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Mesophyll Intrusion Induced by Far-Uv Damage to Leaves of Zebrina pendula

Allan Witztum
Botanical Gazette
Vol. 139, No. 1 (Mar., 1978), pp. 53-55
Stable URL: http://www.jstor.org/stable/2474029
Page Count: 3
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Mesophyll Intrusion Induced by Far-Uv Damage to Leaves of Zebrina pendula
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Abstract

Detached leaves of Zebrina pendula, irradiated on their lower surface with UV light and placed in the dark, became waterlogged and necrotic within 5 days. Incubation in the light prevented much of the damage, and the leaves appeared unchanged except for some loss of anthocyanin in the lower epidermis. Microscopic examination, however, revealed that many epidermal cells were killed and that the space previously occupied by epidermal protoplasts was occupied by intruding mesophyll cells within 3-5 days after the exposure.

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