Influence of ethylene on nucleic acid synthesis in etiolated Pisum sativum

概要

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Ethylene applied to intact etiolated seedlings of Pisum sativum cv. Alaska inhibits incorporation of ^3H-thymidine into DNA in subsequently excised plumular and sub-apical tissue segments but has no influence on incorporation of ^3H-uridine into RNA. The effect on DNA synthesis begins about 2 hr after ethylene is applied, and intensifies progressively. A similar inhibition of DNA synthesis occurs when ethylene is applied directly to plumular sections cut from control plants, but not with subapical segments under these conditions. Inhibition of DNA synthesis by ethylene is reversed by benzyl adenine in plumular sections. Brief exposure of dark grown seedlings to red light causes a subsequent increase in DNA synthesis in plumular tissue. The changes in DNA synthesis in tissues exposed to ethylene, benzyl adenine and red light are correlated with the effects of these treatments on the mitotic index.
日本植物生理学会の論文