Light-induced auxin-inhibiting substance from cabbage (Brassica oleacea L.) shoots
1997
Kosemura, S. | Niwa, K. | Emori, H. | Yokotani-Tomita, K. | Hasegawa, K. | Yamamura, S.
A light-induced auxin-inhibitory substance, indolylacetonitrile (IAN), was isolated from light-grown cabbage (Brassica olearea L.) shoots. The IAN content in cabbage shoots increased in response to light. Cabbage hypocotyl elongation is inhibited by 10(-5)M of IAN in 90 min but promoted after 48 hr. Light-induced growth inhibition is caused by the degradation of 3-indolylmethylglucosnolathe (IMG) to IAN which is, in turn, converted to the growth hormone indole-3-acetic acid (IAA).
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