Phytotoxicity of indole-3-acetic acid produced by the fungus, Pythium aphanidermatum.
Pythium aphanidermatum causes the serious disease of Pythium red blight on bentgrass. IAA, one of the metabolites that has been isolated from this fungus, showed the same symptom of Pythium red blight on bentgrass at a concentration of 1,000 mg/1. The IAA content in the foliage of bentgrass infected by this fungus was about 200 times that of an untreated control. These results suggest that IAA produced by this fungus was the causal substance of Pythium red blight on bentgrass.
Shimada
A
A
Department of Environmental Chemistry, Faculty of Engineering, Kyushu Kyoritsu University, Kitakyushu, Japan. jun@kyukyo-u.ac.jp
Takeuchi
S
S
Nakajima
A
A
Tanaka
S
S
Kawano
T
T
Kimura
Y
Y
D007210:Indoleacetic Acids / Q000378:metabolism / Q000494:pharmacology*; D019787:Linoleic Acid / Q000494:pharmacology; D010935:Plant Diseases / Q000139:chemically induced*; D006109:Poaceae / Q000187:drug effects* / Q000382:microbiology; D011775:Pythium / Q000378:metabolism*
D007210:Indoleacetic Acids; C030737:indoleacetic acid; D019787:Linoleic Acid