Abstract
Molecular biology methods have elucidated pathogenic processes in several fungal biocontrol agents including two of the most commonly applied entomopathogenic fungi, Metarhizium anisopliae and Beauveria bassiana. In this review, we describe how a combination of molecular techniques has: (1) identified and characterized genes involved in infection; (2) manipulated the genes of the pathogen to improve biocontrol performance; and (3) allowed expression of a neurotoxin from the scorpion Androctonus australis. The complete sequencing of four exemplar species of entomopathogenic fungi including B. bassiana and M. anisopliae will be completed in 2010. Coverage of these genomes will help determine the identity, origin, and evolution of traits needed for diverse lifestyles and host switching. Such knowledge combined with the precision and malleability of molecular techniques will allow design of multiple pathogens with different strategies to be used for different ecosystems and avoid the possibility of the host developing resistance.
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Acknowledgements
The work was supported by the National Basic Research Program of China (2009CB118904), the Knowledge Innovation Program of the Chinese Academy of Sciences (KSCX2-YW-G-037) and by multiple grants from the National Science foundation and the United States Department of agriculture.
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St. Leger, R.J., Wang, C. Genetic engineering of fungal biocontrol agents to achieve greater efficacy against insect pests. Appl Microbiol Biotechnol 85, 901–907 (2010). https://doi.org/10.1007/s00253-009-2306-z
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DOI: https://doi.org/10.1007/s00253-009-2306-z