Title

Antifungal Activity of Camptothecin, Trifolin, and Hyperoside Isolated from Camptotheca acuminate

Authors

Shiyou Li, Stephen F Austin State University, Arthur Temple College of Forestry and AgricultureFollow
Zhizhen Zhang
Abigail Cain
Bo WangFollow
Melissa Long
Josephine Taylor, Stephen F Austin State University, Department of BiologyFollow

Document Type

Article

Publication Date

2005

Abstract

Leaf spots and root rots are major fungal diseases in Camptotheca acuminata that limit cultivation of the plant for camptothecin (CPT), a promising anticancer and antiviral alkaloid. Bioassays showed that pure CPT and flavonoids (trifolin and hyperoside) isolated from Camptotheca effectively control fungal pathogens in vitro, including Alternaria alternata, Epicoccum nigrum, Pestalotia guepinii, Drechslera sp., and Fusarium avenaceum, although antifungal activity of these compounds in the plant is limited. CPT inhibited mycelial growth by approximately 50% (EC50) at 10-30 íg/mL and fully inhibited growth at 75-125 íg/mL. The flavonoids were less effective than CPT at 50 íg/mL, particularly within 20 days after treatment, but more effective at 100 or 150 íg/mL. CPT, trifolin, and hyperoside may serve as leads for the development of fungicides.

Comments

Originally published in the Journal of Agricultural & Food Chemistry (2005) 53

Posted with permission of The American Chemical Scociety

Repository Citation

Li, Shiyou; Zhang, Zhizhen; Cain, Abigail; Wang, Bo; Long, Melissa; and Taylor, Josephine, "Antifungal Activity of Camptothecin, Trifolin, and Hyperoside Isolated from Camptotheca acuminate" (2005). NCPC Publications and Patents. 29.
https://scholarworks.sfasu.edu/ncpc_articles/29