ACCUMULATION OF β‐CAROTENE IN HALOTOLERANT ALGE: PURIFICATION AND CHARACTERIZATION OF β‐CAROTENE‐RICH GLOBULES FROM DUNALIELLA BARDAWIL (CHLOROPHYCEAE) 1

@article{BenAmotz1982ACCUMULATIONO,
  title={ACCUMULATION OF $\beta$‐CAROTENE IN HALOTOLERANT ALGE: PURIFICATION AND CHARACTERIZATION OF $\beta$‐CAROTENE‐RICH GLOBULES FROM DUNALIELLA BARDAWIL (CHLOROPHYCEAE) 1},
  author={A. Ben-Amotz and A. Katz and M. Avron},
  journal={Journal of Phycology},
  year={1982},
  volume={18}
}
Dunaliella bardawil Ben‐Amotz & Avron, but not most other Dunaliella species, has a unique property of being able to accumulate, in addition to glycerol, large amounts of β‐carotene when cultivated under appropriate conditions. These include high light intensity, a high sodium chloride concentration, nitrate deficiency and extreme temperatures. Under conditions of maximal carotene accumulation D. bardawil contains at least 8% of its dry weight as β‐carotene while D. salina grown under similar… Expand
THE WAVELENGTH DEPENDENCE OF MASSIVE CAROTENE SYNTHESIS IN DUNALIELLA BARDAWIL (CHLOROPHYCEAE) 1
TLDR
Accumulation of β‐carotene and an increase in the ratio of the 9‐cis to the all‐trans isomer are strongly dependent on the light intensity under which the algae are cultivated but are independent of light quality within the photosynthetically active radiation range. Expand
Differential Stereoisomer Compositions of β,β-Carotene in Thylakoids and in Pigment Globules in Dunaliella
TLDR
The results suggest that the globular and thylakoid pools of β,β-carotene are distinct in their biosynthesis and regulation. Expand
MASSIVE ACCUMULATION OF PHYTOENE INDUCED BY NORFLURAZON IN DUNALIELLA BARDAWIL (CHLOROPHYCEAE) PREVENTS RECOVERY FROM PHOTOINHIBITION 1
TLDR
Observations are in agreement with the hypothesis that the accumulated β‐carotene in Dunaliella bardawil protects the cells against injury by excessive irradiation. Expand
On the Factors Which Determine Massive beta-Carotene Accumulation in the Halotolerant Alga Dunaliella bardawil.
TLDR
The results are interpreted as indicating a protecting effect of beta-carotene against injury by high irradiance under conditions of impairment in chlorophyll content per cell. Expand
[41] Biosynthesis of β-carotene in Dunaliella
TLDR
Unicellular algae of the genus Dunaliella are ovoid in shape, contain one large cup-shaped chloroplast, and are motile with two equal long flagellae; the most tolerant species can be grown in a wide range of salt concentrations, from 50 mM to saturated NaCl. Expand
MASSIVE ACCUMULATION OF PHYTOENE INDUCED BY NORFLURAZON IN DUNALIELLA BARDAWIL (CHLOROPHYCEAE) PREVENTS RECOVERY FROM PHOTOINHIBITION 1
The effects of nanomolar to micromolar concentrations of the herbicide norflurazon were studied in Dunaliella bardawil Ben‐Amotz et Avron, a β‐carotene‐accumulating halotolerant alga. The largeExpand
The biotechnology of cultivating Dunaliella for production of β-carotene rich algae
TLDR
Recent developments, which indicate that the stereoisometric mixture of β-carotene present in Dunaliella is preferentially absorbed in animal tissues, have opened new vistas of potential markets for the high β- carotene algae. Expand
Carotenoid and fatty acid metabolism in light‐stressed Dunaliella salina
TLDR
The results indicate that cellular β‐carotene accumulation in D. salina correlates with accumulation of specific fatty acid species (C16:0 and C18:1) rather than with total fatty acid content. Expand
Carotenoid and fatty acid metabolism in nitrogen-starved Dunaliella salina, a unicellular green microalga.
TLDR
For both high-light and nitrogen stress, β-carotene accumulation negatively correlated with the degree of unsaturation of the total fatty acid pool and, within the individual fatty acids, correlated positively with oleic acid biosynthesis, suggesting that oleoic acid may be a key component of the lipid-globule-localized triacylglycerols and thereby in β- carotenes accumulation. Expand
Red Light Control of β-Carotene Isomerisation to 9-cis β-Carotene and Carotenoid Accumulation in Dunaliella salina
TLDR
Dunaliella salina is a rich source of 9-cis β-carotene, which has been identified as an important biomolecule in the treatment of retinal dystrophies and other diseases and was independent of light intensity. Expand
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