一种来自Aspergillus sp.真菌的新型类. 和它的杀虫活性
Ping Wu1, Yonghua Wu2, Yaming Chen2
1School of Engineering, Guangzhou College of Technology and Business, Guangzhou, 510880, China.
Biochemical and biophysical research communications
|January 26, 2026
概括
从一个红树林真菌中分离出了一种新型的sesquiterpenoid,guxinusocapsa B. 这种化合物对亚洲类植物 (Diaphorina citri) 具有强大的杀虫活性.
科学领域:
- 自然产品化学 自然产品化学
- 菌类代谢学 菌类代谢学
- 昆虫毒理学 昆虫毒理学
背景情况:
- 红树林生态系统是各种微生物的丰富来源,有可能发现新的生物活性化合物.
- 阿斯珀吉勒斯菌种是众所周知的生产者,产生了广泛的二次代谢产物,包括类类.
- 亚洲类植物 (Diaphorina citri) 是一个重要的农业害虫,需要寻找新的控制剂.
研究的目的:
- 从与红树林相关的阿斯伯吉卢斯菌株中分离和描述新的化学实体.
- 评估分离的化合物对亚洲类植物的杀虫潜力.
主要方法:
- 在盐酸发酵条件下种植阿斯伯吉路斯菌株GXNU-31G.
- 使用光谱学方法 (1D/2D NMR,HR-ESI-MS) 和单晶X射线晶体学,阐明了新型基体的结构.
- 生物测试以确定与Diaphorina citri.相比的分离化合物的致命性.
主要成果:
- 隔离和表征一种新的类类物种,guxinusocapsa B (1),以及四种已知的同类物种.
- 古西努索卡普萨B表现出强大的杀虫活性,在1000mg/kg的剂量下导致Diaphorina citri中95%的死亡率.
- 完全确定了guxinusocapsa B的平面框架和绝对立体化学.
结论:
- 瓜辛诺科帕萨B代表了一种具有显著杀虫功能的新型甲.
- 这一发现凸显了红树林相关真菌作为新农业化学料来源的潜力.
- 对guxinusocapsa B进行进一步的研究可能会导致开发新的害虫控制策略.
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