中国含笑叶枯病报道首例

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-05-08 DOI:10.1016/j.cropro.2025.107263

Shaohua Huang, Jia Cao, Yuxuan Huang, Qianying Luo, Jiayu Luo, Qian Li, Jiahui Huang, Ningwei Mao, Pengmin Fan, Jie Feng, Linping Zhang

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引用次数: 0

摘要

含笑原产于中国，因其优雅的树形和美丽的花朵，在东亚、东南亚、南美和中美洲都是很受欢迎的景观植物。然而，由炭疽病病原菌引起的叶枯萎病常常影响毛迪马的观赏价值。2024年8月，在中国南昌发现了严重叶枯病的毛羽支原体，80%的植株（n = 46）和15%的叶片出现典型的炭疽病症状：最初在叶片边缘出现棕色斑点，随后斑点扩大形成灰黑色坏疽斑。通过分离纯化、内部转录间隔物（ITS）、几丁质合成酶（CHS-1）、肌动蛋白（ACT）、β-微管蛋白2 （TUB2）、甘油醛-3-磷酸脱氢酶（GAPDH）和钙调蛋白（CAL）等位点的多位点系统发育分析，揭示了炭疽菌是引起毛叶枯病的病原菌。通过将C. siamense的孢子悬浮液接种到健康的叶片中进行致病性测试，并从受感染的叶片中重新分离和表征病原体，证实了Koch的假设。这是国内首次报道由C. siamense引起的毛茛叶枯病。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

First report of Michelia maudiae leaf blight caused by Colletotrichum siamense in China

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First report of Michelia maudiae leaf blight caused by Colletotrichum siamense in China

Michelia maudiae is native to China and is popular as a landscape plant in East Asia, Southeast Asia, South America, and Central America for its elegant tree shape and beautiful flowers. However, leaf blight caused by anthracnose pathogens often affects the ornamental value of M. maudiae. In August 2024, M. maudiae with severe leaf blight was found in Nanchang, China, where typical anthracnose symptoms were observed on 80 % of plants (n = 46) and 15 % of leaves: Initially, brown spots first appeared on the edge of the leaves, and then the spots expanded to form grey-black gangrenous patches. Isolation and purification, multi-locus phylogenetic analyses including loci the internal transcribed spacer (ITS), Chitin synthase (CHS-1), actin (ACT), β-tubulin 2 (TUB2), glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and Calmodulin (CAL) revealed Colletotrichum siamense to be the causal agent of leaf blight of M. maudiae. The Koch's postulates was confirmed by inoculating spore suspensions of C. siamense into healthy leaves for pathogenicity tests and by reisolating and characterising the pathogen from infected leaves. This is the first report of M. maudiae leaf blight caused by C. siamense in China.

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.