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Published on: July 30, 2017
Development of microsatellite markers for Pythium helicoides
Yin-Ling1, Wei Zhou, Keiichi Motohashi
1The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan. yinling@green.gifu-u.ac.jp
FEMS Microbiology Letters
|March 13, 2009
Summary
Researchers developed a simple PCR primer design method to identify microsatellite markers in Pythium helicoides. This technique reveals genetic variations crucial for understanding pathogen diversity and evolution.
Area of Science:
- Molecular Biology
- Genetics
- Mycology
Background:
- Microsatellite regions are valuable genetic markers for population studies.
- Pythium helicoides is an important plant pathogen requiring genetic characterization.
Purpose of the Study:
- To develop and validate a simple method for designing PCR primers to amplify microsatellite markers in Pythium helicoides.
- To identify polymorphic microsatellite loci for population genetic analysis of P. helicoides.
Main Methods:
- Combined dual-suppression PCR and thermal asymmetric interlaced PCR (TAIL-PCR) for primer design.
- Designed primers to amplify loci with various repeat motifs (e.g., AC, GA, AGC, CTTT) from the P. helicoides nuclear genome.
- Cloned and sequenced PCR products from three isolates, followed by allele analysis of 30 isolates using capillary electrophoresis.
Main Results:
- Successfully amplified and sequenced microsatellite flanking regions from the P. helicoides genome.
- Detected varying degrees of polymorphism across different microsatellite markers.
- Identified significant length polymorphisms in most loci (except YL-AC) among 30 P. helicoides isolates.
Conclusions:
- A straightforward and effective method for designing PCR primers for microsatellite marker amplification in P. helicoides has been established.
- The developed microsatellite markers are polymorphic and suitable for population genetic studies of Pythium helicoides.
- This approach facilitates the genetic differentiation of P. helicoides isolates from diverse hosts and geographical origins.
