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    Cell. 1990 Feb 9;60(3):357-64.

    Rain-, wind-, and touch-induced expression of calmodulin and calmodulin-related genes in Arabidopsis.

    Braam J, Davis RW.

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    Department of Biochemistry, Beckman Center, Stanford University, California 94305.

    Abstract

    In response to water spray, subirrigation, wind, touch, wounding, or darkness, Arabidopsis regulates the expression of at least four touch-induced (TCH) genes. Ten to thirty minutes after stimulation, mRNA levels increase up to 100-fold. Arabidopsis plants stimulated by touch develop shorter petioles and bolts. This developmental response is known as thigmomorphogenesis. TCH 1 cDNA encodes the putative Arabidopsis calmodulin differing in one amino acid from wheat calmodulin. Sequenced regions of TCH 2 and TCH 3 contain 44% and 70% amino acid identities to calmodulin, respectively. The regulation of this calmodulin-related gene family in Arabidopsis suggests that calcium ions and calmodulin are involved in transduction of signals from the environment, enabling plants to sense and respond to environmental changes.

    PMID:
    2302732
    [PubMed - indexed for MEDLINE]

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