Tomato R2R3-MYB Proteins SlANT1 and SlAN2: Same Protein Activity, Different Roles.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26308527.
- Also identified by DOI 10.1371/journal.pone.0136365 and PMC identifier 4556288.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
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.
Medical subject headings
- Anthocyanins
- Gene Expression Regulation, Plant
- Solanum lycopersicum
- Plant Proteins
- Plants, Genetically Modified
- Transcription Factors