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Resisting Potato Cyst Nematodes With Resistance.
Ulrike Gartner1,2, Ingo Hein1,3, Lynn H Brown1,3
1Cell and Molecular Sciences, The James Hutton Institute, Dundee, United Kingdom.
Frontiers in Plant Science
|April 12, 2021
Summary
Potato cyst nematodes (PCN) are persistent pests. Developing durable PCN-resistant potato varieties using genomics and breeding is crucial for integrated pest management and commercial success.
Area of Science:
- Plant pathology
- Agricultural entomology
- Genetics
Background:
- Potato cyst nematodes (PCN) are significant global pests of potato crops.
- Infestations are often widespread before detection due to non-specific above-ground symptoms and sampling challenges.
- PCN cysts are highly resilient, with eggs remaining viable for over 20 years, making eradication extremely difficult.
Purpose of the Study:
- To review the translation of recent advances in potato genomics into the development of durable PCN-resistant varieties.
- To highlight the importance of resistant varieties as an environmentally friendly component of integrated pest management strategies.
- To discuss the challenges and opportunities in breeding and commercializing PCN-resistant potato cultivars.
Main Methods:
- Review of scientific literature on potato genomics, breeding programs, and nematode resistance.
- Analysis of the application of molecular markers in selecting for PCN resistance genes.
- Examination of the process from gene discovery to commercial acceptance of resistant varieties.
Main Results:
- Wild and landrace potato relatives offer a source of valuable PCN resistance genes.
- Genomic tools enable rapid mapping of resistance genes and development of molecular markers.
- Breeding for durable resistance requires sustained effort and faces commercialization hurdles.
Conclusions:
- Advances in potato genomics provide powerful tools for accelerating the development of PCN-resistant varieties.
- Integrated pest management programs benefit significantly from the inclusion of durable PCN resistance.
- Continued research and strategic breeding efforts are essential to overcome challenges in developing and deploying commercially accepted resistant potato cultivars.
