European hornbeam ( L.) is widely planted in landscaping. In October 2021 and August 2022, leaf spot was observed on in Xuzhou, Jiangsu Province, China. To identify the causal agent of anthracnose disease on , 23 isolates were obtained from the symptomatic leaves. Based on ITS sequences and colony morphology, these isolates were divided into four groups. Koch's postulates of four species showed similar symptoms observed in the field. Combining the morphological characteristics and multi-gene phylogenetic analysis of the concatenated sequences of the internal transcribed spacer (ITS) gene, Apn2-Mat1-2 intergenic spacer (ApMat) gene, the calmodulin (CAL) gene, glyceraldehyde3-phosphate dehydrogenase (GAPDH) gene, Glutamine synthetase (GS) gene, and beta-tubulin 2 (TUB2) genes, the four groups were identified as , , , and . This study is the first report of four species causing leaf spot on European hornbeam in China, and it provides clear pathogen information for the further evaluation of the disease control strategies.
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| http://dx.doi.org/10.3390/jof9040489 | DOI Listing |
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