First report of crown rot on lettuce caused by Phytophthora crassamura in Japan

During harvest in August 2017, wilting lettuces with crown rot were observed in Kagawa Prefecture, Japan. Fungi with aseptate hyphae were isolated from the rotted crowns. Based on phylogenetic analyses, morphological characteristics, and minimum, maximum, and optimum temperatures for hyphal growth,...

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Bibliographic Details
Published in:Journal of general plant pathology : JGPP 2024-03, Vol.90 (2), p.120-123
Main Authors: Yosilia, Rani, Feng, Wenzhou, Hieno, Ayaka, Otsubo, Kayoko, Kusunoki, Mikio, Suga, Haruhisa, Kageyama, Koji
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Crown rot
Disease Note
Hyphae
Lettuces
Life Sciences
Microbiology
Phylogeny
Physical characteristics
Phytophthora
Plant Pathology
Vegetables
Wilting
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Summary:During harvest in August 2017, wilting lettuces with crown rot were observed in Kagawa Prefecture, Japan. Fungi with aseptate hyphae were isolated from the rotted crowns. Based on phylogenetic analyses, morphological characteristics, and minimum, maximum, and optimum temperatures for hyphal growth, the isolate was identified as Phytophthora crassamura. This is the first report of lettuce crown rot caused by P. crassamura in Japan. We propose the name crown rot of lettuce ( retasu eki-byo in Japanese) for this lettuce disease.
ISSN:1345-2630
1610-739X
DOI:10.1007/s10327-023-01163-z