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Published on: March 11, 2020
4-Hydroxykigelin and 6-demethylkigelin, root growth promoters, produced by Aspergillus terreus
Atsumi Shimada1, Tomohisa Inokuchi, Miyako Kusano
1Department 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
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.
