The Specialized Roles in Carotenogenesis and Apocarotenogenesis of the Phytoene Synthase Gene Family in Saffron [PDF]
Frontiers in Plant Science, 2019 Crocus sativus stigmas are the main source of crocins, which are glucosylated apocarotenoids derived from zeaxanthin cleavage that give saffron its red color. Phytoene synthase (PSY) mediates the first committed step in carotenoid biosynthesis in plants.
FRANCISCO A Macias +2 more
exaly +4 more sources
Characterization and functional analysis of phytoene synthase gene family in tobacco [PDF]
BMC Plant Biology, 2021 Background Carotenoids play important roles in photosynthesis, hormone signaling, and secondary metabolism. Phytoene synthase (PSY) catalyzes the first step of the carotenoid biosynthetic pathway.
Zhaojun Wang +8 more
doaj +2 more sources
Perturbations in the Carotenoid Biosynthesis Pathway in Tomato Fruit Reactivate the Leaf-Specific Phytoene Synthase 2 [PDF]
Frontiers in Plant Science, 2022 The accumulation of the red carotenoid pigment lycopene in tomato (Solanum lycopersicum) fruit is achieved by increased carotenoid synthesis during ripening.
Uri Karniel +3 more
doaj +2 more sources
Molecular evolution and diversification of phytoene synthase (PSY) gene family [PDF]
Genetics and Molecular Biology, 2022 Phytoene synthase (PSY) is a crucial enzyme required for carotenoid biosynthesis, encoded by a gene family conserved in carotenoid-producing organisms. This gene family is diversified in angiosperms through distinct duplication events.
Marcia Pagno Lisboa +3 more
doaj +2 more sources
Diversification of tobacco phytoene-synthase-encoding genes coordinates carotenoid flux, strigolactone biosynthesis, and cold responses [PDF]
Frontiers in Plant SciencePhytoene synthase plays important roles in the development, metabolism, and various stress tolerance in plants. In the current study, a total of five tobacco phytoene synthase members were identified and systemically analyzed from the latest genome ...
Xiaoxu Li +18 more
doaj +2 more sources
Orange protein, phytoene synthase regulator, has protein disulfide reductase activity [PDF]
Plant Signaling & Behavior, 2022 Orange protein (OR) is known to interact with phytoene synthase (PSY) that commits the first step in carotenoid biosynthesis, and functions as a major post-transcriptional regulator on PSY. We here tried to reveal enzymatic characteristics of OR, that is,
Yuto Oogo +4 more
doaj +2 more sources
Functional Characterization of the First Bona Fide Phytoene Synthase in Red Algae from Pyropia yezoensis [PDF]
Marine DrugsThe formation of phytoene by condensing two geranylgeranyl diphosphate molecules catalyzed by phytoene synthase (PSY) is the first committed and rate-limiting step in carotenoid biosynthesis, which has been extensively investigated in bacteria, land ...
Cheng-Ling Li +6 more
doaj +2 more sources
Comparative Structural Modeling Suggests Distinct Signatures of Conformational Plasticity and Surface Physicochemistry in Phytoene Synthase and Dehydrosqualene Synthase [PDF]
MoleculesCarotenoids are essential metabolites involved in photosynthesis, cellular protection, pigmentation, and antioxidant activities. Phytoene synthase (PSY/CrtB) utilizes C20 substrates in carotenoid biosynthesis, whereas its structural homolog ...
Ade Rizqi Ridwan Firdaus +4 more
doaj +2 more sources
Phytoene Synthase: The Key Rate-Limiting Enzyme of Carotenoid Biosynthesis in Plants [PDF]
Frontiers in Plant Science, 2022 Phytoene synthase (PSY) catalyzes the first committed step in the carotenoid biosynthesis pathway and is a major rate-limiting enzyme of carotenogenesis.
Xuesong Zhou +12 more
doaj +2 more sources
The Carrot Phytoene Synthase 2 (DcPSY2) Promotes Salt Stress Tolerance through a Positive Regulation of Abscisic Acid and Abiotic-Related Genes in Nicotiana tabacum [PDF]
Plants, 2023 Background: Carotenoids, which are secondary metabolites derived from isoprenoids, play a crucial role in photo-protection and photosynthesis, and act as precursors for abscisic acid, a hormone that plays a significant role in plant abiotic stress ...
Orlando Acevedo +2 more
doaj +2 more sources