从本地Trichoderma brevicompactum菌株中生物引导分离trichodermin,该菌株对植物病原菌具有强大的抗真菌活性,对植物病原菌具有强烈的抗真菌活性
Dani Daniel Ruiz-Diaz-Mendoza1, Rilsy Fleitas1, Alberto A Cubilla-Rios1
1Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay.
Antonie van Leeuwenhoek
|March 1, 2026
概括
一种土壤真菌Trichoderma brevicompactum FCQ18产生三,一种真菌毒素,有效控制破坏性植物真菌病,如Macrophomina phaseolina和Sclerotinia sclerotiorum.
科学领域:
- 农业科学 农业科学
- 菌群学 菌群学 菌群学是指菌群学
- 生物技术是生物技术.
背景情况:
- 土壤中传播的植物病原菌在农业中造成大量的作物损失.
- 化学杀菌剂带来环境风险,并有助于耐药性.
- 生物防治剂为疾病管理提供了一个可持续的替代方案.
研究的目的:
- 描述一种原生Trichoderma brevicompactum分离物的抗真菌活性 (FCQ18).
- 为了确定负责观察到的抗真菌性质的特定代谢物.
- 为了评估对关键农业病原体的疗效:Macrophomina phaseolina,Rhizoctonia solani和Sclerotinia sclerotiorum.
主要方法:
- 直接对抗测试以评估植物病原体的生长抑制.
- 使用纤维素膜和透析进行抗生素检测,以确定抑制化合物的性质.
- 有机提取物的生物指导分化,使用染色学技术.
- 用于代谢物识别的光谱分析.
主要成果:
- 特里科德尔玛布雷维康巴克FCQ18对所有测试的植物病原体表现出显著的抑制.
- 抗真菌活性归因于由真菌分泌的低分子量分子.
- 染色分离导致了三多德明的鉴定,作为主要的抗真菌化合物.
- 三多德明对M. phaseolina和S. sclerotiorum表现出100%的抑制活性.
结论:
- 特里科德玛 (Trichoderma brevicompactum) FCQ18是一种有前途的生物控制剂,用于控制土壤传播的真菌病.
- 菌根毒素三定素被确定为负责抗真菌活性的关键化合物.
- 这项研究提供了第一个关于三定体对M. phaseolina和S. sclerotiorum的疗效的报告,为可持续农业开辟了新的途径.
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