Abstract
THE necessity of auxin for the transformation of incipient tumour cells to fully altered tumour cells has been demonstrated by Braun and Laskaris1 and by Klein and Link2. Both groups demonstrated that decapitated plants inoculated with an avirulent strain of Agrobacterium tumefaciens would develop crown gall tumours if their cut surfaces were smeared with a lanolin paste containing a plant growth hormone (indole-3-acetic acid), but not if these cut surfaces were smeared with lanolin alone. The action of indole-3-acetic acid was demonstrated to be on the tissues and not on the bacteria, as the latter did not become virulent as a result of exposure to indole-3-acetic acid.
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References
Braun, A. C., and Laskaris, T., Proc. U.S. Nat. Acad. Sci., 28, 468 (1942).
Klein, R. M., and Link, G. K. K., Proc. U.S. Nat. Acad. Sci., 38, 1066 (1952).
Locke, S. B., Riker, A. J., and Duggar, B. M., J. Agric. Res., 59, 519 (1939).
Lipetz, J., and Galston, A. W., Amer. J. Bot., 46, 193 (1959).
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LIPETZ, J. A Possible Role of Indoleacetic Acid Oxidase in Crown Gall Tumour Induction. Nature 184, 1076–1077 (1959). https://doi.org/10.1038/1841076b0
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DOI: https://doi.org/10.1038/1841076b0
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