title: Plant growth activities of aspyran, asperentin, and its analogues produced by the fungus Aspergillus sp.
abstract: Aspyran (1), a novel compound, and the known isocoumarin asperentin (2), also known as cladosporin, together with its analogues 3-6 were isolated from Aspergillus sp. and their structures established by spectroscopic methods including 2D NMR spectroscopy. The effects of 1-6 on plant growth were examined by bioassays using lettuce and rice seedlings. Compounds 1 and 3 promoted the root growth of the seedlings, while 2 and 5 were inhibitory. Compounds 4 and 6 did not show any effect on the growth of lettuce and rice seedlings, respectively.
authors: Department of Biological and Environmental Chemistry, Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan.
authors: Yasuo
authors: Y
authors: Kimura
authors: Naomi
authors: N
authors: Shimomura
authors: Fumiaki
authors: F
authors: Tanigawa
authors: Shozo
authors: S
authors: Fujioka
authors: Atsumi
authors: A
authors: Shimada
mesh_terms: D000107:Acetylation; D001230:Aspergillus / Q000378:metabolism*; D001565:Benzoates / Q000494:pharmacology*; D049934:Isocoumarins / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D063245:Plant Development / Q000187:drug effects*; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D001565:Benzoates; D049934:Isocoumarins; C578645:aspyran; C000488:cladosporin