Plant Physiol. Drug Metab Dispos
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Plant Physiology 55:1016-1017 (1975)
© 1975 American Society of Plant Biologists

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Articles

Effect of Gibberellic Acid on Crown Gall Tumor Induction in Aging Primary Pinto Bean Leaves 1

Vinod K. Anand, Chris Bauer and Gary T. Heberlein

a Department of Biology, University of Missouri, St. Louis, Missouri 63121

Gibberellic acid was tested for its effect on tumor induction by Agrobacterium tumefaciens in primary pinto bean (Phaseolus vulgaris) leaves in various stages of development. The hormone was found to promote tumor induction in partially aged leaves but did not effect tumor induction in very young leaves or in fully matured leaves. It is suggested that the natural loss of susceptibility to tumor induction in maturing pinto bean leaves is associated with a concomitant loss of endogenous gibberellins and/or a sensitivity to gibberellins.

1 This investigation was supported by Public Health Service Research Grant CA 14516 from the National Cancer Institute awarded to G.T.H.






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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1975 by the American Society of Plant Biologists