Permeability of Apricot Leaf Cuticle

Abstract

Altlhoughl cutimize(d tissue in some forlmi is the first harrier to the entrv of chemicals into plants, dlirect measurements of the permeability properties of cuticular membranes are limited aandl qualitative (1, 5 ). Froml clirect miieasuremleints oin isolated cuiticle Skoss (9 ) has reported that Eniglish ivy leaf cuticle is relativelv illmpermleable to w ater, aandl that lemloni leaf cuticle is impermeable to the sodiunm salt of 2,4-dichlorophenoxyacetic acid, to the ammiioolniunm salt of dIinitro-o-sec-but lplleinol. andl to silver and chloriOle ionls. Similarly Orgell (7 )

The Response of Ornamental Plants to Saline Irrigation Water

“…On the other hand, the halophyte L. pectinatum was more tolerant, directly excreting salts from its leaves (Alarcón et al, 1999). Foliar damage is directly linked to foliar absorption, with increased leaf ion penetration with increasing temperature (Darlington & Cirulis, 1963).…”

Penetration of Iron and Some Organic Substances Through Isolated Cuticular Membranes

“…Increasingly greater attention has been directed toward the importance of this common barrier to foliar entry of solutes. Although the morphology, physiology and biochemistry of plant cuticles have been discussed ( 1,4,5,16), the mode of entry of nutrient ions and other chemicals through the cuticles is not vet understood. Cuticular membranes have been isolated enzymically from ripe tomato fruits and onion leaves and their permeability, surface binding an-d ion exchange properties with respect to rubidium, calcium and urea have been studied (23,24,25).…”

RESPONSES OF LEAVES OF PHASEOLUS VULGARIS L. TO SIMULATED ACIDIC RAIN

“…Many studies have been performed to measure or estimate the rate or degree of ion penetration in plant leaves, mostly in cases of individual elemental deficiencies (Darlington and Cirulis, 1963;Page, Martin and Ganje, 1963;Jyung andWittwer, 1964;Norrisand Bukovac, 1968;Levi, 1970). Other researchers have measured the rate of penetration of organic herbicides, fungicides and msecticides in order to alter or protect agricultural plants (Goodman and Addy, 1962;Biswas, 1964).…”