This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Web of Science (36) Citing Articles via Google Scholar Google Scholar Articles by Hasegawa, K. Articles by Hase, T. Search for Related Content PubMed PubMed Citation Articles by Hasegawa, K. Articles by Hase, T. Agricola Articles by Hasegawa, K. Articles by Hase, T.

Articles

Phototropism in Hypocotyls of Radish ¹

I. Isolation and Identification of Growth Inhibitors, cis- and trans-Raphanusanins and Raphanusamide, Involved in Phototropism of Radish Hypocotyls

Biological Institute, College of Liberal Arts, Kagoshima University, Korimoto 1-21-30, Kagoshima 890, Japan, Department of Chemistry, Faculty of Science, Kagoshima University, Korimoto 1-21-30, Kagoshima 890, Japan

Three growth inhibitors which might be involved in phototropism of Sakurajima radish (Raphanus sativus var. hortensis f. gigantissimus Makino) hypocotyls, were isolated as crystalline forms from light-exposed radish seedlings and identified as cis- and trans-raphanusanins and 6-methoxy-2,3,4,5-tetrahydro-1,3-oxazepin-2-one (designated raphanusamide). The cis- and trans-raphanusanins inhibited growth of etiolated radish hypocotyls at concentrations higher than 1.5 micromolar, raphanusamide at concentrations higher than 20 micromolar.