College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing, 210095, P. R. China.
Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, P. R. China.
Plant Dis. 2022 Mar;106(3):996-1002. doi: 10.1094/PDIS-08-21-1853-RE. Epub 2022 Mar 6.
The genus contains multiple species causing dollar spot (DS) on turfgrass worldwide. In November 2020, 119 isolates were obtained from symptomatic seashore paspalum at golf courses in Hainan province and identified to species level based on partial sequence of the internal transcribed spacer (ITS) region. A total of 45 and 22 isolates were identified as and , respectively; the remaining 52 isolates defined a new clade. Isolates from this clade were further selected for phylogenetic, morphological, and biological analyses. Maximum likelihood and Bayesian methods were implemented to obtain phylogenetic trees for partial sequences of the ITS, , and genes. The selected isolates consistently fell into a distinct, well-supported clade within . Morphological and biological characteristics were observed among the different species in . Altogether, this study described a new species, , which has widespread distribution in Hainan, China. These findings may have important implications for the management of DS disease.
该属包含多个种，引起全球草坪上的币斑病（DS）。2020 年 11 月，从海南省高尔夫球场的海滨雀稗感病植株上获得了 119 个分离物，并根据内部转录间隔区（ITS）区域的部分序列鉴定到种的水平。共有 45 个和 22 个分离物分别鉴定为 和 ，其余 52 个分离物定义了一个新的分支。从该分支中选择分离物进行系统发育、形态学和生物学分析。最大似然法和贝叶斯法被用于获得 ITS、 和 基因部分序列的系统发育树。所选分离物一致地属于 within 内一个独特的、支持良好的分支。在 中观察到不同种之间的形态学和生物学特征。总之，本研究描述了一个新种 ，在中国海南广泛分布。这些发现可能对 DS 病的管理具有重要意义。
