{"title":"四川女贞子棒状孢子叶斑病的研究","authors":"Bixia Yu, Ping Li, Yan Zhang, Dong Liu","doi":"10.1080/07060661.2022.2148129","DOIUrl":null,"url":null,"abstract":"<p><b>Abstract</b></p><p><i>Ligustrum quihoui</i> is a perennial shrub that has been cultivated in China as a landscape plant. In November 2020, leaf spots on <i>L. quihoui</i> were observed in several residential areas in the east of Anqing city. Symptoms first appeared as small dark brown dots on the leaf surface which then became larger, forming necrotic lesions and resulting in intense defoliation. To identify the pathogen, infected leaves were collected and cultured on potato dextrose agar (PDA). Three cultures were isolated from the diseased leaves, which grew to form olive green colonies after 5 days of incubation on PDA. Based on colony characteristics, morphology phylogenetic analysis of ribosome transcriptional spacers (rDNA-ITS), and pathogenicity tests, the causal agent of leaf spot on <i>L. quihoui</i> was identified as <i>Corynespora cassiicola</i>. This is the first report to show that <i>C. cassiicola</i> can cause leaf spot on <i>L. quihoui</i>.</p>","PeriodicalId":9468,"journal":{"name":"Canadian Journal of Plant Pathology","volume":"11 1","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Corynespora leaf spot of Ligustrum quihoui caused by Corynespora cassiicola in China\",\"authors\":\"Bixia Yu, Ping Li, Yan Zhang, Dong Liu\",\"doi\":\"10.1080/07060661.2022.2148129\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><b>Abstract</b></p><p><i>Ligustrum quihoui</i> is a perennial shrub that has been cultivated in China as a landscape plant. In November 2020, leaf spots on <i>L. quihoui</i> were observed in several residential areas in the east of Anqing city. Symptoms first appeared as small dark brown dots on the leaf surface which then became larger, forming necrotic lesions and resulting in intense defoliation. To identify the pathogen, infected leaves were collected and cultured on potato dextrose agar (PDA). Three cultures were isolated from the diseased leaves, which grew to form olive green colonies after 5 days of incubation on PDA. Based on colony characteristics, morphology phylogenetic analysis of ribosome transcriptional spacers (rDNA-ITS), and pathogenicity tests, the causal agent of leaf spot on <i>L. quihoui</i> was identified as <i>Corynespora cassiicola</i>. This is the first report to show that <i>C. cassiicola</i> can cause leaf spot on <i>L. quihoui</i>.</p>\",\"PeriodicalId\":9468,\"journal\":{\"name\":\"Canadian Journal of Plant Pathology\",\"volume\":\"11 1\",\"pages\":\"\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2022-12-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Canadian Journal of Plant Pathology\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1080/07060661.2022.2148129\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Journal of Plant Pathology","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1080/07060661.2022.2148129","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
Corynespora leaf spot of Ligustrum quihoui caused by Corynespora cassiicola in China
Abstract
Ligustrum quihoui is a perennial shrub that has been cultivated in China as a landscape plant. In November 2020, leaf spots on L. quihoui were observed in several residential areas in the east of Anqing city. Symptoms first appeared as small dark brown dots on the leaf surface which then became larger, forming necrotic lesions and resulting in intense defoliation. To identify the pathogen, infected leaves were collected and cultured on potato dextrose agar (PDA). Three cultures were isolated from the diseased leaves, which grew to form olive green colonies after 5 days of incubation on PDA. Based on colony characteristics, morphology phylogenetic analysis of ribosome transcriptional spacers (rDNA-ITS), and pathogenicity tests, the causal agent of leaf spot on L. quihoui was identified as Corynespora cassiicola. This is the first report to show that C. cassiicola can cause leaf spot on L. quihoui.
期刊介绍：
Canadian Journal of Plant Pathology is an international journal which publishes the results of scientific research and other information relevant to the discipline of plant pathology as review papers, research articles, notes and disease reports. Papers may be submitted in English or French and are subject to peer review. Research articles and notes include original research that contributes to the science of plant pathology or to the practice of plant pathology, including the diagnosis, estimation, prevention, and control of plant diseases. Notes are generally shorter in length and include more concise research results. Disease reports are brief, previously unpublished accounts of diseases occurring on a new host or geographic region. Review papers include mini-reviews, descriptions of emerging technologies, and full reviews on a topic of interest to readers, including symposium papers. These papers will be highlighted in each issue of the journal and require prior discussion with the Editor-in-Chief prior to submission.
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