson, N.
and Béjà, O. (2009)
Photosystem-I gene cassettes are present in marine virus
genomes. Nature 461, 258-262. Supplementary
Information*equal contribution Yutin, N., Suzuki, M.T., Rosenberg, M., Rotem, D., Madigan, M.T., Süling, J., Imhoff, J.F., and Béjà, O. (2009) BchY-based degenerate primers target all types of anoxygenic photosynthetic bacteria in a single PCR reaction. Appl. Environ. Microbiol. 75, 7556-7559. Supplementary
MaterialFeingersch, R., and Béjà, O. (2009) Bias in assessments of marine SAR11 biodiversity in environmental fosmid & BAC libraries? ISME J. 3, 1117-1119. Tzahor*, S., Man-Aharonovich*, D., Kirkup, B.C., Yogev, T., Berman-Frank, I., Polz, M., Béjà, O., and Mandel-Gutfreund, Y. (2009) A supervised learning approach for taxonomic classification of core-photosystem-II genes and transcripts in the marine environment. BMC Genomics 10:229. ![]() *equal contribution Loy, A., Duller, S., Baranyi, C., Mußmann, M., Ott, J., Sharon, I., Béjà, O., Le Paslier, D., Dahl, C., and Wagner, M. (2009) Reverse dissimilatory sulfite reductase and other Dsr Proteins in sulfur-oxidizing bacteria: evolutionary history and suitability as phylogenetic markers. Environ. Microbiol. 11, 289-299. ![]() 2008 Yutin,
N., Béjà,
O., and
Suzuki, M.T. The
use of denaturing gradient gel electrophoresis with
fully degenerate pufM
primers to monitor aerobic anoxygenic phototrophic
assemblages. Limnol. Oceanogr. Methods 6, 427-440.
Bar Zeev, E., Yogev, T., Man-Aharonovich, D., Kress, N., Herut, B., Béjà, O. and Berman-Frank, I. (2008) Seasonal dynamics of the endosymbiotic, nitrogen-fixing cyanobacterium Richelia intracellularis in the eastern Mediterranean Sea. ISME J. 2, 911-923. ![]() Atamna-Ismaeel, N., Sabehi, G., Sharon, I., Witzel, K-P., Labrenz, M., Jürgens, K., Barkay, T., Stomp, M., Huisman, J., and Béjà, O. (2008) Widespread distribution of proteorhodopsins in freshwater and brackish ecosystems. ISME J. 2, 656-662. Corrigendum ISME J. (2010) 4, 462. ![]() Kagan, J., Sharon, I., Béjà, O., and Kuhn, J. (2008) The tryptophan pathway genes of the Sargasso Sea metagenome: new operon structures and the prevalence of non-operon organization. Genome Biol. 9, R20 Massana, R., Karniol, B., Pommier, T., Bodaker, I., and Béjà, O. (2008) Metagenomic retrieval of a ribosomal DNA repeat array from an uncultured marine alveolate. Environ. Microbiol. 10, 1335–1343. ![]() Béjà, O., and Suzuki, M.T. Photoheterotrophic marine prokaryotes. In Microbial Ecology of the Oceans 131-157. Kirchman, D.L. (ed). New York: John Wiley & Sons, Inc. 2007 Sharon*, I., Tzahor*, S., Williamson*, S., Shmoish, M., Man-Aharonovich, D., Rusch, D.B., Yooseph, S., Zeidner, G., Golden, S.S., Mackey, S.R., Adir, N., Weingart, U., Horn, D., Venter, J.C, Mandel-Gutfreund, Y., and Béjà, O. (2007) Viral photosynthetic reaction center genes and transcripts in the marine environment. ISME J. 1, 492-501. Supplementary
information*equal contribution See also a series of papers on the Global Ocean Sampling Expedition published in PLoS Biology Man-Aharonovich, D.,
Kress, N., Bar Zeev, E., Berman-Frank, I., and Béjà, O.
(2007) Molecular ecology of nifH genes and
transcripts in Eastern Mediterranean Sea. Environ. Microbiol. 9,
2354-2363.
![]() Yutin, N., Suzuki, M.T., Teeling, H., Weber, M., Venter, J.C., Rusch, D. and Béjà, O. (2007) Assessing diversity and biogeography of aerobic anoxygenic phototrophic bacteria in surface waters of the Atlantic and Pacific Oceans using the Global Ocean Sampling expedition metagenomes. Environ. Microbiol. 9, 1464-1475. Supplementary
materialsSabehi*, G., Kirkup*, B.C., Rosenberg, M., Stambler, N., Polz, M.F., and Béjà, O. (2007) Adaptation and spectral tuning in divergent marine proteorhodopsins from the eastern Mediterranean and the Sargasso Seas. ISME J. 1, 48-55. ![]() Supplementary materials *equal contribution See also Nature Reviews in
Microbiology
Research
Highlights on
this workSuzuki, M.T., and Béjà, O. (2007) An elusive marine photosynthetic bacterium is finally unveiled. Proc. Natl. Acad. Sci. USA 104, 2561–2562. ![]() Sabehi, G., and Béjà, O. (2007) BAC libraries construction from marine microbial assemblages. Molecular Microbial Ecology Manual 1863-1879. 2005 Yutin, N., Suzuki, M.T., and Béjà, O. (2005) Novel primers reveal a wider diversity among marine aerobic anoxygenic phototrohs. Appl. Environ. Microbiol. 71, 8958-8962.
Supplemental online materialsZeidner, G., and Béjà, O. (2005) Community-level analysis of phototrophy: psbA gene diversity. Methods Enzymol. 397, 372-380. ![]() Yutin, N., and Béjà, O. (2005) Putative novel photosynthetic reaction center organizations in marine aerobic anoxygenic photosynthetic bacteria: insights from environmental genomics & metagenomics. Environ. Microbiol. 7, 2027-2033. ![]() *equal contribution Zeidner, G., Bielawski, J.P.,
Shmoish, M., Scanlan, D.J., Sabehi, G., and Béjà, O.
(2005) Potential photosynthesis gene recombination
between Prochlorococcus
& Synechococcus
via viral intermediates. Environ. Microbiol. 7, 1505-1513. ![]() Oz, A., Sabehi, G., Koblízek, M., Massana, R., and Béjà, O. (2005) Roseobacter-like bacteria in Red and Mediterranean Sea aerobic anoxygenic photosynthetic populations. Appl. Environ. Microbiol. 71, 344-353. ![]() 2004 Suzuki, M.T., Preston, C.M., Béjà, O., de la Torre, R.J., Steward, G, and DeLong, E.F. (2004) Quantitative phylogenetic screening of ribosomal RNA gene-containing clones in Bacterial Artificial Chromosome (BAC) libraries from different depths in Monterey Bay. Microbial Ecol. 48, 473-488. ![]() Bielawski, J. P., Dunn, K.A., Sabehi, G., and Béjà, O. (2004) Darwinian adaptation of proteorhodopsin to different light intensities in the environment. Proc. Natl. Acad. Sci. USA 141, 14824–14829. ![]() Sabehi, G., Béjà O., Preston, C. M., Suzuki, M. T., and DeLong, E.F. (2004) Different SAR86 subgroups harbour divergent proteorhodopsins. Environ. Microbiol. 6, 903-910. ![]() Man-Aharonovich,
D., Sabehi, G.,
Sineshchekov O.A., Spudich, E.N., Spudich, J.L., and Béjà, O.
(2004)
Characterization of RS29, a blue-green proteorhodopsin
variant from the Red Sea. Photochem. Photobiol.
Sci. 3,
459-462. Zeidner,
G., and Béjà,
O. (2004) The use of DGGE analyses to
explore eastern Mediterranean and Red Sea marine
picophytoplankton assemblages. Environ. Microbiol. 6, 528-534. 2003 Koblizek M., Béjà, O., Bidigare R.R., Christensen S., Benitez-Nelson B., Vetriani C., Kolber M.K., Falkowski P.G., Kolber Z.S. (2003) Isolation and Characterization of Erythrobacter sp. Strains from the Upper Ocean. Arch. Microbiol. 180, 327-338.
de la Torre,
R.J., Christianson, L., Béjà, O.,
Suzuki, M.T., Karl, D., Heidelberg, J.F., and DeLong,
E.F. (2003) Proteorhodopsin genes are widely distributed
among divergent bacterial taxa. Proc. Natl. Acad. Sci. USA 100,
12830-12835. Sabehi, G.,
Massana, R., Bielawski J.P., Rosenberg
M., Delong, E.F., and Béjà,
O. (2003) Novel
Proteorhodopsin Variants from the Mediterranean and Red
Seas. Environ.
Microbiol. 5,
842-849.
Zeidner, G.,
Preston, C.M., DeLong, E.F., Massana, R., Post, A.F.,
Scanlan, D.J., and Béjà, O. (2003)
Molecular diversity among marine picophytoplankton as
revealed by psbA analyses. Environ. Microbiol.
5,
212-216.
![]() 2002 Béjà, O. , Suzuki, M.T., Heidelberg, J.F., Nelson, W.C., Preston, C.M., Hamada, T., Eisen, J.A., Fraser, C.M. and DeLong, E.F. (2002). Unsuspected diversity among marine aerobic anoxygenic phototrophs. Nature 415, 630-633 . See also news feature and news and views articles on this work Béjà, O.
, Koonin, E.V., Aravind, L., Taylor, L.T., Seitz,
H., Stein, J.L., Bensen, D.C., Feldman, R.A., Swanson,
R.V. and DeLong, E.F. (2002). Comparative genomic
analysis of archaeal genotypic variants in a single
population, and in two different oceanic provinces. Appl. Environ.
Microbiol. 68, 335-345. 2001 Béjà, O. , Spudich, E.N., Spudich, J.L., Leclerc, M., and DeLong, E.F. (2001). Proteorhodopsin Phototrophy in the Ocean. Nature 411 , 786-789 .
Suzuki,
M.T., Béjà, O.,
Taylor, L.T., and DeLong, E.F. (2001).
Phylogenetic analysis of ribosomal RNA operons from
uncultivated coastal marine bacterioplankton. Environ.
Microbiol. 3,
323-331.
2000
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| Research Trip to Eilat | Cave diving in Mexico | Research Trip to Spain |
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| BTR survey to Jordan 2005 | BTR Jordan July 2005 | Dead Sea cruise 2006 |
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| Dead Sea cruise 2007 | Kinneret cruise 2007 | Mediterranean Sea 2009 |
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| Eilat cruise 2010 | Eilat cruise February 2011 |
Eilat Cruise June 2012 |
Last updated May 2013
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| Research | People | Trips/Cruises | Publications | Conferences | VirMic | ![]()
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