title: 4-Hydroxykigelin and 6-demethylkigelin, root growth promoters, produced by Aspergillus terreus.
abstract: Root growth promoters, 4-hydroxykigelin (1) and 6-demethylkigelin (2), together with 6-hydroxymellein (3) were isolated from cultures of the fungus Aspergillus terreus and their structures were identified by spectroscopic analysis. The biological activities of the three dihydroisocoumarins, 1, 2, and 3, have been examined using a bioassay method with lettuce seedlings. Furthermore, interactions between the dihydroisocoumarins and indole-3-acetic acid against the root growth have been examined.
authors.affiliation: Department of Environmental Chemistry, Faculty of Engineering, Kyushu Kyoritsu University, 1-8 Jiyugaoka, Yahatanishi-ku, Kitakyushu-shi, Fukuoka 807-8585, Japan. jun@kyukyo-u.o.ac.jp
authors.forename: Atsumi
authors.initials: A
authors.lastname: Shimada
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Inokuchi
authors.forename: Miyako
authors.initials: M
authors.lastname: Kusano
authors.forename: Sumiyo
authors.initials: S
authors.lastname: Takeuchi
authors.forename: Ryou
authors.initials: R
authors.lastname: Inoue
authors.forename: Michimasa
authors.initials: M
authors.lastname: Tanita
authors.forename: Shozo
authors.initials: S
authors.lastname: Fujioka
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Kimura
mesh_terms: D001230:Aspergillus / Q000737:chemistry* / Q000302:isolation & purification*; D003374:Coumarins / Q000302:isolation & purification* / Q000494:pharmacology*; D006133:Growth Substances / Q000302:isolation & purification* / Q000494:pharmacology; D018545:Lactuca / Q000187:drug effects / Q000254:growth & development; D008958:Models, Molecular; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry* / Q000187:drug effects / Q000254:growth & development*; D012988:Soil Microbiology
chemical_list: C489952:4-hydroxykigelin; C489953:6-demethylkigelin; D003374:Coumarins; D006133:Growth Substances