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An Effective Inoculation Method for Phytophthora capsici on Black Pepper Plants
Published on: September 16, 2022
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Fatal attraction: How Phytophthora zoospores find their host
Michiel Kasteel1, Tijs Ketelaar2, Francine Govers3
1Laboratory of Phytopathology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, the Netherlands; Laboratory of Cell Biology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, the Netherlands.
Seminars in Cell & Developmental Biology
|February 15, 2023
Summary
Oomycete zoospores navigate to host plants using chemical cues. Understanding their homing response, from reorientation to settling, is key to developing new disease control strategies.
Area of Science:
- Plant Pathology
- Microbiology
- Biophysics
Background:
- Oomycete plant pathogens produce motile zoospores for dispersal.
- Zoospores exhibit taxis towards chemical, electrical, and physical cues to locate host plants.
- Root exudates contain attractants and repellents influencing zoospore behavior.
Purpose of the Study:
- To describe the zoospore homing response to attractants.
- To understand zoospore navigation mechanisms.
- To identify potential targets for disease control.
Main Methods:
- Observation of zoospore behavior in response to attractants.
- Analysis of zoospore taxis to various cues.
- Proposal of a behavioral framework for zoospore homing.
Main Results:
- Zoospores exhibit directed swimming behavior towards attractants.
- A mixture of host-derived components is highly attractive to zoospores.
- A four-stage model (reorientation, approaching, retention, settling) describes the homing response.
Conclusions:
- Zoospores employ sophisticated navigation strategies to find host plants.
- Understanding zoospore attractant sensing is crucial for disease management.
- Targeting zoospore attractant perception offers promising disease control avenues.
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