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Updated: Aug 7, 2025
07:16
Immunofluorescent Labeling of Plant Virus and Insect Vector Proteins in Hemipteran Guts
Published on: May 14, 2021
1.7K
Interactions between insect vectors and plant pathogens span the parasitism-mutualism continuum
Ma Francesca M Santiago1, Kayla C King1, Georgia C Drew1
1Department of Biology, University of Oxford, Oxford OX1 2JD, UK.
Biology Letters
|March 8, 2023
Summary
Phytopathogens generally have a neutral effect on the fitness of their insect vectors, according to a meta-analysis. However, the impact varies, highlighting the need for tailored vector control strategies in agriculture.
Area of Science:
- Plant pathology
- Entomology
- Evolutionary biology
Background:
- Vector-borne plant pathogens can severely impact agricultural crops.
- The fitness consequences for the insect vectors themselves are not well understood.
- Evolutionary theory suggests pathogens may evolve to be less harmful to their vectors to ensure transmission.
Purpose of the Study:
- To quantify the overall effect of phytopathogens on vector host fitness.
- To explore the diversity of fitness outcomes across different plant-vector-pathogen systems.
- To investigate if transmission strategies influence fitness outcomes.
Main Methods:
- A multivariate meta-analytic approach was employed.
- Data were synthesized from 115 effect sizes across 34 unique plant-vector-pathogen systems.
- Fitness effects were analyzed across the parasitism-mutualism continuum.
Main Results:
- Phytopathogens, on average, exhibit a neutral fitness effect on their vector hosts.
- A wide diversity of fitness outcomes was observed, ranging from parasitic to mutualistic.
- No significant differences in fitness outcomes were found based on transmission strategies or direct/indirect effects.
Conclusions:
- The tripartite interactions between plants, vectors, and pathogens are highly diverse.
- Pathogen effects on vector fitness are not uniformly negative and can be neutral or even beneficial.
- Effective vector control requires strategies tailored to specific pathosystems.
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