Abstract
Antisera were raised to a 70-kD (kilodalton) soybean (Glycine max) protein encoded by a 2,4-dichlorophenoxyacetic acid (2,4-D) inducible mRNA, GH3. These antisera have been used to probe protein blots to study the kinetics and specificity of the GH3 induction response as well as the species specificity and intracellular location of the protein. Detectable levels of the GH3 protein are induced by 2,4-D within 2 h in elongating hypocotyl sections, root sections, and etiolated plumules, and within 30–60 min in soybean suspension cells. Synthesis of the GH3 protein is induced by a variety of auxins. Other plant hormones such as gibberellic acid, cytokinin and ethylene added with or whithout 2,4-D do not alter the level of GH3 protein induction. The GH3 protein is found only in the S100 fraction and is not associated with the nucleus or cell wall. This antiserum also reacts with a 2,4-D-inducible 70-kD protein in other dicots.
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Wright, R.M., Hagen, G. & Guilfoyle, T. An auxin-induced polypeptide in dicotyledonous plants. Plant Mol Biol 9, 625–634 (1987). https://doi.org/10.1007/BF00020538
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DOI: https://doi.org/10.1007/BF00020538