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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,
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.

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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