title: New plant growth promoters, repraesentins A, B and C, from Lactarius repraesentaneus.
abstract: Three new plant growth regulatory sesquiterpenoids were isolated from the Lactarius repraesentaneus fungus. Their structures were elucidated to be a protoilludene sesquiterpene, namely repraesentin A (1), and two related sesquiterpenes, namely repraesentins B (2) and C (3). Compounds 1-3 showed promotion activities toward the radicle elongation of lettuce seedlings by 136%, 118% and 184% at 67 ppm, respectively.
authors.affiliation: Department of Bioscience and Biotechnology, Faculty of Agriculture, Shinshu University, Kami-ina, Nagano, Japan. hirotam@gipmc.shinshu-u.ac.jp
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Hirota
authors.forename: Yuji
authors.initials: Y
authors.lastname: Shimizu
authors.forename: Tsunashi
authors.initials: T
authors.lastname: Kamo
authors.forename: Hidefumi
authors.initials: H
authors.lastname: Makabe
authors.forename: Hisao
authors.initials: H
authors.lastname: Shibata
mesh_terms: D005658:Fungi / Q000737:chemistry*; D006860:Hydrogen Bonding; D018545:Lactuca / Q000187:drug effects / Q000254:growth & development; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010937:Plant Growth Regulators / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D036226:Seedlings / Q000187:drug effects / Q000254:growth & development; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*
chemical_list: D010937:Plant Growth Regulators; D012717:Sesquiterpenes; C485585:repraesentin A; C485583:repraesentin B; C485584:repraesentin C