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Updated: Dec 18, 2025

VIGS-Mediated Forward Genetics Screening for Identification of Genes Involved in Nonhost Resistance
Published on: August 23, 2013
The Ve-resistance locus, a plant signaling intercept
Ross N Nazar1, Xin Xu2, Tae Won Kim3
1Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada. rnnazar@uoguelph.ca.
The Ve-resistance locus in tomato and potato influences plant defense and growth. This study reveals its role in managing stress responses and enhancing crop productivity, supporting a competitive regulatory model.
Area of Science:
- Plant genetics
- Molecular biology
- Crop science
Background:
- The Ve-resistance locus in tomato influences plant defense and growth.
- Genes within this locus exhibit antagonistic effects on stress response and development.
- Previous studies indicated its role in wilt resistance in potato and Arabidopsis.
Purpose of the Study:
- To further investigate the influence of the Ve1 gene in potato.
- To examine the effects on disease resistance and crop productivity.
- To validate the Ve locus as a signaling intercept and explore its competitive regulatory mechanism.
Main Methods:
- Transformation of potato with the Ve1 gene.
- Analysis of disease resistance in transformed potato.
- Assessment of crop productivity and growth parameters.
Main Results:
- Transformed potato exhibited altered disease resistance and crop productivity.
- Effects were consistent with the Ve locus acting as a signaling intercept.
- Antagonistic effects of Ve1 and Ve2 proteins were observed, similar to tomato.
Conclusions:
- The Ve-resistance locus plays a dual role in stress/defense and plant growth.
- A competitive model explains how Ve1 and Ve2 proteins mitigate stress effects and optimize energy allocation.
- This mechanism impacts both disease resistance and tuber development in potato.
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