Colletotrichum gloeosporioides, a novel causal agent of Magnolia × soulangeana leaf blotch

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-05-06 DOI:10.1016/j.cropro.2025.107262

Yu-Qing Bai , Hui Li , Yu Wan , De-Wei Li , Li-Hua Zhu

引用次数: 0

Abstract

Magnolia × soulangeana Soul.-Bod. is a small arbor with ecological, economic and ornamental value. In October 2022, a serious outbreak of a foliar disease was recorded in Nanjing Forestry University, Jiangsu Province, with an incidence rate of 73 %. The diseased leaves showed curved, desiccated, and brown necrotic lesions. Five representative fungal isolates (YL 1-1, YL 1–2, YL 1–4, YL 1–5, and YL 1–6) were isolated from leaves exhibiting symptoms. The isolates were confirmed as Colletotrichum gloeosporioides through morphological and multi-locus phylogenetic approaches. Pathogenicity was confirmed through conidia suspension inoculation and fulfillment of Koch's postulates. This represents the first documentation of C. gloeosporioides as the pathogen responsible for leaf blotch on M. × soulangeana in China and worldwide.

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白玉兰叶斑病新病原炭疽菌的研究

白玉兰灵魂-身体。是一种具有生态、经济和观赏价值的小乔木。2022年10月，江苏省南京林业大学发生了一次严重的叶面病害暴发，发病率为73%。病叶呈弯曲、干枯、褐色坏死。从有症状的叶片中分离出5株具有代表性的真菌（YL 1-1、YL 1-2、YL 1-4、YL 1-5和YL 1-6）。通过形态学和多位点系统发育方法证实该分离株为炭疽菌gloeosporioides。通过分生孢子悬液接种证实了病原菌的致病性，并满足了科赫定律。这是在中国和世界范围内第一次有文献证明gloeosporioides是引起褐叶蝉叶斑病的病原菌。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.