Internal filters: Prospects for UV-acclimation in higher plants |
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Authors: | Martyn M. Caldwell Ronald Robberecht Stephan D. Flint |
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Affiliation: | Dept. of Range Science and the Ecology Center, UMC 52, Utah State Univ., Logan, Utah 84322 USA. |
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Abstract: | Wavelength-selective absorption of solar radiation within plant leaves allows penetration of visible radiation (400–700 nm) to the chloroplasts, while removing much of the damaging ultraviolet-B (UV-B, 280–320 nm) radiation. Flavonoids are important in this wavelength-selective absorption. Induction of flavonoid synthesis by solar radiation, and specifically by UV-B radiation, is discussed as this relates to the potential acclimation of plants to enhanced solar UV-B radiation that would result from stratospheric ozone reduction. |
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Keywords: | Epidermal transmittance flavonoids ozone reduction ultraviolet-B |
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