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Updated: Jun 8, 2025

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作为杀菌剂的除草剂:针对玉米病原体Ustilago maydisdis中的血生物合成

Djihane Damoo¹, Matthias Kretschmer¹, Christopher W J Lee¹

¹Michael Smith Laboratories, Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada.

Molecular plant pathology

|November 2, 2024

概括

针对菌Ustilago maydis中的血生物合成,有效地抑制了它对玉米植物的毒性. 重新利用像BroadStar这样的除草剂为作物防治真菌病原体提供了一个有希望的策略.

科学领域:

植物病理学植物病理学
菌类学菌类学是指菌类学.
生物化学生物化学

背景情况:

病原体的扩散依赖于从宿主组织中获取营养.
血生物合成对于植物病原菌的毒性至关重要,例如Ustilago maydis.

研究的目的:

调查生物合成作为控制玉米Ustilago maydis病毒性的目标.
评估针对血红素生物合成的除草剂在作物保护方面的潜力.

主要方法:

使用hem12基因的调节促进体构建有条件的血红素辅助基因.
通过RNA-seq.分析真菌的血红素吸收,毒性和对外源血红素的转录反应.
对除草剂BroadStar (flumioxazin) 作为抗真菌剂的评估.

主要成果:

有条件的血辅食菌无法引起疾病,这表明U. maydis不能从玉米中获得足够的血.
通过RNA-seq检测,发现了一种ABC载体,该载体参与了血红和异生生物的反应.
除草剂BroadStar有效地抑制了玉米中U. maydis疾病的进展.

结论:

血生物合成对于乌斯蒂拉戈可能的病原体产生至关重要.
向血红素生物合成途径是控制真菌疾病的可行策略.
重新利用像flumioxazin这样的除草剂为作物保护提供了一种新的方法.

关键词:

生物特异性生物特异性玉米污染病是玉米污染的疾病.这是一种真菌病原体的病原体.植物病原体的产生.

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