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Updated: Jun 25, 2026
11:46
High and Low Throughput Screens with Root-knot Nematodes Meloidogyne spp.
Published on: March 12, 2012
Nematode and grape rootstock interactions including an improved understanding of tolerance
1Nematologist and Postdoctoral Researcher, University of California, Department of Nematology, Riverside, CA 92521.
Journal of Nematology
|March 5, 2009
Summary
Grape cultivars show varied tolerance to nematodes. Phylloxera resistance offers a promising avenue for nematode management, unlike some other resistance mechanisms.
Area of Science:
- Viticulture
- Nematology
- Plant Pathology
Background:
- Grapevine health is significantly impacted by various nematode species.
- Understanding cultivar-specific responses to nematode infestations is crucial for sustainable agriculture.
Purpose of the Study:
- To screen grape cultivars for tolerance to different nematode populations.
- To identify mechanisms of tolerance and resistance to nematode parasitism in grapevines.
Main Methods:
- Screening of sixteen grape cultivars over two years.
- Exposure to ten different nematode populations, including Meloidogyne spp., Xiphinema index, and Mesocriconema xenoplax.
- Evaluation of nematode population development, damage, and impact on vine growth.
Main Results:
- Meloidogyne spp., Xiphinema index, and Mesocriconema xenoplax populations developed faster and caused more damage.
- Some less pathogenic nematodes stimulated vine growth, mimicking tolerance.
- Cultivars with phylloxera (Daktalospharia vitifoliae) resistance showed no growth changes in the presence of nematodes.
Conclusions:
- Nematode tolerance in grapevines involves diverse mechanisms, some of which are vulnerable to specific nematode populations.
- Phylloxera resistance presents a robust strategy for nematode management in grapevines.
- Further research into specific tolerance sources is warranted for effective grapevine protection.
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