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Plant Physiology 70:781-787 (1982)
© 1982 American Society of Plant Biologists

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Wound-Induced Resistance to Cellulase in Oat Leaves 1

Gordon T. Geballe2 and Arthur W. Galston

Department of Biology, Yale University, New Haven, Connecticut 06511

Peeling the epidermis induces the development of resistance to cellulolytic digestion in the mesophyll cell wals of the first leaf of 1- to 3-week-old oat seedlings (Avena sativa var. Victory). Development of resistance occurs between 3 and 11 hours after the abaxial epidermis is peeled from the blade, and is inhibited by actinomycin D (20 micrograms per milliliter) or cycloheximide (1 microgram per milliliter). Other methods of wounding (cutting with a razor blade, stabbing with a dissection needle or brushing with diatomaceous silica) also induce resistance in cells near the wounds. Peeling similarly induces resistance to the digestion of mesophyll cell walls by Cellulysin (Calbiochem) in pea, corn, wheat, and barley.

2 Present address: School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511; to whom correspondence should be addressed.

1 This work was submitted as partial fulfillment for the Ph.D. degree, Yale University.






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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1982 by the American Society of Plant Biologists