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Colletotrichum species associated with loquat anthracnose in Kagawa and Tokushima prefectures, Japan

  • Fungal Diseases
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Abstract

Anthracnose caused by Colletotrichum species is a serious disease of loquat (Eriobotrya japonica), but the species of Colletotrichum that are associated with the disease in Japan have not been adequately surveyed. In this study, 46 isolates were isolated from diseased leaves and fruits of loquat in Kagawa and Tokushima prefectures in 2017 and 2018. On the basis of morphological features and molecular approaches, seven Colletotrichum species were identified: C. fioriniae, C. nymphaeae, C. karsti, C. aenigma, C. fructicola, C. gloeosporioides s. s., and C. siamense. The most prevalent species was C. karsti (43.5% of total species), followed by C. fioriniae (21.7%) and C. gloeosporioides s. s. (13.0%). All identified species were confirmed to cause loquat anthracnose by fulfilling Koch’s postulates. The loquat isolates of C. fioriniae, C. fructicola, and C. siamense also caused symptoms on all tested plants of kiwifruit, satsuma mandarin, persimmon, and peach. This report is the first on C. karsti and C. aenigma associated with loquat anthracnose and the first record of C. fructicola in Japan.

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Acknowledgements

We are grateful to Dennis Murphy, The United Graduate School of Agricultural Sciences, Ehime University, Japan, for editing the English of our manuscript. This work was supported by a Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan scholarship (grant number MEXT-202138).

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  1. Faculty of Agriculture, Kagawa University, Miki, Kagawa, 761-0795, Japan

    Teeranai Poti, Keishi Arita & Kazuya Akimitsu

  2. Fuchu Fruit Research Institute, Kagawa Prefectural Agricultural Experiment Station, Sakaide, Kagawa, 762-0024, Japan

    Gan Kisaki

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Poti, T., Kisaki, G., Arita, K. et al. Colletotrichum species associated with loquat anthracnose in Kagawa and Tokushima prefectures, Japan. J Gen Plant Pathol (2024). https://doi.org/10.1007/s10327-024-01185-1

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