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

J. Braam, M. L. Sistrunk, D. H. Polisensky, W. Xu, M. M. Purugganan, D. M. Antosiewicz, P. Campbell, K. A. Johnson

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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.
Original languageUndefined
Pages (from-to)909-16
JournalPhysiologia Plantarum
Issue number4
StatePublished - 1996


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

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