Entomopathogenic fungi (EF) are recognized biological control agents of insects. Basically, the entomopathogenic
fungi pathogen activity depends on the ability of its enzymatic equipment, consisting
of lipases, proteases and chitinases, which are in charge of breaking down the insect’s integument.
Lipases are the first enzymes synthesized by the entomopathogenic fungi. Recently, a
cytochrome P450 subfamily, referred as CYP52XI and MrCYP52 has been identified in Beauveria
bassiana and Metarhizium robertsii, respectively. These break down long-chain alkenes and fatty
acids to become initial nutrients. Subsequently, subtilisin type (Pr1) proteases sintetize; these
enzymes are considered as virulence indicators and they are regulated by a signal transduction
mechanism activated by the protein kinase A (PKA) mediated by AMPc. Through the employment
of genetic engineering, it has been possible to increase virulence producing Pr1 recombinants
with Androctonus australis neurotoxins or with chitinases, reducing the insect’s time of death. In
the course of time, the Pr1 protease gene has presented evolutionary adaptations by gene duplication
or horizontal transfer infecting different orders of insects. In the same way, the entomopathogenic
fungi chitinases have presented a functional diversification. Currently, these have been
phylogenetically classified into three subgroups, in accordance to the catalytic site domain and the
chitin binding domain. The chitinolytic activity has increased through a directed evolution processes
and genetic recombination with Bombyx mori chitinase. Recently, enzymes have been employed
as control agents for insects and phytopathogenic fungi (disease originator) opening new
potentialities in order to improve the entomopathogenic fungi use. Solid state fermentation is a
bioprocess that would produce at great scale enzymes and some other metabolites in grade of increasing
the entomopathogenic fungi virulence, in the control of insects and potentially in some