The Influence of Leaf "Windows" on Crassulacean Acid Metabolism in the South African Succulent Senecio Rowleyanus (Asteraceae) |
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Authors: | Egbert KJ Martin CE |
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Institution: | (1) Department of Botany, University of Kansas, Lawrence, Kansas 66045-2106, USA |
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Abstract: | Net CO2 exchange rate (PN) of shoots and diel fluctuations in titratable acidity of leaves of Senecio rowleyanus were measured to determine whether
penetration of radiant energy through leaf “windows” (narrow, translucent strips on the leaf epidermis) resulted in increased
CAM. Nocturnal PN and nighttime increases in acidity were compared among plants with windows covered with reflective adhesive tape, transparent
adhesive tape (to control for potential effects of the adhesive), and no tape. The windows did not significantly enhance the
degree of CAM in S. rowleyanus.
This revised version was published online in September 2006 with corrections to the Cover Date. |
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Keywords: | CO2 gas exchange chlorenchyma water-storage parenchyma |
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