ArticleJournal of experimental botany2014
Involvement of multiple phytoene synthase genes in tissue- and cultivar-specific accumulation of carotenoids in loquat.
Article in Journal of experimental botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.
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37 citing papers in PubMed, 90 citations in OpenAlex.
- Reconfiguring biofortification strategies to transform food systems and address micronutrient deficiency of the 21st century.Journal of integrative plant biology · 2026Review
- Establishment of a TRV-based virus-induced gene silencing system using the vacuum infiltration in Tartary buckwheat.Plant cell reports · 2025Article
- Occurrence of White Flesh Color and Refreshing Flavor FollowingJournal of agricultural and food chemistry · 2025Article
- Overexpressing CsPSY1 Gene of Tea Plant, Encoding a Phytoene Synthase, Improves α-Carotene and β-Carotene Contents in Carrot.Molecular biotechnology · 2024Article
- 15-Foods (Basel, Switzerland) · 2024Article
- Genetic mapping and molecular marker development for white flesh color in tomato.Frontiers in plant science · 2024Article
- Multi-omics analysis provides new insights into the changes of important nutrients and fructose metabolism in loquat bud sport mutant.Frontiers in plant science · 2024Article
- Genome-Wide Identification and Expression Analysis of the SBP-Box Gene Family in Loquat Fruit Development.Genes · 2023Article
- Genome assembly of wild loquat (Horticulture research · 2023Article
- Comprehensive metabolome and transcriptome analyses demonstrate divergent anthocyanin and carotenoid accumulation in fruits of wild and cultivated loquats.Frontiers in plant science · 2023Article
- Comparative transcriptomic and plastid development analysis sheds light on the differential carotenoid accumulation in kiwifruit flesh.Frontiers in plant science · 2023Article
- Mechanism underlying the carotenoid accumulation in shaded tea leaves.Food chemistry: X · 2022Article
- Nucleotide variation in the phytoene synthase (ClPsy1) gene contributes to golden flesh in watermelon (Citrullus lanatus L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Article
- Phytoene Synthase: The Key Rate-Limiting Enzyme of Carotenoid Biosynthesis in Plants.Frontiers in plant science · 2022Review
- Metabolism of Carotenoids and β-Ionone Are Mediated by Carotenogenic Genes andFrontiers in plant science · 2022Article
- An apple (Malus domestica) AP2/ERF transcription factor modulates carotenoid accumulation.Horticulture research · 2021Article
- Genotyping of polyploid plants using quantitative PCR: application in the breeding of white-fleshed triploid loquats (Eriobotrya japonica).Plant methods · 2021Article
- The Genetic Components of a Natural Color Palette: A Comprehensive List of Carotenoid Pathway Mutations in Plants.Frontiers in plant science · 2021Review
- Differential Regulation of Phytoene Synthase PSY1 During Fruit Carotenogenesis in Cultivated and Wild Tomato Species (Plants (Basel, Switzerland) · 2020Article
- Phytoene synthase 2 can compensate for the absence of PSY1 in the control of color in Capsicum fruit.Journal of experimental botany · 2020Article
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Differences in carotenoid accumulation between tissues and cultivars is common in plants. White-fleshed loquat cultivars had low levels of carotenoids in the flesh, but accumulated carotenoids in peel when ripe, and the leaves accumulated similar carotenoids to those in the red-fleshed loquat cultivars. The catalytic activity and expression patterns of four phytoene synthase (PSY) genes, EjPSY1, EjPSY2A, EjPSY2B, and EjPSY3, were analysed to understand their roles in different loquat (Eriobotrya japonica Lindl.) types. EjPSY1 was responsible for carotenoid synthesis in the fruit peel but not the flesh, whereas EjPSY2A was responsible for carotenoid accumulation in flesh of ripening fruit. A mutant EjPSY2A (d) , with the same tissue specificity and expression level as EjPSY2A, but lacking the C-terminal region and corresponding catalytic activity, was discovered in white-fleshed varieties, explaining the lack of carotenoids in the white flesh. The catalytic role of EjPSY2B was most significant in leaves. The tissue-specific expression of EjPSY1 and EjPSY2B explained well how peel and leaf tissues can still accumulate carotenoids in white-fleshed cultivars, which have lost the functional EjPSY2A. EjPSY3 mRNA abundance was ~1000-fold less than that of other PSY mRNAs in all tissues examined. In addition, neither the normal sized transcript nor two alternatively spliced forms, EjPSY3α in LYQ and EjPSY3β in BS cultivars, encoded functional enzymes, and it is concluded that EjPSY3 plays no role in carotenoid accumulation. In addition, it was noted that recruitment of PSY genes for expression in specific tissues of different plants has occurred independently of gene structure and evolutionary origin.
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