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- Title
Enhanced conidial thermotolerance and field efficacy of Beauveria bassiana by saccharides.
- Authors
Li, Hua-xiang; Lee, Byong
- Abstract
Insecticide efficacy of Beauveria bassiana conidia was improved by optimizing the concentrations of conidial heat-protective saccharides (glucose, sucrose, maltose, trehalose, α-lactose, and mannitol) using response surface methodology. Two field trials in tea gardens were carried out to control leafhopper ( Empoasca vitis) by spraying B. bassiana conidia together with the optimized saccharides (0.26 g glucose, 0.28 g lactose, 0.24 g mannitol per ml). In the field studies, B. bassiana conidia were applied to control Empoasca vitis with and without saccharides and compared with bifenthrin, a pyrethroid insecticide. With the optimal concentrations of saccharides, the conidial germination rate reached 72 % and the control efficacy of the saccharides group (65.7 %) was equal to the bifenthrin group (69.4 %), which improved by about 55 %.
- Subjects
BEAUVERIA bassiana; SACCHARIDES; EMPOASCA; CLAVICIPITACEAE; DISACCHARIDES
- Publication
Biotechnology Letters, 2014, Vol 36, Issue 12, p2481
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1007/s10529-014-1623-1