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

IF 1 4区农林科学 Q3 PLANT SCIENCES

Journal of General Plant Pathology Pub Date : 2024-06-20 DOI:10.1007/s10327-024-01185-1

Teeranai Poti, Gan Kisaki, Keishi Arita, Kazuya Akimitsu

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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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日本香川县和德岛县与枇杷炭疽病相关的 Colletotrichum 菌种

由 Colletotrichum 菌种引起的炭疽病是枇杷（Eriobotrya japonica）的一种严重病害，但在日本与该病害相关的 Colletotrichum 菌种尚未得到充分调查。本研究于 2017 年和 2018 年从香川县和德岛县的枇杷病叶和病果中分离出 46 个分离株。根据形态学特征和分子方法，确定了 7 个 Colletotrichum 种类：C. fioriniae、C. nymphaeae、C. karsti、C. aenigma、C. fructicola、C. gloeosporioides s. s. 和 C. siamense。最常见的菌种是卡氏菌（占菌种总数的 43.5%），其次是弗氏菌（21.7%）和球孢子菌（13.0%）。所有鉴定出的菌种都符合科赫假说，被证实能引起枇杷炭疽病。枇杷分离出的 C. fioriniae、C. fructicola 和 C. siamense 也会在猕猴桃、沙糖桔、柿子和桃子的所有测试植株上引起症状。本报告是关于与枇杷炭疽病有关的 C. karsti 和 C. aenigma 的首次报告，也是 C. fructicola 在日本的首次记录。

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来源期刊

Journal of General Plant Pathology PLANT SCIENCES-

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

6 months

期刊介绍： The Journal of General Plant Pathology welcomes all manuscripts dealing with plant diseases or their control, including pathogen characterization, identification of pathogens, disease physiology and biochemistry, molecular biology, morphology and ultrastructure, genetics, disease transmission, ecology and epidemiology, chemical and biological control, disease assessment, and other topics relevant to plant pathological disorders.