{"title":"Emergence and Prevalence of <i>Puccinia polysora</i> in Korea: A Comparitive Study of Maize Rust Pathogens.","authors":"Yoo Kyeong Lee, Jae Sung Lee, Seong-Jin Lee, Moonjong Kim, Hyeon-Dong Shin, Young-Joon Choi","doi":"10.1080/12298093.2025.2536365","DOIUrl":null,"url":null,"abstract":"<p><p>Maize (<i>Zea mays</i> L.) is a globally important cereal crop, but rust diseases caused by <i>Puccinia</i> species increasingly threaten its production. In Korea, maize rust has historically been attributed to <i>Puccinia sorghi</i>; however, recent field observations have suggested the potential presence of <i>Puccinia polysora</i>. This study performed an integrative approach encompassing morphological, molecular, and physiological analyses to characterize maize rusts across different regions of Korea. Light and scanning electron microscopy revealed two distinct morphological groups, differentiated primarily by urediniospore size and shape. Phylogenetic analyses of the internal transcribed spacer (ITS), large subunit (LSU) rDNA, and cytochrome oxidase 3 (COX3) mtDNA sequences confirmed the two groups as <i>P. polysora</i> and <i>P. sorghi</i>. Notably, <i>P. polysora</i> is newly reported in Korea and was the prevalent species over <i>P. sorghi</i> among the collected samples. This study provides novel insights into the identification and epidemiology of maize rusts, contributing to improved disease forecasting and management strategies.</p>","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"53 5","pages":"637-647"},"PeriodicalIF":2.0000,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12337728/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mycobiology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/12298093.2025.2536365","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Maize (Zea mays L.) is a globally important cereal crop, but rust diseases caused by Puccinia species increasingly threaten its production. In Korea, maize rust has historically been attributed to Puccinia sorghi; however, recent field observations have suggested the potential presence of Puccinia polysora. This study performed an integrative approach encompassing morphological, molecular, and physiological analyses to characterize maize rusts across different regions of Korea. Light and scanning electron microscopy revealed two distinct morphological groups, differentiated primarily by urediniospore size and shape. Phylogenetic analyses of the internal transcribed spacer (ITS), large subunit (LSU) rDNA, and cytochrome oxidase 3 (COX3) mtDNA sequences confirmed the two groups as P. polysora and P. sorghi. Notably, P. polysora is newly reported in Korea and was the prevalent species over P. sorghi among the collected samples. This study provides novel insights into the identification and epidemiology of maize rusts, contributing to improved disease forecasting and management strategies.
期刊介绍:
Mycobiology is an international journal devoted to the publication of fundamental and applied investigations on all aspects of mycology and their traditional allies. It is published quarterly and is the official publication of the Korean Society of Mycology. Mycobiology publishes reports of basic research on fungi and fungus-like organisms, including yeasts, filamentous fungi, lichen fungi, oomycetes, moulds, and mushroom. Topics also include molecular and cellular biology, biochemistry, metabolism, developmental biology, environmental mycology, evolution, ecology, taxonomy and systematics, genetics/genomics, fungal pathogen and disease control, physiology, and industrial biotechnology using fungi.