Lin Lu, Pan Meng, Tian Chengming, Fan Xinlei
The Key Laboratory for Silviculture, Beijing Forestry University, Conservation of Ministry of Education, Beijing 100083, China.
J Fungi (Basel). 2022 Apr 7;8(4):377. doi: 10.3390/jof8040377.
Species of are considered important plant pathogens of a wide range of plant hosts, especially Salicaceae plants. (Salicaceae, Malpighiales) has been widely cultivated in China because of its strong ecological adaptability, fast growth, and easy reproduction. In this study, a total of eight species of were discovered on in China, including , , , , , , , and . Among them, and were identified as novel species based on morphology and phylogenetic analyses of ITS, , , , and gene sequences and were confirmed as pathogens of willow canker disease by pathogenicity tests. The mycelial growth rates of strains from these two novel species ( and ) had optimum temperatures of 21 to 22 °C and an optimum pH value of 5 to 6. The effectiveness of six carbon sources on the mycelial growth showed that fructose and maltose had the highest influence. species richness was significantly positively correlated with dry and wet areas. This study represents a significant evaluation of associated with willow canker disease in China and provides a theoretical basis for predicting the potential risk of willow canker disease.
[病原菌名称]的物种被认为是多种植物寄主的重要植物病原体，尤其是杨柳科植物。植物名称因其强大的生态适应性、生长迅速和易于繁殖而在中国广泛种植。在本研究中，在中国的[植物名称]上共发现了八种[病原菌名称]，包括[具体病原菌物种1]、[具体病原菌物种2]、[具体病原菌物种3]、[具体病原菌物种4]、[具体病原菌物种5]、[具体病原菌物种6]、[具体病原菌物种7]和[具体病原菌物种8]。其中，[具体病原菌物种1]和[具体病原菌物种2]根据ITS、[其他基因名称1]、[其他基因名称2]、[其他基因名称3]和[其他基因名称4]基因序列的形态学和系统发育分析被鉴定为新物种，并通过致病性测试确认为柳树溃疡病的病原菌。这两个新物种([具体病原菌物种1]和[具体病原菌物种2])菌株的菌丝生长速率在21至22°C时最佳，最适pH值为5至6。六种碳源对菌丝生长的有效性表明，果糖和麦芽糖的影响最大。[病原菌名称]物种丰富度与干湿区域显著正相关。本研究对中国与柳树溃疡病相关的[病原菌名称]进行了重要评估，并为预测柳树溃疡病的潜在风险提供了理论依据。
