Identification and Analysis of Candidate Genes Associated with Maize Fusarium Cob Resistance Using Next-Generation
Aleksandra Sobiech1, Agnieszka Tomkowiak1, Jan Bocianowski2
1Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland.
International Journal of Molecular Sciences
|December 9, 2023
Summary
Researchers identified molecular markers for maize resistance to fusarium head blight. Marker 11801 effectively distinguishes resistant from susceptible plants, aiding in developing disease-resistant maize varieties.
Area of Science:
- Plant Pathology
- Molecular Genetics
- Agricultural Science
Background:
- Increasing pressure to reduce chemical inputs in agriculture.
- Need for crop varieties with enhanced resistance to diseases like fusarium head blight.
- Genome-wide association studies (GWAS) are crucial for identifying resistance genes.
Purpose of the Study:
- Identify novel molecular markers linked to maize resistance genes against fusarium head blight.
- Optimize diagnostic methods for these markers.
- Facilitate marker-assisted selection for disease resistance.
Main Methods:
- Next-generation sequencing (NGS) for marker discovery.
- Association and physical mapping techniques.
- Field trials and molecular analysis of maize genotypes.
Main Results:
- Selected molecular markers associated with maize ear fusariosis resistance.
- Two markers (11801 and 20607) differentiated resistant and susceptible genotypes.
- Marker 11801 showed high efficacy in identifying resistant genotypes.
Conclusions:
- Marker 11801 is a promising tool for preliminary selection of fusarium-resistant maize.
- Further validation on a larger population is planned.
- The linked phosphoenolpyruvate carboxylase kinase 1 gene will be analyzed for expression.
