ArticlePlanta2010
Characterization of phytoene synthases from cassava and their involvement in abiotic stress-mediated responses.
Article in Planta, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed, 84 citations in OpenAlex.
- Overexpressing CsPSY1 Gene of Tea Plant, Encoding a Phytoene Synthase, Improves α-Carotene and β-Carotene Contents in Carrot.Molecular biotechnology · 2024Article
- Overexpression of Abscisic Acid Biosynthesis GenePlants (Basel, Switzerland) · 2024Article
- Carotenoid composition and sequestration in cassava (Manihot esculentum Crantz) roots.PloS one · 2024Article
- Regulation of Carotenoid Biosynthesis and Degradation in Lettuce (International journal of molecular sciences · 2023Article
- The Carrot Phytoene Synthase 2 (Plants (Basel, Switzerland) · 2023Article
- Review
- Perturbations in the Carotenoid Biosynthesis Pathway in Tomato Fruit Reactivate the Leaf-Specific Phytoene Synthase 2.Frontiers in plant science · 2022Article
- Characterization of cassava ORANGE proteins and their capability to increase provitamin A carotenoids accumulation.PloS one · 2022Article
- Genotypic variation inPhysiology and molecular biology of plants : an international journal of functional plant biology · 2021Article
- Characterization and functional analysis of phytoene synthase gene family in tobacco.BMC plant biology · 2021Article
- Differential Regulation of Phytoene Synthase PSY1 During Fruit Carotenogenesis in Cultivated and Wild Tomato Species (Plants (Basel, Switzerland) · 2020Article
- Transcriptional Regulation of Carotenoid Biosynthesis in Plants: So Many Regulators, So Little Consensus.Frontiers in plant science · 2019Review
- Elevated carotenoids in staple crops: The biosynthesis, challenges and measures for target delivery.Journal, genetic engineering & biotechnology · 2018Review
- Unraveling the induction of phytoene synthase 2 expression by salt stress and abscisic acid in Daucus carota.Journal of experimental botany · 2018Article
- Tomato (Solanum lycopersicum) SlIPT4, encoding an isopentenyltransferase, is involved in leaf senescence and lycopene biosynthesis during fruit ripening.BMC plant biology · 2018Article
- Strigolactone Levels in Dicot Roots Are Determined by an Ancestral Symbiosis-Regulated Clade of theFrontiers in plant science · 2018Article
- Medically important carotenoids fromSaudi journal of biological sciences · 2017Article
- Molecular analysis of the expression of a crtB transgene and the endogenous psy2-yTransgenic research · 2017Article
- Regulation of Banana Phytoene Synthase (MaPSY) Expression, Characterization and Their Modulation under Various Abiotic Stress Conditions.Frontiers in plant science · 2017Article
- Carotenogenesis Is Regulated by 5'UTR-Mediated Translation of Phytoene Synthase Splice Variants.Plant physiology · 2016Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Abiotic stress stimuli induce the increased synthesis of abscisic acid (ABA), which is generated through the cleavage of xanthophyll precursors. To cope with the increased xanthophyll demand, maize and rice contain a third stress-induced gene copy, coding for phytoene synthase (PSY), which catalyzes the first carotenoid-specific reaction in the pathway. To investigate whether this specific response extends beyond the Poaceae, cassava was analyzed, an important tropical crop known for its drought tolerance. We also found three PSY genes in cassava, one of which (MePSY3) forms a separate branch with the stress-specific Poaceae homologs. However, MePSY3 transcripts were virtually absent in all tissues investigated and did not change upon abiotic stress treatment. In contrast, the two remaining PSY genes contributed differentially to carotenoid biosynthesis in leaves, roots, and flower organs and responded towards drought and salt-stress conditions. Detailed analyses of PSY and 9-cis-epoxycarotenoid cleavage dioxygenase (MeNCED) expression and resulting ABA levels revealed MePSY1 as the main stress-responsive paralog. In the presence of high carotenoid levels in leaves, MePSY1 appeared to support, but not to be rate-limiting for ABA formation; MeNCED represented the main driver. The inverse situation was found in roots where carotenoid levels are low. Moreover, ABA formation and the relative induction kinetics showed discrimination between drought and salt stress. Compared to rice as a drought-intolerant species, the drought response in cassava followed a different kinetic regime. The difference is thought to represent a component contributing to the large differences in the adaptation towards water supply.
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