Phototropism in Hypocotyls of Radish | Zendy

Koji Hasegawa | Zendy; Hisashi KatoNoguchi | Zendy; Tetsuo Iwagawa | Zendy; T. Hase | Zendy

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Phototropism in Hypocotyls of Radish

Author(s) -

Koji Hasegawa,

Hisashi KatoNoguchi,

Tetsuo Iwagawa,

T. Hase

Publication year - 1986

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.81.4.976

Subject(s) - raphanus , hypocotyl , etiolation , phototropism , botany , chemistry , biology , biochemistry , blue light , enzyme , physics , optics

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.

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