title: Changes in catecholamine levels in short day-induced cotyledons of Pharbitis nil.
abstract: We investigated the effects of catecholamine on flower-induction in P. nil (cv. Violet). GC-SIM analysis identified dopamine for the first time in P. nil seedlings. Dopamine levels in the cotyledons did not show a significant change during the inducing dark treatment. The dopamine content of cotyledons exposed to various durations of darkness were 0.1-0.2 nmol/g fresh weight. The same content was found when cotyledons were exposed to continuous light.
authors.affiliation: United Graduate School of Agricultural Science, Gifu University (Shizuoka University), 836 Ohya, Shizuoka 422-8529, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Suzuki
authors.forename: Masaya
authors.initials: M
authors.lastname: Mizoguchi
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Yano
authors.forename: Utako
authors.initials: U
authors.lastname: Hara
authors.forename: Mineyuki
authors.initials: M
authors.lastname: Yokoyama
authors.forename: Naoharu
authors.initials: N
authors.lastname: Watanabe
mesh_terms: D019659:Asteraceae / Q000737:chemistry / Q000502:physiology* / Q000528:radiation effects; D002395:Catecholamines / Q000378:metabolism*; D018548:Cotyledon / Q000737:chemistry / Q000502:physiology*; D003624:Darkness; D004298:Dopamine / Q000378:metabolism; D004837:Epinephrine / Q000378:metabolism; D008027:Light; D009638:Norepinephrine / Q000378:metabolism; D017440:Photoperiod
chemical_list: D002395:Catecholamines; D004298:Dopamine; D009638:Norepinephrine; D004837:Epinephrine