Ultraviolet (254 nm) radiation stimulated the efflux of (86)Rb(+) from liquid-cultured tobacco (Nicotiana tabacum) cells; it did not stimulate the movement of mannitol or 2-deoxyglucose. These results indicate that the efflux of (86)Rb(+) is not to a generalized disruption of membrane structure.
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Wright et al. (1978) studied this question.