Vector biology: Virus hijacks vector olfaction to target new hosts
1State Key Laboratory of Microbial Diversity and Innovative Utilization, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
Current Biology : CB
|August 5, 2025
Summary
Arboviruses manipulate insect vectors to prefer healthy plants, enhancing their spread. This involves hijacking the insect
Area of Science:
- Ecology
- Evolutionary Biology
- Virology
Background:
- Arboviruses rely on mobile vectors and sessile hosts for transmission.
- Understanding vector-host interactions is key to controlling arbovirus spread.
Purpose of the Study:
- To investigate how arboviruses manipulate insect vector behavior.
- To identify the mechanisms underlying arbovirus-induced host preference shifts.
Main Methods:
- Behavioral assays with insect vectors and plants.
- Molecular analysis of the Toll-olfactory pathway in insect vectors.
Main Results:
- Arboviruses alter insect vector olfactory responses.
- The Toll-olfactory axis is hijacked by the arbovirus.
- Vectors shift preference to healthy, uninfected plants.
Conclusions:
- Arboviruses actively manipulate vector behavior for transmission.
- Hijacking the Toll-olfactory axis promotes efficient cross-species transmission.
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