Abstract
Based on their effect on the infection behavior of Magnaporthe grisea, indole-related compounds were classified into three groups. The first group, including tryptophan, indole-3-butyric acid, indole-3-pyruvic acid, and indole-3-acetamide, did not inhibit infection behavior such as spore germination, appressorium formation, or infection hypha formation in M. grisea. The second, including indole acetic acid, indole-3-acetonitrile, oxindole, and tryptamine inhibited all stages of infection behaviors in a dose-dependent manner. The third, including gramine and indole, did not inhibit spore germination or appressorium formation, whereas it did inhibit infection hypha formation in a dose-dependent manner. These results suggest that endogenous or exogenously applied indole-related compounds in the second and third groups may contribute to protection in blast-susceptible plants such as rice and barley.
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Ueno, M., Kihara, J., Honda, Y. et al. Effects of some indole-related compounds on the infection behavior of Magnaporthe grisea. J Gen Plant Pathol 71, 196–199 (2005). https://doi.org/10.1007/s10327-005-0186-3
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DOI: https://doi.org/10.1007/s10327-005-0186-3