Tomato R2R3-MYB Proteins SlANT1 and SlAN2: Same Protein Activity, Different Roles.

Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE

Original Publication: San Francisco, CA : Public Library of Science

Gene Expression Regulation, Plant*; Anthocyanins/*metabolism ; Solanum lycopersicum/*metabolism ; Plant Proteins/*metabolism ; Plants, Genetically Modified/*metabolism ; Transcription Factors/*metabolism; Cold Temperature ; Genotype ; Light ; Solanum lycopersicum/genetics ; Solanum lycopersicum/growth & development ; Phenotype ; Phylogeny ; Plant Proteins/genetics ; Plants, Genetically Modified/genetics ; Plants, Genetically Modified/growth & development ; Promoter Regions, Genetic/genetics ; RNA, Messenger/genetics ; Real-Time Polymerase Chain Reaction ; Reverse Transcriptase Polymerase Chain Reaction ; Transcription Factors/genetics

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.

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0 (Anthocyanins)
0 (Plant Proteins)
0 (RNA, Messenger)
0 (Transcription Factors)

Date Created: 20150827 Date Completed: 20160526 Latest Revision: 20240327

20240327

PMC4556288

10.1371/journal.pone.0136365

26308527