title: Effects of kaurane diterpene derivatives on germination and growth of Lactuca sativa seedlings.
abstract: Kaurenoic and grandiflorenic acid, isolated from Wedelia paludosa (Asteraceae), some derivatives from these acids (alcohols, esters, amides, lactones, oximes) and other naturally occurring kaurane diterpenes were tested for their action on the growth of radical and shoot of Lactuca sativa. Gibberellic acid, GA3, a commercially available phytohormone, belonging to the same class of diterpenes, was also tested. Some of the tested substances showed a remarkable activity either in the inhibition or in stimulation of L. sativa growth. The activity, in some cases, was even higher than that of GA3.
authors.affiliation: Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901, Belo Horizonte-MG, Brazil.
authors.forename: Henriete S
authors.initials: HS
authors.lastname: Vieira
authors.forename: Jacqueline A
authors.initials: JA
authors.lastname: Takahashi
authors.forename: Lúcia P S
authors.initials: LP
authors.lastname: Pimenta
authors.forename: Maria Amélia D
authors.initials: MA
authors.lastname: Boaventura
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000494:pharmacology*; D018525:Germination / Q000187:drug effects; D005875:Gibberellins / Q000494:pharmacology; D018545:Lactuca / Q000187:drug effects / Q000235:genetics / Q000502:physiology*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D018520:Plant Shoots / Q000187:drug effects / Q000502:physiology; D012639:Seeds / Q000187:drug effects / Q000502:physiology
chemical_list: D004224:Diterpenes; D005875:Gibberellins; D010936:Plant Extracts; C051436:kaurenoic acid; C007842:gibberellic acid