ArticleScientific reports2017
Cytological and molecular characterization of carotenoid accumulation in normal and high-lycopene mutant oranges.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 40 citations in OpenAlex.
- Bioconversion of carotenoids into high-value crocins using a marine sponge carotenoid cleavage dioxygenase.The New phytologist · 2026Article
- Transmission electron microscopy reveals the impact of Or gene on chromoplast morphology and β-carotene accumulation in Or gene introgressed tropical cauliflower.Protoplasma · 2026Article
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- Juices and By-Products of Red-Fleshed Sweet Oranges: Assessment of Bioactive and Nutritional Compounds.Foods (Basel, Switzerland) · 2023Article
- Bioactive Compounds, Nutritional Quality and Antioxidant Capacity of the Red-Fleshed Kirkwood Navel and Ruby Valencia Oranges.Antioxidants (Basel, Switzerland) · 2022Article
- Comparative transcriptomics of wild and commercial Citrus during early ripening reveals how domestication shaped fruit gene expression.BMC plant biology · 2022Article
- A comprehensive analysis of carotenoids metabolism in two red-fleshed mutants of Navel and Valencia sweet oranges (Frontiers in plant science · 2022Article
- Overexpression of the Golden SNP-CarryingAntioxidants (Basel, Switzerland) · 2021Article
- Transcriptional Analysis of Carotenoids Accumulation and Metabolism in a Pink-Fleshed Lemon Mutant.Genes · 2020Article
- Quantitative trait loci and differential gene expression analyses reveal the genetic basis for negatively associated β-carotene and starch content in hexaploid sweetpotato [Ipomoea batatas (L.) Lam.].TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- A mutant allele of ζ-carotene isomerase (Z-ISO) is associated with the yellow pigmentation of the "Pinalate" sweet orange mutant and reveals new insights into its role in fruit carotenogenesis.BMC plant biology · 2019Article
- Microscopic Analyses of Fruit Cell Plastid Development in Loquat (Molecules (Basel, Switzerland) · 2019Article
- Exploring the differential mechanisms of carotenoid biosynthesis in the yellow peel and red flesh of papaya.BMC genomics · 2019Article
- Article
- Transcriptome analysis in tissue sectors with contrasting crocins accumulation provides novel insights into apocarotenoid biosynthesis and regulation during chromoplast biogenesis.Scientific reports · 2018Article
- Article
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Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ripe Cara Cara sweet orange contains 25 times as much carotenoids in flesh as Newhall sweet orange, due to high accumulation of carotenes, mainly phytoene, lycopene and phytofluene. Only yellow globular chromoplasts were observed in Newhall flesh. Distinct yellow globular and red elongated crystalline chromoplasts were found in Cara Cara but only one type of chromoplast was present in each cell. The red crystalline chromoplasts contained lycopene as a dominant carotenoid and were associated with characteristic carotenoid sequestering structures. The increased accumulation of linear carotenes in Cara Cara is not explained by differences in expression of all 18 carotenogenic genes or gene family members examined, or sequence or abundance of mRNAs from phytoene synthase (PSY) and chromoplast-specific lycopene β-cyclase (CYCB) alleles. 2-(4-Chlorophenylthio)-triethylamine hydrochloride (CPTA) enhanced lycopene accumulation and induced occurrence of red crystalline chromoplasts in cultured Newhall juice vesicles, indicating that carotenoid synthesis and accumulation can directly affect chromoplast differentiation and structure. Norflurazon (NFZ) treatment resulted in high accumulation of phytoene and phytofluene in both oranges, and the biosynthetic activity upstream of phytoene desaturase was similar in Newhall and Cara Cara. Possible mechanisms for high carotene accumulation and unique development of red crystalline chromoplasts in Cara Cara are discussed.
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