Jia Aoli, Lin Lu, Li Yixuan, Fan Xinlei
The Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing 100083, China.
The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, China.
J Fungi (Basel). 2024 Aug 16;10(8):583. doi: 10.3390/jof10080583.
Walnut ( L.) is cultivated extensively in China for its substantial economic potential as a woody oil species. However, many diseases caused by greatly affect the health of trees. The present study revealed the presence of species from . A total of six species of were isolated from twigs of in three provinces in China, including two known species ( and ) and four novel species (, , and ). Phylogenetic relationships of the new species were determined by multilocus phylogenetic analyses based on partial sequences of the internal transcribed spacer (ITS) region, calmodulin () gene, histone H3 () gene, translation elongation factor 1-α () gene and β-tubulin () gene. Pathogenicity tests indicated that all species obtained in this study were confirmed as pathogens of . This study deepens the understanding of species associated with several disease symptoms in and provides useful information for effective disease control.
核桃（Juglans regia L.）作为一种木本油料树种，因其巨大的经济潜力而在中国广泛种植。然而，由[病原体名称未给出]引起的许多病害严重影响了核桃树的健康。本研究揭示了来自[相关地区未给出]的[病原体名称未给出]物种的存在。在中国三个省份的核桃嫩枝中共分离出六种[病原体名称未给出]，包括两个已知物种（[物种名称未给出]和[物种名称未给出]）和四个新物种（[物种名称未给出]、[物种名称未给出]、[物种名称未给出]和[物种名称未给出]）。基于内部转录间隔区（ITS）区域、钙调蛋白（CaM）基因、组蛋白H3（HIS3）基因、翻译延伸因子1-α（TEF1-α）基因和β-微管蛋白（TUB2）基因的部分序列，通过多位点系统发育分析确定了新物种的系统发育关系。致病性测试表明，本研究中获得的所有[病原体名称未给出]物种均被确认为核桃[病害名称未给出]的病原体。本研究加深了对与核桃几种病害症状相关的物种的理解，并为有效的病害控制提供了有用信息。
