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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/ery145
|2 doi
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|a pubmed24n0951.xml
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|a (NLM)29912373
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Ernesto Bianchetti, Ricardo
|e verfasserin
|4 aut
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| 245 |
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|a Fruit-localized phytochromes regulate plastid biogenesis, starch synthesis, and carotenoid metabolism in tomato
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|c 2018
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 17.10.2019
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|a Date Revised 07.12.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a Light signaling has long been reported to influence fruit biology, although the regulatory impact of fruit-localized photoreceptors on fruit development and metabolism remains unclear. Studies performed in phytochrome (PHY)-deficient tomato (Solanum lycopersicum) mutants suggest that SlPHYA, SlPHYB2, and to a lesser extent SlPHYB1 influence fruit development and ripening. By employing fruit-specific RNAi-mediated silencing of SlPHY genes, we demonstrated that fruit-localized SlPHYA and SlPHYB2 play contrasting roles in regulating plastid biogenesis and maturation in tomato. Our data revealed that fruit-localized SlPHYA, rather than SlPHYB1 or SlPHYB2, positively influences tomato plastid differentiation and division machinery via changes in both light and cytokinin signaling-related gene expression. Fruit-localized SlPHYA and SlPHYB2 were also shown to modulate sugar metabolism in early developing fruits via overlapping, yet distinct, mechanisms involving the co-ordinated transcriptional regulation of genes related to sink strength and starch biosynthesis. Fruit-specific SlPHY silencing also drastically altered the transcriptional profile of genes encoding light-repressor proteins and carotenoid-biosynthesis regulators, leading to reduced carotenoid biosynthesis during fruit ripening. Together, our data reveal the existence of an intricate PHY-hormonal interplay during fruit development and ripening, and provide conclusive evidence on the regulation of tomato quality by fruit-localized phytochromes
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cytokinins
|2 NLM
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| 650 |
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|a Indoleacetic Acids
|2 NLM
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| 650 |
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|a Plant Growth Regulators
|2 NLM
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| 650 |
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|a Phytochrome
|2 NLM
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| 650 |
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|a 11121-56-5
|2 NLM
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| 650 |
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|a Carotenoids
|2 NLM
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| 650 |
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|a 36-88-4
|2 NLM
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| 650 |
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|a Starch
|2 NLM
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| 650 |
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|a 9005-25-8
|2 NLM
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| 700 |
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|a Silvestre Lira, Bruno
|e verfasserin
|4 aut
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| 700 |
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|a Santos Monteiro, Scarlet
|e verfasserin
|4 aut
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| 700 |
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|a Demarco, Diego
|e verfasserin
|4 aut
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| 700 |
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|a Purgatto, Eduardo
|e verfasserin
|4 aut
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| 700 |
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|a Rothan, Christophe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rossi, Magdalena
|e verfasserin
|4 aut
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| 700 |
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|a Freschi, Luciano
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 69(2018), 15 vom: 27. Juni, Seite 3573-3586
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:69
|g year:2018
|g number:15
|g day:27
|g month:06
|g pages:3573-3586
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/ery145
|3 Volltext
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