Occurrence of Nigrospora osmanthi causing leaf spot on Artemisia argyi in China

IF 2.5 2区 农林科学 Q1 AGRONOMY Crop Protection Pub Date : 2025-02-04 DOI:10.1016/j.cropro.2025.107142
Kuan Yang , Xiyao Yang , Mengzhi Li , Danxia Li , Xianzhang Huang , Chao Li
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Abstract

Artemisia argyi, a perennial herbaceous plant of the Asteraceae family, is extensively distributed and holds substantial medicinal value. In August 2023, symptoms of A. argyi leaf spot disease were observed at a A. argyi planting base in Qiaotou Town, Nanyang City, Henan Province, with an incidence rate exceeding 90%. The disease manifested as multiple dark brown, nearly circular spots on the leaf surface, which subsequently led to leaf yellowing, withering, and defoliation. To identify the pathogen, analyses of morphological characteristics, phylogenetic analyses of multiple genes, and pathogenicity tests were conducted. The results indicated that the pathogen was Nigrospora osmanthi. To our knowledge, this is the first report of N. osmanthi causing leaf spots on A. argyi in China.
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导致蒿草叶斑病的 Nigrospora osmanthi 在中国的发生情况
艾草是菊科多年生草本植物,分布广泛,具有重要的药用价值。2023年8月,在河南省南阳市桥头镇某艾叶种植基地发现艾叶斑病症状,发病率超过90%。该病表现为叶片表面出现多处深棕色近圆形斑点,随后导致叶片变黄、枯萎和落叶。对病原菌进行了形态特征分析、多基因系统发育分析和致病性检测。结果表明,病原菌为桂花黑孢菌。据我们所知,这是中国首次报道桂花蓟马引起艾叶斑病。
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来源期刊
Crop Protection
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.
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