Abstract
Overwintering of the brown leaf spot fungus, Mycochaetophora gentianae, in infected gentian leaves was studied in Iwate, northern Japan. Sporophores were produced on overwintered, infected leaves when they were sampled from January to July, but not in August after incubation in high humidity at 15 °C. Symptoms developed on gentian plants grown in soil artificially infested with overwintered, infected leaves that were either left throughout the experiments or removed before planting. Few lesions developed when plants were grown in soil infested with conidia. These results indicate that M. gentianae can overwinter in infected leaves, which act as the primary inoculum source.
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References
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Acknowledgments
The authors gratefully acknowledge Dr. Naoyuki Matsumoto for critically reading the manuscript. This study was supported by “Research and development projects for application in promoting new policy of Agriculture Forestry and Fisheries” (No. 2040) from the Ministry of Agriculture, Forestry and Fisheries of Japan.
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Nekoduka, S., Tanaka, K. & Sano, T. Overwintering of brown leaf spot fungus, Mycochaetophora gentianae, in infected gentian leaves as the primary inoculum source. J Gen Plant Pathol 79, 175–177 (2013). https://doi.org/10.1007/s10327-013-0438-6
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DOI: https://doi.org/10.1007/s10327-013-0438-6