Emergence and Prevalence of Puccinia polysora in Korea: A Comparitive Study of Maize Rust Pathogens.

IF 2 4区 生物学 Q2 AGRONOMY
Mycobiology Pub Date : 2025-08-07 eCollection Date: 2025-01-01 DOI:10.1080/12298093.2025.2536365
Yoo Kyeong Lee, Jae Sung Lee, Seong-Jin Lee, Moonjong Kim, Hyeon-Dong Shin, Young-Joon Choi
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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.

韩国玉米锈病的发生和流行:玉米锈病病原菌的比较研究。
玉米(Zea mays L.)是全球重要的谷类作物,但由锈病引起的病害日益威胁着玉米的生产。在韩国,玉米锈病历来被认为是高粱锈病;然而,最近的实地观察表明,可能存在多聚毛锈菌。本研究采用了一种综合的方法,包括形态、分子和生理分析,以表征韩国不同地区的玉米锈病。光镜和扫描电镜显示了两个不同的形态群,主要由脲二孢子的大小和形状来区分。内部转录间隔段(ITS)、大亚基(LSU) rDNA和细胞色素氧化酶3 (COX3) mtDNA序列的系统发育分析证实了这两个类群分别为P. polysora和P. sorghi。值得注意的是,在韩国是新报告的,并且在收集的样本中是比高粱假单胞菌更流行的种。该研究为玉米锈病的鉴定和流行病学提供了新的见解,有助于改进病害预测和管理策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Mycobiology
Mycobiology AGRONOMYMYCOLOGY-MYCOLOGY
CiteScore
3.90
自引率
5.30%
发文量
41
审稿时长
22 weeks
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.
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