Zhao Juan, Cheng Yanli, Liu Yayong, Shi Xiaojing, Zhang Taotao, Qin Wentao
Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.
Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.
Front Plant Sci. 2025 Jan 21;15:1504135. doi: 10.3389/fpls.2024.1504135. eCollection 2024.
(Thunb.) Ser. is one of the widely cultivated plants in home gardens and scenic areas of China. Anthracnose disease is commonly observed during the normal growth of , significantly impacting its ornamental and economic values. From 2021 to 2023, an investigation on anthracnose was carried out in nine parks of Beijing, China, and a total of 114 isolates were obtained from the diseased leaves with typical anthracnose symptoms. Based on morphological characteristics and phylogenetic analysis of six genomic loci including rDNA-ITS, , , , , and , these isolates were identified as belonging to six species. Among which, was the most abundant (65 isolates, 57.0%), followed by (33 isolates, 28.9%), (8 isolates, 7.0%), (4 isolates, 3.5%), (2 isolates, 1.8%) and (2 isolates, 1.8%). Pathogenicity test conducted on detached leaves of revealed a distinct variation in virulence among isolates from different species, and wounding was either essential or conducive to successful infection. Specifically, exhibited greater aggressiveness, resulting in larger lesions, while induced lesions most quickly. Fungicide sensitivity assays demonstrated that prochloraz exerted a remarkable inhibitory effect on the mycelial growth of representative isolates belonging to the three predominant species. In contrast to difenoconazole and tebuconazole, the mean EC values for prochloraz against , , and were 0.062, 0.033, and 0.023 μg/ml, respectively. This is the first report of , , and causing anthracnose worldwide including China. These findings have elucidated the species associated with anthracnose as well as their fungicides sensitivities in Beijing, China. This provides a scientific foundation for the accurate diagnosis and local management of anthracnose.
（拇指）系列是中国家庭花园和风景区广泛种植的植物之一。炭疽病在其正常生长过程中普遍可见，严重影响其观赏和经济价值。2021年至2023年，在中国北京的九个公园对[植物名称]炭疽病进行了调查，从具有典型炭疽病症状的病叶中总共获得了114个分离株。基于包括rDNA-ITS、[其他基因座名称1]、[其他基因座名称2]、[其他基因座名称3]、[其他基因座名称4]和[其他基因座名称5]在内的六个基因组位点的形态特征和系统发育分析，这些分离株被鉴定为属于六个[病原菌属名称]物种。其中，[物种名称1]最为丰富（65个分离株，占57.0%），其次是[物种名称2]（33个分离株，占28.9%）、[物种名称3]（8个分离株，占7.0%）、[物种名称4]（4个分离株，占3.5%）、[物种名称5]（2个分离株，占1.8%）和[物种名称6]（2个分离株，占1.8%）。对[植物名称]离体叶片进行的致病性测试表明，来自不同[病原菌属名称]物种的分离株在毒力上存在明显差异，创伤对于成功感染要么是必不可少的，要么是有促进作用的。具体而言，[物种名称1]表现出更强的侵袭性，导致病斑更大，而[物种名称2]诱导病斑出现最快。杀菌剂敏感性测定表明，咪鲜胺对属于三个主要[病原菌属名称]物种的代表性分离株的菌丝生长具有显著抑制作用。与苯醚甲环唑和戊唑醇相比，咪鲜胺对[物种名称1]、[物种名称2]和[物种名称3]的平均EC值分别为0.062、0.033和0.023μg/ml。这是包括中国在内的全球范围内关于[物种名称1]、[物种名称2]、[物种名称3]和[物种名称4]引起[植物名称]炭疽病的首次报道。这些发现阐明了与中国北京[植物名称]炭疽病相关的[病原菌属名称]物种及其对杀菌剂的敏感性。这为[植物名称]炭疽病的准确诊断和当地防治提供了科学依据。
