Tomato R2R3-MYB proteins SlANT1 and SlAN2: Same protein activity, different roles

Claudia Kiferle, Elio Fantini, Laura Bassolino, Giovanni Povero, Cornelis Spelt, Sara Buti, Giovanni Giuliano, Francesca Quattrocchio, Ronald Koes, Pierdomenico Perata, Silvia Gonzali

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41 Citations (Scopus)


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.
Original languageEnglish
Article numbere0136365
Pages (from-to)-
JournalPLoS One
Issue number8
Publication statusPublished - 26 Aug 2015
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Kiferle, C., Fantini, E., Bassolino, L., Povero, G., Spelt, C., Buti, S., Giuliano, G., Quattrocchio, F., Koes, R., Perata, P., & Gonzali, S. (2015). Tomato R2R3-MYB proteins SlANT1 and SlAN2: Same protein activity, different roles. PLoS One, 10(8), -. [e0136365].