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Journal of Bacteriology, July 2000, p. 3850-3853, Vol. 182, No. 13
0021-9193/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Isolation and Characterization of Canthaxanthin Biosynthesis Genes from the Photosynthetic Bacterium Bradyrhizobium sp. Strain ORS278

Laure Hannibal,1 Jean Lorquin,2,dagger Nicolas Angles D'Ortoli,1 Nelly Garcia,1 Clemence Chaintreuil,1 Catherine Masson-Boivin,1 Bernard Dreyfus,1 and Eric Giraud1,*

Laboratoire des Symbioses Tropicales et Méditerranéennes, IRD, CIRAD, AGRO-M, INRA, 34398 Montpellier, France,1 and Laboratoire de Microbiologie des sols, IRD/ISRA, 1386 Dakar, Senegal2

Received 2 February 2000/Accepted 17 April 2000

A carotenoid biosynthesis gene cluster involved in canthaxanthin production was isolated from the photosynthetic Bradyrhizobium sp. strain ORS278. This cluster includes five genes identified as crtE, crtY, crtI, crtB, and crtW that are organized in at least two operons. The functional assignment of each open reading frame was confirmed by complementation studies.

* Corresponding author. Mailing address: LSTM TA 10/J, Campus de Baillarguet, 34398 Montpellier Cedex 5, France. Phone: (33) 467593783. Fax: (33) 467593802. E-mail: Giraud{at}mpl.ird.fr.

dagger Present address: IRD, Université de Provence, 13288 Marseille, France.

Journal of Bacteriology, July 2000, p. 3850-3853, Vol. 182, No. 13
0021-9193/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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