title: Tomato R2R3-MYB Proteins SlANT1 and SlAN2: Same Protein Activity, Different Roles.
abstract: Anthocyanins are water-soluble polyphenolic compounds with a high nutraceutical value. Despite the fact that cultivated tomato varieties do not accumulate anthocyanins in the fruit, the biosynthetic pathway can be activated in the vegetative organs by several environmental stimuli. Little is known about the molecular mechanisms regulating anthocyanin synthesis in tomato. Here, we carried out a molecular and functional characterization of two genes, SlAN2 and SlANT1, encoding two R2R3-MYB transcription factors. We show that both can induce ectopic anthocyanin synthesis in transgenic tomato lines, including the fruit. However, only SlAN2 acts as a positive regulator of anthocyanin synthesis in vegetative tissues under high light or low temperature conditions.
authors: PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.
authors: Claudia
authors: C
authors: Kiferle
authors: Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Center, Rotondella (MT), Italy.
authors: Elio
authors: E
authors: Fantini
authors: PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.
authors: Laura
authors: L
authors: Bassolino
authors: PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy; Swammerdam Institute of Life Sciences, University of Amsterdam, Graduate School Experimental Plant Sciences, Amsterdam, The Netherlands.
authors: Giovanni
authors: G
authors: Povero
authors: Swammerdam Institute of Life Sciences, University of Amsterdam, Graduate School Experimental Plant Sciences, Amsterdam, The Netherlands.
authors: Cornelis
authors: C
authors: Spelt
authors: PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.
authors: Sara
authors: S
authors: Buti
authors: Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Casaccia Research Center, Roma, Italy.
authors: Giovanni
authors: G
authors: Giuliano
authors: Swammerdam Institute of Life Sciences, University of Amsterdam, Graduate School Experimental Plant Sciences, Amsterdam, The Netherlands.
authors: Francesca
authors: F
authors: Quattrocchio
authors: Swammerdam Institute of Life Sciences, University of Amsterdam, Graduate School Experimental Plant Sciences, Amsterdam, The Netherlands.
authors: Ronald
authors: R
authors: Koes
authors: PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.
authors: Pierdomenico
authors: P
authors: Perata
authors: PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.
authors: Silvia
authors: S
authors: Gonzali
mesh_terms: D000872:Anthocyanins / Q000378:metabolism*; D003080:Cold Temperature; D018506:Gene Expression Regulation, Plant; D005838:Genotype; D008027:Light; D018551:Solanum lycopersicum / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D010641:Phenotype; D010802:Phylogeny; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D030821:Plants, Genetically Modified / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D011401:Promoter Regions, Genetic / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*
chemical_list: D000872:Anthocyanins; D010940:Plant Proteins; D012333:RNA, Messenger; D014157:Transcription Factors