期刊
INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY
卷 19, 期 3, 页码 558-562出版社
FRIENDS SCIENCE PUBL
DOI: 10.17957/IJAB/15.0335
关键词
Camptothecin; Antifungal activity; Mechanism; Antifungal; Rhizoctonia solani
资金
- National Nature Science Fund of China [31500526]
- China Postdoctoral Science Foundation [2014M561657]
- Zhejiang Provincial Natural Science Foundation of China [LY14C140005]
- Open Fund for Zhejiang Provincial Top Key Discipline of Forestry - Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [KF201328]
The rice sheath blight caused by Rhizoctonia solani is one of the most destructive diseases of rice worldwide. Present study presented the inhibitory effect and mechanism of the plant alkaloid camptothecin on R. solani. Results indicated 14.32, 34.88, 59.94, 68.54, 76.38 and 77.72% inhibition of mycelial growth after 48 h of incubation at 6.25, 12.50, 25.00, 50.00, 100 and 200 mu g/mL camptothecin. The soluble protein content in mycelia was significantly increased, the N-acetyl glucosamine content and chitinase activity was significantly reduced, but the sugar content was unaffected by camptothecin at 100 mu g/mL after 12 h and 24 h treatment. Moreover, the optical microscopic and transmission electron microscopic observation revealed that the fungal mycelia are sparse with a loose structure, mitochondrial nule3mber, and morphological characteristics of camptothecin-treated R. solani. Overall, the antifungal activity of camptothecin against R. solani, suggested that camptothecin has a great potential in the control of rice sheath blight. (C) 2017 Friends Science Publishers
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