伤口依赖于Nigrospora oryzae的感染导致甘叶斑点:病原体特征和杀菌剂敏感性
Ahmad Yusuf Abubakar1,2, Shujie Chen1,2, Qianqi Lu1,2
1Quality Inspection and Testing Center of Sugarcane and Derived Products, Ministry of Agriculture, National Engineering Research Center of Sugarcane, Fujian Agriculture and Forestry University, Fuzhou, China.
Frontiers in plant science
|February 26, 2026
概括
尼格罗斯波拉菌只会在受伤的叶子上感染甘,影响叶绿素和防御反应. 皮拉克洛斯特罗宾+米和二可纳是有效的杀菌剂,用于控制这种机会性病原体.
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.
- 农业科学 农业科学
背景情况:
- 在甘田中越来越多地发现了Nigrospora oryzae.
- 它的感染生物学和有效的化学控制尚未得到充分理解.
研究的目的:
- 为了研究甘中N. oryzae的感染生物学.
- 评估常见的杀菌剂对N. oryzae的疗效.
主要方法:
- 使用形态学和ITS原生学来分离和识别致病真菌.
- 在受伤和未受伤条件下对甘品种ROC22进行致病性测试.
- 评估真菌生长参数,宿主生理反应和杀真菌剂敏感性.
主要成果:
- N. oryzae作为一个依赖于伤口的机会性病原体,只在机械受伤的叶子上引起病变.
- 感染降低了叶绿素含量,增加了与防御相关的酶活动 (POD,SOD,PAL) 和MDA积累.
- 最佳的真菌生长发生在25-30°C和中性的pH值; pyraclostrobin + metiram和difenoconazole显示出最高的疗效.
结论:
- N. oryzae是一种机会性病原体,需要伤口感染甘.
- 杀菌剂敏感性数据为综合管理和耐药性意识的选择提供了基础.
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