ArticleJournal of experimental botany2016
Increased Nicotiana tabacum fitness through positive regulation of carotenoid, gibberellin and chlorophyll pathways promoted by Daucus carota lycopene β-cyclase (Dclcyb1) expression.
Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 62 citations in OpenAlex.
- DcLcyB1 and DcLcyB2, two lycopene β-cyclases with partial functional overlap modulate carotene profiles in carrot roots via distinct catalytic properties.Molecular horticulture · 2026Article
- The interaction of gibberellin and melatonin promotes tobacco leaf growth and balances chemical components content in upper leaves.Frontiers in plant science · 2026Article
- Carotenoid Biofortification in Field-Grown Tomato Fruits by Early Inoculation with Arbuscular Mycorrhizal Fungi.Journal of agricultural and food chemistry · 2025Article
- LYCOPENE β-CYCLASE overexpression improves growth, modulates hormone content, and affects rhizospheric interactions in tobacco and tomato roots.Plant cell reports · 2025Article
- β-Carotene alleviates substrate inhibition caused by asymmetric cooperativity.Nature communications · 2025Article
- Exploring the Potential of Carotenoids in Obesity Management: A Comprehensive Overview.Recent advances in food, nutrition & agriculture · 2025Review
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- Comparative Transcriptome Combined with Morphophysiological Analyses Revealed Carotenoid Biosynthesis for Differential Chilling Tolerance in Two Contrasting Rice (Oryza sativa L.) Genotypes.Rice (New York, N.Y.) · 2023Article
- PutativePlants (Basel, Switzerland) · 2023Article
- The Carrot Phytoene Synthase 2 (Plants (Basel, Switzerland) · 2023Article
- Editorial: Illuminating carotenoid synthesis and plastid transition in plants, volume II.Frontiers in plant science · 2023Article
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- Carrot DcALFIN4 and DcALFIN7 Transcription Factors Boost Carotenoid Levels and Participate Differentially in Salt Stress Tolerance When Expressed inInternational journal of molecular sciences · 2022Article
- Origin, evolution, breeding, and omics of Apiaceae: a family of vegetables and medicinal plants.Horticulture research · 2022Article
- Carotenoid metabolism: New insights and synthetic approaches.Frontiers in plant science · 2022Review
- Article
- Lycopene β-cyclase expression influences plant physiology, development, and metabolism in tobacco plants.Journal of experimental botany · 2021Article
- Article
- Characterization ofFrontiers in plant science · 2021Article
Corrections and comments
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Authors and funding
7 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Carotenoids, chlorophylls and gibberellins are derived from the common precursor geranylgeranyl diphosphate (GGPP). One of the enzymes in carotenoid biosynthesis is lycopene β-cyclase (LCYB) that catalyzes the conversion of lycopene into β-carotene. In carrot, Dclcyb1 is essential for carotenoid synthesis in the whole plant. Here we show that when expressed in tobacco, increments in total carotenoids, β-carotene and chlorophyll levels occur. Furthermore, photosynthetic efficiency is enhanced in transgenic lines. Interestingly, and contrary to previous observations where overexpression of a carotenogenic gene resulted in the inhibition of the synthesis of gibberellins, we found raised levels of active GA4 and the concommitant increases in plant height, leaf size and whole plant biomass, as well as an early flowering phenotype. Moreover, a significant increase in the expression of the key carotenogenic genes, Ntpsy1, Ntpsy2 and Ntlcyb, as well as those involved in the synthesis of chlorophyll (Ntchl), gibberellin (Ntga20ox, Ntcps and Ntks) and isoprenoid precursors (Ntdxs2 and Ntggpps) was observed. These results indicate that the expression of Dclcyb1 induces a positive feedback affecting the expression of isoprenoid gene precursors and genes involved in carotenoid, gibberellin and chlorophyll pathways leading to an enhancement in fitness measured as biomass, photosynthetic efficiency and carotenoid/chlorophyll composition.
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