Central role of FaGAMYB in the transition of the strawberry receptacle from development to ripening

© 2015 The Authors. New Phytologist © 2015 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 208(2015), 2 vom: 15. Okt., Seite 482-96
1. Verfasser: Vallarino, José G (VerfasserIn)
Weitere Verfasser: Osorio, Sonia, Bombarely, Aureliano, Casañal, Ana, Cruz-Rus, Eduardo, Sánchez-Sevilla, José F, Amaya, Iraida, Giavalisco, Patrick, Fernie, Alisdair R, Botella, Miguel A, Valpuesta, Victoriano
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't ABA FaGAMYB Fragaria × ananassa GA fruit ripening strawberry receptacle sucrose Gibberellins mehr... Plant Proteins Abscisic Acid 72S9A8J5GW
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520 |a The receptacle of the strawberry (Fragaria × ananassa) fruit accounts for the main properties of the ripe fruit for human consumption. As it ripens, it undergoes changes similar to other fruits in sugar : acid ratio, volatile production and cell wall softening. However, the main regulators of this process have not yet been reported. The white stage marks the initiation of the ripening process, and we had previously reported a peak of expression for a FaGAMYB gene. Transient silencing of FaGAMYB using RNAi and further determination of changes in global gene expression by RNAseq, and composition of primary and secondary metabolites have been used to investigate the role played by this gene during the development of the receptacle. Down-regulation of FaGAMYB caused an arrest in the ripening of the receptacle and inhibited colour formation. Consistent with this, several transcription factors associated with the regulation of flavonoid biosynthetic pathway showed altered expression. FaGAMYB silencing also caused a reduction of ABA biosynthesis and sucrose content. Interestingly, exogenous ABA application to the RNAI-transformed receptacle reversed most defects caused by FaGAMYB down-regulation. The study assigns a key regulatory role to FaGAMYB in the initiation of strawberry receptacle ripening and acting upstream of the known regulator ABA 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a ABA 
650 4 |a FaGAMYB 
650 4 |a Fragaria × ananassa 
650 4 |a GA 
650 4 |a fruit ripening 
650 4 |a strawberry receptacle 
650 4 |a sucrose 
650 7 |a Gibberellins  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a Abscisic Acid  |2 NLM 
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700 1 |a Osorio, Sonia  |e verfasserin  |4 aut 
700 1 |a Bombarely, Aureliano  |e verfasserin  |4 aut 
700 1 |a Casañal, Ana  |e verfasserin  |4 aut 
700 1 |a Cruz-Rus, Eduardo  |e verfasserin  |4 aut 
700 1 |a Sánchez-Sevilla, José F  |e verfasserin  |4 aut 
700 1 |a Amaya, Iraida  |e verfasserin  |4 aut 
700 1 |a Giavalisco, Patrick  |e verfasserin  |4 aut 
700 1 |a Fernie, Alisdair R  |e verfasserin  |4 aut 
700 1 |a Botella, Miguel A  |e verfasserin  |4 aut 
700 1 |a Valpuesta, Victoriano  |e verfasserin  |4 aut 
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