混合真菌菌株挑战宿主耐药性:对玉米中Magnaporthiopsis maydis病原性的洞察
Galia Shofman1,2, Ofir Degani1,2
1Department of Plant Sciences, Migal - Galilee Research Institute, Kiryat Shmona, Israel.
Frontiers in microbiology
|February 11, 2025
概括
玉米晚期枯病是由Magnaporthiopsis maydis引起的,可以克服耐药作物. 复杂的真菌菌株相互作用显著影响疾病严重程度和玉米健康.
科学领域:
- 植物病理学 植物病理学
- 农业科学 农业科学
- 菌类学 菌类学是指菌类学.
背景情况:
- 玉米晚期枯病是由Magnaporthiopsis maydis引起的,威胁着玉米的生产.
- 有毒的真菌菌株可以克服玉米品种的耐药性.
- 了解病原体相互作用对于疾病管理至关重要.
研究的目的:
- 为了评估以色列Magnaporthiopsismaydis菌株在玉米上的致病性.
- 在混合种群中研究不同真菌菌株之间的复杂相互作用.
- 评估玉米年龄对晚期枯病易感性的影响.
主要方法:
- 进行了两次露天试验,使用易受和耐药的玉米品种.
- 玉米植物被接种了弱,中度和高度致病性M. maydis菌株,单独和混合的注射剂.
- 疾病严重程度,生长抑制,死亡率和真菌感染水平在不同的生长阶段进行了评估.
主要成果:
- 即使是微弱的M. maydis菌株也会在易受影响的玉米中引起显著的生长抑制和死亡.
- 耐药品种的影响最小,除了暴露于极具侵略性的孤立品种外.
- 混合注射剂表现出复杂的相互作用,有时最初会减少疾病,但后来会导致更严重的结果.
- 特定的M. maydis亚种表现出明显的致病行为 (增长抑制与枯).
结论:
- 玛格纳波蒂奥普西斯 (Magnaporthiopsis maydis) 呈现出复杂的人口动态和影响疾病严重程度的相互作用.
- 该病原体可以克服玉米的耐药性,对作物产量构成重大威胁.
- 玉米与年龄相关的免疫力在疾病发展中发挥着作用,突出了潜在的风险.
- 为了有效的疾病控制策略,需要进一步研究菌株相互作用和宿主免疫力.
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