Local auxin biosynthesis regulation by PLETHORA transcription factors controls phyllotaxis in Arabidopsis.

V. Pinon, K. Prasad, S.P. Grigg, G.F. Sanchez Perez, B. Scheres

Research output: Contribution to journalArticleAcademicpeer-review

107 Citations (Scopus)

Abstract

Lateral organ distribution at the shoot apical meristem defines specific and robust phyllotaxis patterns that have intrigued biologists and mathematicians for centuries. In silico studies have revealed that this self-organizing process can be recapitulated by modeling the polar transport of the phytohormone auxin. Phyllotactic patterns change between species and developmental stages, but the processes behind these variations have remained unknown. Here we use regional complementation experiments to reveal that phyllotactic switches in Arabidopsis shoots can be mediated by PLETHORA-dependent control of local auxin biosynthesis.
Original languageEnglish
Pages (from-to)1107-1112
JournalProceedings of the National Academy of Sciences of the United States of America
Volume110
Issue number3
DOIs
Publication statusPublished - 2013

Keywords

  • shoot apical meristem
  • stem-cell fate
  • signaling network
  • homeobox gene
  • transport
  • growth
  • maize
  • thaliana
  • apex
  • leaf

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