Auxin and phyllotaxis

Trends Plant Sci. 2001 May;6(5):187-9. doi: 10.1016/s1360-1385(01)01894-5.


Our understanding of phyllotaxis is still largely based on surgical and pharmacological experiments carried out before 1970. Recent experiments implicate the plant hormone auxin in the regulation of phyllotaxis. A recent paper shows how the polar auxin transport mutant, pin1-1, which fails to make flowers, affects the expression of well known meristem genes. This work opens the door for the genetic analysis of phyllotaxis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biological Transport
  • Gene Expression Regulation, Developmental
  • Gene Expression Regulation, Plant
  • Genes, Plant
  • Indoleacetic Acids / chemistry
  • Indoleacetic Acids / genetics
  • Indoleacetic Acids / physiology*
  • Models, Biological
  • Plant Development
  • Plant Physiological Phenomena*
  • Plant Proteins / genetics
  • Plant Proteins / physiology
  • Plants / anatomy & histology


  • Indoleacetic Acids
  • Plant Proteins