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Antifungal activity of the termite alkaloid norharmane against the mycelial growth of Metarhizium anisopliae and Aspergillus nomius |
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| Authors: | Chouvenc Thomas Su Nan-Yao Elliott Monica I |
| Institution: | a Department of Entomology and Nematology, University of Florida, FL, USA b Department of Plant Pathology, University of Florida, FL, USA c Ft. Lauderdale Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 3205 College Avenue, Ft. Lauderdale, FL 33314, USA |
| Abstract: | Antifungal activity of norharmane, a β-carboline alkaloid found in termites (Isoptera, Rhinotermitidae) was tested against two entomopathogenic fungi, Metarhizium anisopliae and Aspergillus nomius. It was determined that, at physiological concentration (10 μg ml−1), norharmane had no significant effect on A. nomius mycelial growth rate but reduced M. anisopliae growth rate by 11.9%. Contrary to previous findings, we suggest that norharmane has a limited role in disease resistance against fungal pathogens in individual subterranean termites, and we discuss the potential role of this chemical at a colony level. |
| Keywords: | Termite Metarhizium Aspergillus Norharmane Disease resistance Antifungal activity |
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