Deciphering the Relationships Among Enzymatic Systems and Virulence of Beauveria bassiana: A Review

Manish Dhawan; Neelam Joshi; Samandeep Ghuman; Saroop Sandhu; Meenu Sharma

doi:10.20944/preprints202009.0696.v1

Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 28 September 2020 / Approved: 29 September 2020 / Online: 29 September 2020 (08:57:33 CEST)

Intensive crop production and extensive use of harmful synthetic chemical pesticides create numerous socio-economic problems worldwide. Therefore, sustainable solutions are needed for insect pest control, such as biological control agents. The fungal insect pathogen Beauveria bassiana has shown considerable potential as a biological control agent against a broad range of insects. The insights into virulence mechanism of B. bassiana is essential to show the robustness of its use. B. bassiana has several determinants of virulence, including the production of cuticle-degrading enzymes (CDEs), such as proteases, chitinases, and lipases. CDEs are essential in the infection process as they hydrolyze the significant components of the insect's cuticle. Moreover, B. bassiana has evolved effective antioxidant mechanisms that include enzyme families that act as ROS scavengers, e.g., superoxide dismutases, catalases, peroxidases, and thioredoxins. In B. bassiana, the number of CDEs and antioxidant enzymes characterized in recent years. The enzymatic activities are crucial for the biological control potential and significantly advanced our understanding of the infection mechanism of B. bassiana. This review focuses on the progress detailed in the studies of these enzymes and provides an overview of enzymatic activities and their contributions to virulence.

Beauveria bassiana; cuticle degrading enzymes; entomopathogenic fungi; pathogenesis; virulence

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Deciphering the Relationships Among Enzymatic Systems and Virulence of Beauveria bassiana: A Review

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