Arthur W. Galston (April 21, 1920 - June 15, 2008) was an American
botanist and
bioethicist. As a plant biologist, Galston studied the effects of light on plant development. He identified
riboflavin and other flavins as photoreceptors involved in
phototropism, the bending of plants toward light, challenging the prevailing view that
carotene was
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