ArticlePlant physiology2023
Overlapping and specialized roles of tomato phytoene synthases in carotenoid and abscisic acid production.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed, 38 citations in OpenAlex.
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- Singlet Oxygen in Plants: Mechanistic Insights into Production, Oxidative Damage, and Stress-Response Signaling.Antioxidants (Basel, Switzerland) · 2026Review
- DcGATA22 serves as a transcription factor positively coordinating chlorophyll and carotenoid accumulation in carrot.Planta · 2026Article
- Metabolism and regulation of chlorophyll and carotenoids in tomato fruits.Horticulture research · 2026Article
- ORANGE: a tale of two pigments and two organelles.Plant cell reports · 2026Review
- Decoding Isoprenoid Transcript-Metabolite Interactions in Carotenoid Tomato Fruit Mutants Uncovers Novel Metabolic Cross-Links.International journal of molecular sciences · 2026Article
- Engineering carotenoid and steroidal glycoalkaloid depleted tomato fruit for heterologous production of high value terpenes.bioRxiv : the preprint server for biology · 2026Article
- Research progress on the regulatory mechanisms of the PSY promoter.Transgenic research · 2026Review
- Divergent Regulatory Effects of Jasmonic Acid on Tomato Lycopene Biosynthesis Under Light and Dark Conditions.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Silicon mitigates combined cadmium and microplastics toxicity in rice by regulating glyoxalase system, and phytochelatin-mediated cadmium detoxification.BMC plant biology · 2026Article
- Family alliances feeding the carotenoid pathway in tomato.Journal of experimental botany · 2025Review
- Physiological, biochemical, and transcriptomic analysis of castor (Ricinus communis L.) under foliar selenium treatment.BMC plant biology · 2025Article
- A shade-hyposensitive tomato line shows altered auxin homeostasis and higher fruit yield under high-density field conditions.The New phytologist · 2025Article
- Mechanistic Elucidation and Establishment of Drying Kinetic Models of Differential Metabolite Regulation inBiology · 2025Article
- Editing multiple genes in Physalis pubescens provides valuable lessons and implications for creating new germplasm and varieties of Physalis crops.Plant & cell physiology · 2025Article
- Proteome and Metabolome Analyses of Albino Bracts inPlants (Basel, Switzerland) · 2025Article
- Comparative Genomic Analysis of Two Monokaryons ofJournal of fungi (Basel, Switzerland) · 2025Article
- Circadian Regulation of Expression of Carotenoid Metabolism Genes (PSY2, LCYE, CrtRB1, and NCED1) in Leaves of Tomato Solanum lycopersicum L.Doklady. Biochemistry and biophysics · 2024Article
- Identification of Drought Stress-Responsive Genes in Rice by Random Walk with Multi-Restart Probability on MultiPlex Biological Networks.International journal of molecular sciences · 2024Article
- Intra-canopy LED lighting outperformed top LED lighting in improving tomato yield and expression of the genes responsible for lycopene, phytoene and vitamin C synthesis.Scientific reports · 2024Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
Abstract
Carotenoids are plastidial isoprenoids required for photoprotection and phytohormone production in all plants. In tomato (Solanum lycopersicum), carotenoids also provide color to flowers and ripe fruit. Phytoene synthase (PSY) catalyzes the first and main flux-controlling step of the carotenoid pathway. Three genes encoding PSY isoforms are present in tomato, PSY1 to PSY3. Mutants have shown that PSY1 is the isoform providing carotenoids for fruit pigmentation, but it is dispensable in photosynthetic tissues. No mutants are available for PSY2 or PSY3, but their expression profiles suggest a main role for PSY2 in leaves and PSY3 in roots. To further investigate isoform specialization with genetic tools, we created gene-edited lines defective in PSY1 and PSY2 in the MicroTom background. The albino phenotype of lines lacking both PSY1 and PSY2 confirmed that PSY3 does not contribute to carotenoid biosynthesis in shoot tissues. Our work further showed that carotenoid production in tomato shoots relies on both PSY1 and PSY2 but with different contributions in different tissues. PSY2 is the main isoform for carotenoid biosynthesis in leaf chloroplasts, but PSY1 is also important in response to high light. PSY2 also contributes to carotenoid production in flower petals and, to a lesser extent, fruit chromoplasts. Most interestingly, our results demonstrate that fruit growth is controlled by abscisic acid (ABA) specifically produced in the pericarp from PSY1-derived carotenoid precursors, whereas PSY2 is the main isoform associated with ABA synthesis in seeds and salt-stressed roots.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.