||Internal Filters: Prospects for UV-Acclimation in Higher Plants.
Caldwell, M. M. ;
Robberecht, R. ;
Flint, S. D. ;
||Utah State Univ., Logan.;Corvallis Environmental Research Lab., OR.
Ultraviolet radiation ;
Optical properties ;
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Wavelength-selective absorption of solar radiation within plant leaves allows penetration of visible radiation (400-700nm) 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.