Abstract
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.
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