The entomopathogenic fungus Beauveria bassiana activate toll and JAK-STAT pathway-controlled effector genes and anti-dengue activity in Aedes aegypti

Yuemei Dong, James C. Morton, Jose Luis Ramirez, Jayme A. Souza-Neto, George Dimopoulos

Research output: Contribution to journalArticlepeer-review

Abstract

Here we investigated the effect of Beauveria bassiana infection on the survival of Aedes aegypti mosquitoes and the modulation of their susceptibility to dengue virus infection. Application of B.bassiana caused a reduction in the life span of A.aegypti and hindered dengue virus replication in the mosquito midgut. Fungus infection induced the expression a variety anti-microbial and dengue virus restriction factor genes. Transient reverse genetic analyses showed that the JAK-STAT pathway is implicated anti-fungal defense of Aedes mosquitoes. Our data suggest that this B.bassiana-mediated anti-dengue activity is likely to be at least partly indirectly mediated through the activation of the mosquito's anti-dengue Toll and JAK-STAT pathways.

Original languageEnglish (US)
Pages (from-to)126-132
Number of pages7
JournalInsect Biochemistry and Molecular Biology
Volume42
Issue number2
DOIs
StatePublished - Feb 1 2012

Keywords

  • Aedes aegypti
  • Beauveria bassiana
  • Dengue virus
  • Innate immunity

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Insect Science

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