Vigna radiate 하배축 절편에서 에틸렌 생합성에 대한 리튬이온의 작용 = Action of Lithim Ions on Ethylene Biosynthesis in Hypocotyl Segments of Vigna radiata

다국어 초록 (Multilingual Abstract)

Non-osmotic concentrations of LiCl promoted ethylene production from hypocotyl segments of etiolated mung bean seedlings. Indole-3-acetic acid (IAA)-induced, as well as 1-aminocyclopropane-1-carboxylic acid (ACC)-based ethylene production was further promoted by treatment of the segments with lithium ions. Results of experiments using labelled IAA indicated that the promotive effect of Li^+ on auxininduced ethylene production was not a result of possible mediation of auxin uptake into the cell by the cation. The lithium effect on auxin-induced ethylene production was found to be reversed at high concentrations (eg. 1 mM) of added IAA. Syntheses of both protein and RNA in the tissue as measured by in vivo incorporations of ³H-leucine and ³H-uridine respectively into TCA precipitates were likewise inhibited by lithium ions. Possible sites of lithium action in the pathway of ethylene biosynthesis will be discussed.