Rapidity of carotene biosynthesis in Narcissus
نویسندگان
چکیده
منابع مشابه
Carotene biosynthesis in fungi.
Studies on Neurospora crassa and mutants of Phycomyces blakesleeanus have led to a reappraisal of a number of important aspects of carotene biosynthesis. Results obtained from structural investigations, from inhibitor studies and from the use of labelled substrates with carotenogenic extracts of fungal mutants are discussed in the contexts of the stereochemistry, isomerization and dehydrogenati...
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Cell extracts o f the Cl 15 (^-carotene-accumulating) strain o f Phycomyces blakesleeanus were incubated with either [2-l4C]MVA or [1-I4C]IPP and a range o f possible inhibitors of carotenogenesis, including bleaching herbicides, biphenyl com pounds and geranylacetone. Several o f these compounds were potent inhibitors o f /7-carotene formation and caused the accumulation o f phytoene. No other...
متن کاملChemical alteration of carotene biosynthesis in Phycomyces blakesleeanus and mutants.
The effects of diphenylamine, dimethyl sulfoxide, streptomycin, AMO-1618, and beta-ionone on the carotene composition of a wild-type and three mutant strains of Phycomyces blakesleeanus have been examined. Diphenylamine increased the phytoene and phytofluene concentrations of all strains while reducing the levels of the color carotenes. Dimethyl sulfoxide reduced the concentration of both cycli...
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Most information on the biosynthesis of carotenoids is from experiments with fungi, especially Phycomyces blakesleeanus and Mucor hiemalis; with bacteria, notably the photosynthetic bacteria, Rhodospirillum rubrum and Rhodopseudomonas spheroides; and with carrot roots and homogenates, tomato fruit and homogenates, and algae and etiolated seedlings. Synthesis in vitro of carotenoids by the above...
متن کاملEctopic Overexpression of a Novel R2R3-MYB, NtMYB2 from Chinese Narcissus Represses Anthocyanin Biosynthesis in Tobacco.
R2R3 MYB transcription factors play key functions in the regulation of secondary metabolites. In the present study, a R2R3 MYB transcriptional factor NtMYB2 was identified from Chinese narcissus (Narcissus tazetta L. var. Chinensis Roem) and functionally characterized. NtMYB2 belongs to subgroup 4 of the R2R3 MYB transcription factor family that are related to repressor MYBs involved in the reg...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1963
ISSN: 0006-2936
DOI: 10.1042/bj0870238