导致沙柳叶斑病的 Alternaria spp.的鉴定和特征描述：中国如东的一项研究

IF 2.5 2区农林科学 Q1 AGRONOMY Crop Protection Pub Date : 2024-11-01 DOI:10.1016/j.cropro.2024.107014

Yi-Lin Chen , Bing-Yao Peng , Yu Wan , De-Wei Li , Li-Hua Zhu

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引用次数: 0

摘要

Salix matsudana Koidz.在中国是一种广受欢迎的观赏树木，在整个亚洲都有广泛栽培。它以对艰苦环境的卓越适应性、高生物量、快速生长和耐洪水而闻名。2022 年 10 月，中国江苏如东发现了叶斑病。这种病害严重影响了寄主树的观赏和生态价值。经过致病性测试，从症状叶片中分离出的真菌被证实对 S. matsudana 具有致病性。利用 7 个基因位点（ITS、SSU、RPB2、LSU、ALTα-1、TEF1-α 和 GAPDH）进行的系统发育分析和 9 个分离株的形态特征鉴定表明，这些分离株属于交替丝核菌（Alternaria alternata）、乔木交替丝核菌（Alternaria arborescens）和韩国交替丝核菌（Alternaria koreana）。本研究是首次对导致松树叶斑病的交替孢属进行研究。它为病害管理提供了有价值的见解，并加深了我们对中国交替孢属物种多样性的了解。

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Identification and characterization of Alternaria spp. causing leaf blotch on Salix matsudana: A study from Rudong city, China

Salix matsudana Koidz. is a popular ornamental tree in China and extensively cultured throughout Asia. It is renowned for its remarkable adaptability to challenging conditions, high biomass, rapid growth, and flood tolerances. In October 2022, a leaf blotch disease was observed in Rudong City, Jiangsu, China. This disease significantly impacted the ornamental and ecological value of the host tree. Fungal isolates, obtained from symptomatic leaves, were confirmed to be pathogenic to S. matsudana following pathogenicity tests. Phylogenetic analysis using seven loci (ITS, SSU, RPB2, LSU, ALTα-1, TEF1-α and GAPDH) and morphological characterization of the nine isolates revealed that they belonged to Alternaria alternata, Alternaria arborescens, and Alternaria koreana. This study represents the first study of Alternaria causing leaf blotch in S. matsudana. It provides valuable insights for disease management and enhances our understanding of Alternaria species diversity 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.