Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust
Southern corn rust (SCR) caused by <i>Puccinia polysora</i> Underw. has recently emerged as a focal point of study because of its extensive distribution, significant damage, and high prevalence in maize growing areas such as the United States, Canada, and China. <i>P. polysora</...
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MDPI AG
2025-01-01
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| author | Jiaying Chang Shizhi Wei Yueyang Liu Zhiquan Zhao Jie Shi |
| author_facet | Jiaying Chang Shizhi Wei Yueyang Liu Zhiquan Zhao Jie Shi |
| author_sort | Jiaying Chang |
| collection | DOAJ |
| description | Southern corn rust (SCR) caused by <i>Puccinia polysora</i> Underw. has recently emerged as a focal point of study because of its extensive distribution, significant damage, and high prevalence in maize growing areas such as the United States, Canada, and China. <i>P. polysora</i> is an obligate biotrophic fungal pathogen that cannot be cultured in vitro or genetically modified, thus complicating the study of the molecular bases of its pathogenicity. High temperatures and humid environmental conditions favor SCR development. In severe cases, SCR may inhibit photosynthesis and cause early desiccation of maize, a decrease in kernel weight, and yield loss. Consequently, an expedited and accurate detection approach for SCR is essential for plant protection and disease management. Significant progress has been made in elucidating the pathogenic mechanisms of <i>P. polysora</i>, identifying resistance genes and developing SCR-resistant cultivars. A detailed understanding of the molecular interactions between maize and <i>P. polysora</i> will facilitate the development of novel and effective approaches for controlling SCR. This review gives a concise overview of the biological characteristics and symptoms of SCR, its life cycle, the molecular basis of interactions between maize and <i>P. polysora</i>, the genetic resistance of maize to SCR, the network of maize resistance to <i>P. polysora</i> infection, SCR management, and future perspectives. |
| format | Article |
| id | doaj-art-14bc2b7fe6ba472e9d7524af41d8d004 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Journal of Fungi |
| spelling | doaj-art-14bc2b7fe6ba472e9d7524af41d8d0042025-01-24T13:37:20ZengMDPI AGJournal of Fungi2309-608X2025-01-011114110.3390/jof11010041Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn RustJiaying Chang0Shizhi Wei1Yueyang Liu2Zhiquan Zhao3Jie Shi4Plant Protection Institute, Hebei Academy of Agriculture and Forestry Sciences, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture and Rural Affairs, China, IPM Innovation Center of Hebei Province, International Science and Technology Joint Research Center on IPM of Hebei Province, Baoding 071000, ChinaHebei Universe Agriculture Science and Technology Co., Ltd., Zhangjiakou 075100, ChinaHebei Universe Agriculture Science and Technology Co., Ltd., Zhangjiakou 075100, ChinaAcademic Affairs Office, Hebei Agricultural University, Baoding 071000, ChinaPlant Protection Institute, Hebei Academy of Agriculture and Forestry Sciences, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture and Rural Affairs, China, IPM Innovation Center of Hebei Province, International Science and Technology Joint Research Center on IPM of Hebei Province, Baoding 071000, ChinaSouthern corn rust (SCR) caused by <i>Puccinia polysora</i> Underw. has recently emerged as a focal point of study because of its extensive distribution, significant damage, and high prevalence in maize growing areas such as the United States, Canada, and China. <i>P. polysora</i> is an obligate biotrophic fungal pathogen that cannot be cultured in vitro or genetically modified, thus complicating the study of the molecular bases of its pathogenicity. High temperatures and humid environmental conditions favor SCR development. In severe cases, SCR may inhibit photosynthesis and cause early desiccation of maize, a decrease in kernel weight, and yield loss. Consequently, an expedited and accurate detection approach for SCR is essential for plant protection and disease management. Significant progress has been made in elucidating the pathogenic mechanisms of <i>P. polysora</i>, identifying resistance genes and developing SCR-resistant cultivars. A detailed understanding of the molecular interactions between maize and <i>P. polysora</i> will facilitate the development of novel and effective approaches for controlling SCR. This review gives a concise overview of the biological characteristics and symptoms of SCR, its life cycle, the molecular basis of interactions between maize and <i>P. polysora</i>, the genetic resistance of maize to SCR, the network of maize resistance to <i>P. polysora</i> infection, SCR management, and future perspectives.https://www.mdpi.com/2309-608X/11/1/41southern corn rustmaize<i>Puccinia polysora</i>resistance genesmolecular interactions |
| spellingShingle | Jiaying Chang Shizhi Wei Yueyang Liu Zhiquan Zhao Jie Shi Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust Journal of Fungi southern corn rust maize <i>Puccinia polysora</i> resistance genes molecular interactions |
| title | Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust |
| title_full | Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust |
| title_fullStr | Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust |
| title_full_unstemmed | Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust |
| title_short | Harnessing Genetic Resistance in Maize and Integrated Rust Management Strategies to Combat Southern Corn Rust |
| title_sort | harnessing genetic resistance in maize and integrated rust management strategies to combat southern corn rust |
| topic | southern corn rust maize <i>Puccinia polysora</i> resistance genes molecular interactions |
| url | https://www.mdpi.com/2309-608X/11/1/41 |
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