Signaling tip growth in plants

Curr Opin Plant Biol. 1998 Dec;1(6):525-30. doi: 10.1016/s1369-5266(98)80046-0.


Tip growth is an extreme form of polar growth modulated by both intrinsic and extrinsic spatial cues. Pollen tubes and root hairs have been used as model systems to investigate tip growth signaling in higher plants. Recent studies have focused on tip-localized Ca2+ gradients and Rho GTPases in pollen tubes and a series of mutants affecting root hair tip growth. These molecular and genetic markers will serve as stepping stones towards uncovering tip growth pathways in plants.

Publication types

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

MeSH terms

  • Calcium / metabolism
  • Cell Polarity
  • Cytoskeletal Proteins / metabolism
  • GTP Phosphohydrolases / metabolism
  • Mutation
  • Plant Cells
  • Plant Development*
  • Plants / enzymology
  • Plants / metabolism
  • Signal Transduction*


  • Cytoskeletal Proteins
  • GTP Phosphohydrolases
  • Calcium