Life in a changing world: TCH gene regulation of expression and responses to environmental signals

Physiol Plant. 1996 Dec;98(4):909-16.


The Arabidopsis TCH genes were discovered as a consequence of their marked upregulation of expression in response to seemingly innocuous stimuli such as touch. Further analyses have indicated that these genes are upregulated by a variety of diverse stimuli. Understanding the mechanism(s) and factors that control TCH gene regulation will shed light on the signaling pathways that enable plants to respond to changing environmental conditions. The TCH proteins include calmodulin, calmodulin-related proteins and a xyloglucan endotransglycosylase. Expression analyses and localization of protein accumulation indicate that the potential sites of TCH protein function include expanding cells and tissues under mechanical strain. We hypothesize that the TCH proteins may collaborate in cell wall biogenesis.

Publication types

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

MeSH terms

  • Arabidopsis / enzymology
  • Arabidopsis / genetics*
  • Arabidopsis / physiology
  • Arabidopsis Proteins*
  • Calcium / physiology*
  • Calcium-Binding Proteins / genetics
  • Calcium-Binding Proteins / physiology
  • Calmodulin / physiology
  • Gene Expression Regulation, Plant*
  • Genes, Plant*
  • Glycosyltransferases / genetics
  • Glycosyltransferases / metabolism
  • Plant Proteins / genetics
  • Plant Proteins / physiology
  • Second Messenger Systems / genetics
  • Second Messenger Systems / physiology
  • Signal Transduction / genetics
  • Signal Transduction / physiology*


  • Arabidopsis Proteins
  • Calcium-Binding Proteins
  • Calmodulin
  • Plant Proteins
  • TCH protein, Arabidopsis
  • Glycosyltransferases
  • xyloglucan endotransglycosylase
  • Calcium