Pigments accumulation via light and oxygen in Rhodobacter capsulatus strain XJ-1 isolated from saline soil.
J Basic Microbiol
; 54(8): 828-34, 2014 Aug.
Article
em En
| MEDLINE
| ID: mdl-23686461
ABSTRACT
A Rhodobacter capsulatus strain, designated XJ-1, isolated from saline soil, accumulated almost only one kind of bacteriochlorophyll a anaerobically in the light, aerobically in the light and dark, and the relative contents of the bacteriochlorophyll a were 44.61, 74.89, and 77.53% of the total pigments, respectively. A new purple pigment appeared only in aerobic-light grown cells, exhibited absorption maxima at 355, 389, 520, 621, and 755 nm, especially distinctly unusual peak at 621 nm, whereas vanished in anaerobic-light and in aerobic-dark culture. Spheroidene and OH-spheroidene predominated in anaerobic phototrophic cultures. Spheroidenone was the sole carotenoid when exposed to both light and oxygen. The second keto-carotenoids, OH-spheroidenone, presented only in aerobic-dark culture in addition to spheroidenone. Strain XJ-1 would be a good model organism for the further illustration of the regulation of bacteriochlorophyll biosynthesis gene expression in response to unique habitat.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Feofitinas
/
Proteínas de Bactérias
/
Bacterioclorofilas
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Rhodobacter capsulatus
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article