Insect Immunity to Entomopathogenic Fungi
1University of Maryland, College Park, MD, United States.
Advances in Genetics
|May 1, 2016
Summary
Insect immunity research, focusing on fungal pathogens like Metarhizium and Beauveria, reveals specialized defense strategies beyond conserved innate immunity networks. Evolutionary genetics highlights insect-pathogen coevolution.
Area of Science:
- Insect immunology
- Innate immunity
- Pathogen-host interactions
Background:
- Insect immune mechanisms share fundamental traits with vertebrate innate immunity.
- Drosophila studies elucidated conserved networks like Toll, often using human pathogens.
- This approach may overlook specialized insect defenses against natural pathogens.
Purpose of the Study:
- To review insect immune strategies against natural fungal pathogens (Metarhizium, Beauveria).
- To highlight studies on insect-pathogen coevolution and evolutionary genetics of immunity.
- To explore behavioral, physical, and immune response strategies in insects.
Main Methods:
- Review of studies using Metarhizium and Beauveria spp. as insect pathogens.
- Analysis of research on insect behavioral avoidance and physical barriers.
- Examination of studies on local and systemic immune responses in insects.
Main Results:
- Fungal pathogens drive specialized insect immune strategies.
- Behavioral and physical defenses are crucial alongside immune activation.
- Evolutionary genetics provides insights into insect-pathogen coevolutionary dynamics.
Conclusions:
- Understanding insect immunity requires studying natural pathogens and coevolution.
- Specialized immune strategies have evolved in insects against fungi.
- Metarhizium and Beauveria research illuminates key aspects of insect defense.
