Phytotoxicity of Indole-3-acetic Acid Produced by the Fungus, Pythium aphanidermatum

Atsumi SHIMADA; Sumiyo TAKEUCHI; Akira NAKAJIMA; Satoshi TANAKA; Tsuyoshi KAWANO; Yasuo KIMURA

doi:10.1271/bbb.64.187

Organic Chemistry Note

Phytotoxicity of Indole-3-acetic Acid Produced by the Fungus, Pythium aphanidermatum

Atsumi SHIMADA, Sumiyo TAKEUCHI, Akira NAKAJIMA, Satoshi TANAKA, Tsuyoshi KAWANO, Yasuo KIMURA

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Keywords: phytotoxicity, indole-3-acetic acid (IAA), Pythium aphanidermatum, bentgrass

JOURNAL FREE ACCESS

2000 Volume 64 Issue 1 Pages 187-189

DOI https://doi.org/10.1271/bbb.64.187

[Correction] Biosci. Biotechnol. Biochem. Vol.64 (2000) No.2 p.E5

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Abstract

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/l. 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.

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