Related Experiment Video
Updated: Aug 12, 2026
11:42
Genetic Manipulation of the Plant Pathogen Ustilago maydis to Study Fungal Biology and Plant Microbe Interactions
Published on: September 30, 2016
Isozyme variation in Verticillium dahliae isolates from Crete
E K Ligoxigakis1, G A Fragkiadakis, A G Manganaris
1National Agricultural Research Foundation, Plant Protection Institute, Heraklio, Crete, Greece.
Folia Microbiologica
|June 13, 2002
Summary
Isozyme and molecular analysis revealed genetic variation in Verticillium dahliae isolates from Crete. Specific esterase and RAPD patterns distinguished isolates from the Oropedio area, suggesting local adaptation.
Area of Science:
- Plant Pathology
- Molecular Biology
- Biochemistry
Background:
- Verticillium dahliae is a significant plant pathogen with known races.
- Understanding genetic diversity is crucial for disease management.
- Previous studies have explored V. dahliae variation, but regional adaptations require further investigation.
Purpose of the Study:
- To investigate the isozyme and molecular variation within Verticillium dahliae isolates.
- To determine if genetic differences correlate with known races or geographic origin.
- To explore potential environmental adaptations in V. dahliae populations.
Main Methods:
- Electrophoresis of six enzymes to generate isozyme banding patterns (zymograms).
- Analysis of random-amplified polymorphic DNA (RAPD) using primer OPA-1.
- Comparison of zymograms and RAPD patterns among 15 V. dahliae isolates from Crete.
Main Results:
- Isozyme variations were observed in diaphorase, alpha-esterase, peroxidase, and superoxide dismutase.
- No correlation was found between zymograms and V. dahliae races 1 or 2.
- A distinct esterase zymogram and a specific RAPD pattern identified isolates from the Oropedio area of Lasithi.
Conclusions:
- Isozyme and RAPD analyses reveal genetic differentiation in Verticillium dahliae.
- The observed variations, particularly in Oropedio isolates, suggest adaptation to the local environment.
- Further research into V. dahliae adaptation mechanisms is warranted.
