Arabidopsis regeneration from multiple tissues occurs via a root development pathway

Dev Cell. 2010 Mar 16;18(3):463-71. doi: 10.1016/j.devcel.2010.02.004.


Unlike most animal cells, plant cells can easily regenerate new tissues from a wide variety of organs when properly cultured. The common elements that provide varied plant cells with their remarkable regeneration ability are still largely unknown. Here we describe the initial process of Arabidopsis in vitro regeneration, where a pluripotent cell mass termed callus is induced. We demonstrate that callus resembles the tip of a root meristem, even if it is derived from aerial organs such as petals, which clearly shows that callus formation is not a simple reprogramming process backward to an undifferentiated state as widely believed. Furthermore, callus formation in roots, cotyledons, and petals is blocked in mutant plants incapable of lateral root initiation. It thus appears that the ectopic activation of a lateral root development program is a common mechanism in callus formation from multiple organs.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Arabidopsis / cytology
  • Arabidopsis / genetics
  • Arabidopsis / growth & development*
  • Arabidopsis / physiology*
  • Base Sequence
  • Cotyledon / growth & development
  • Cotyledon / physiology
  • Cytokinins / pharmacology
  • DNA, Plant / genetics
  • Flowers / growth & development
  • Flowers / physiology
  • Gene Expression Regulation, Developmental
  • Gene Expression Regulation, Plant
  • Indoleacetic Acids / pharmacology
  • Meristem / cytology
  • Meristem / growth & development
  • Meristem / physiology
  • Mutation
  • Plant Roots / cytology
  • Plant Roots / growth & development
  • Plant Roots / physiology
  • Plants, Genetically Modified
  • Regeneration / drug effects
  • Regeneration / physiology


  • Cytokinins
  • DNA, Plant
  • Indoleacetic Acids

Associated data

  • GEO/GSE19863