title: Life in a changing world:  TCH gene regulation of expression and responses to environmental signals.
abstract: 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.
authors.affiliation: Dept of Biochemistry and Cell Biology, Rice Univ., Houston, TX 77055-1892, USA.  braam@bioc.rice.edu
authors.forename: J
authors.initials: J
authors.lastname: Braam
authors.forename: M L
authors.initials: ML
authors.lastname: Sistrunk
authors.forename: D H
authors.initials: DH
authors.lastname: Polisensky
authors.forename: W
authors.initials: W
authors.lastname: Xu
authors.forename: M M
authors.initials: MM
authors.lastname: Purugganan
authors.forename: D M
authors.initials: DM
authors.lastname: Antosiewicz
authors.forename: P
authors.initials: P
authors.lastname: Campbell
authors.forename: K A
authors.initials: KA
authors.lastname: Johnson
mesh_terms: D017360:Arabidopsis / Q000201:enzymology / Q000235:genetics / Q000502:physiology; D029681:Arabidopsis Proteins; D002118:Calcium / Q000502:physiology; D002135:Calcium-Binding Proteins / Q000235:genetics / Q000502:physiology; D002147:Calmodulin / Q000502:physiology; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D016695:Glycosyltransferases / Q000235:genetics / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics / Q000502:physiology; D015290:Second Messenger Systems / Q000235:genetics / Q000502:physiology; D015398:Signal Transduction / Q000235:genetics / Q000502:physiology
chemical_list: D029681:Arabidopsis Proteins; D002118:Calcium; D002135:Calcium-Binding Proteins; D002147:Calmodulin; D016695:Glycosyltransferases; D010940:Plant Proteins; C073693:xyloglucan endotransglycosylase; C572690:AT5G37780 protein, Arabidopsis