ArticleScientific reports2017
Phytochromobilin deficiency impairs sugar metabolism through the regulation of cytokinin and auxin signaling in tomato fruits.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 48 citations in OpenAlex.
- Far-red perception by vegetative organs and not fruits drives fruit growth responses in tomato plants.Plant physiology · 2026Article
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- Identification and Characterization of ABCG15-A Gene Required for Exocarp Color Differentiation in Pear.Genes · 2023Review
- SlBBX28 positively regulates plant growth and flower number in an auxin-mediated manner in tomato.Plant molecular biology · 2022Article
- Fine Mapping and Functional Analysis of Major Regulatory Genes of Soluble Solids Content in Wax Gourd (International journal of molecular sciences · 2022Article
- TheInternational journal of molecular sciences · 2021Article
- Hormonal impact on photosynthesis and photoprotection in plants.Plant physiology · 2021Review
- Carotenoid Biosynthesis and Plastid Development in Plants: The Role of Light.International journal of molecular sciences · 2021Review
- Light and ripening-regulated BBX protein-encoding genes in Solanum lycopersicum.Scientific reports · 2020Article
- A de novo transcriptome analysis revealed that photomorphogenic genes are required for carotenoid synthesis in the dark-grown carrot taproot.Molecular genetics and genomics : MGG · 2020Article
- Beyond the limits of photoperception: constitutively active PHYTOCHROME B2 overexpression as a means of improving fruit nutritional quality in tomato.Plant biotechnology journal · 2020Article
- Phytochrome-Dependent Temperature Perception Modulates Isoprenoid Metabolism.Plant physiology · 2020Article
- Differential expression of microRNAs in tomato leaves treated with different light qualities.BMC genomics · 2020Article
- The Molecular Regulation of Carbon Sink Strength in Grapevine (Frontiers in plant science · 2020Review
- Downregulation of PHYTOCHROME-INTERACTING FACTOR 4 Influences Plant Development and Fruit Production.Plant physiology · 2019Article
- Integrative analysis of postharvest chilling injury in cherry tomato fruit reveals contrapuntal spatio-temporal responses to ripening and cold stress.Scientific reports · 2019Article
- Solanum lycopersicum GOLDEN 2-LIKE 2 transcription factor affects fruit quality in a light- and auxin-dependent manner.PloS one · 2019Article
- Fruit-localized phytochromes regulate plastid biogenesis, starch synthesis, and carotenoid metabolism in tomato.Journal of experimental botany · 2018Article
- Light, Ethylene and Auxin Signaling Interaction Regulates Carotenoid Biosynthesis During Tomato Fruit Ripening.Frontiers in plant science · 2018Article
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Phytochomes and plant hormones have been emerging as important regulators of fleshy fruit biology and quality traits; however, the relevance of phytochrome-hormonal signaling crosstalk in controlling fruit development and metabolism remains elusive. Here, we show that the deficiency in phytochrome chromophore phytochromobilin (PΦB) biosynthesis inhibits sugar accumulation in tomato (Solanum lycopersicum) fruits by transcriptionally downregulating sink- and starch biosynthesis-related enzymes, such as cell-wall invertases, sucrose transporters and ADP-glucose pyrophosphorylases. PΦB deficiency was also shown to repress fruit chloroplast biogenesis, which implicates more limited production of photoassimilates via fruit photosynthesis. Genetic and physiological data revealed the involvement of auxins and cytokinins in mediating the negative impact of PΦB deficiency on fruit sink strength and chloroplast formation. PΦB deficiency was shown to transcriptionally repress type-A TOMATO RESPONSE REGULATORs and AUXIN RESPONSE FACTORs both in pericarp and columella, suggesting active phytochrome-hormonal signaling crosstalk in these tissues. Data also revealed that PΦB deficiency influences fruit ripening by delaying the climacteric rise in ethylene production and signaling. Altogether, the data uncover the impact of phytochromobilin deficiency in fine-tuning sugar metabolism, chloroplast formation and the timing of fruit ripening and also reveal a link between auxins, cytokinins and phytochromes in regulating sugar import and accumulation in fruits.
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