Effects of SO sub(2) and other air pollutants on the morphology of epicuticular waxes on needles of Pinus strobus) and Pinus banksiana

Exposure of elongating needles of Pinus strobus L. to SO sub(2) and other unidentified air pollutants delayed wax deposition in the epistomatal chambers. Following completion of wax deposition, the wax rodlets fused, forming platelike sheets. Needle wetability appeared to be increased as a result of...

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Bibliographic Details
Published in:The New phytologist 1985-01, Vol.99 (4), p.555-563
Main Authors: Riding, R T, Percy, K L
Format: Article
Language:English
Subjects:
Pinus banksiana
Pinus strobus
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Summary:Exposure of elongating needles of Pinus strobus L. to SO sub(2) and other unidentified air pollutants delayed wax deposition in the epistomatal chambers. Following completion of wax deposition, the wax rodlets fused, forming platelike sheets. Needle wetability appeared to be increased as a result of modification of the epicuticular waxes, potentially increasing their sensitivity to acid rain-induced injury. This occurred without alteration of the structure of the stomatal complex itself. No alteration of wax form was evident on needles of P. banksiana) Lamb., even under conditions which led to acute SO sub(2) foliar injury.
ISSN:0028-646X