Genome-Wide Association Study Identifies Genes for Wheat Resistance to Tan SpotAugust 4, 2021
A genome-wide association study (GWAS) conducted by scientists at the Institute of Plant Biology and Biotechnology (IPBB) in Kazakhstan and the International Maize and Wheat Improvement Center (CIMMYT) has found new sources of genetic resistance to tan spot disease, a lesser-known pathogen of wheat.
Kazakhstan is one of the main wheat-growing nations in Central Asia and farmers have struggled with tan spot epidemics since the 1980s. Kazakh farmers have reported losing nearly half of their harvest to the disease during epidemic years. Scientists at IPBB and CIMMYT found important and novel genetic associations with resistance to tan spot for the two main races of the disease, race 1 and race 5, which are the most prevalent in Kazakhstan. The research centers assembled a panel with 191 samples of wheat having different levels of resistance from Kazakhstan, Russia, and CIMMYT, through the International Winter Wheat Yield Partnership (IWWYP).
To conduct the GWAS, the scientists used DArTseq to sequence the entries in the panel, a device housed at the CIMMYT global headquarters in Mexico. The DArTseq method sequences the genome representations on the Next Generation Sequencing platforms and generates high-density single nucleotide polymorphisms (SNPs) data in a cost-effective manner. Using the SNPs generated by DArTSeq and the phenotypic scoring of resistance to tan spot at the seedling and adult plant stages in Kazakhstan, the scientists were able to mark genomic regions associated with resistance to the disease. Novel regions on chromosomes 3BS, 5DL, and 6AL were all found to have some promising traits of resistance, especially 6AL, which appears to be superior in protecting plants from both races of the pathogen.
For more details, read the news article on the CIMMYT website.
You might also like:
- Curtin University Researchers Find Way to Keep Crops Disease-Free
- Wheat Disease Resistance-like Gene Stimulates Susceptibility to Necrotrophic Pathogens
- Wheat Relative as Possible Source of Fungal Resistance Genes
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
See more articles:
News from Around the World
- Transgenic Maize Trials Show Outstanding Results in Nigeria
- Experts Propose Measures to Achieve Full Potential of Agricultural Biotechnology in Africa
- Study Documents 13 Years of Adoption and Learning by US Soybean Farmers
- Penn State Researchers Identify Gene that Regulates Angle of Root Growth in Corn
- Insights on Flowering from Two Studies Could Boost Cassava Production
- Genome-Wide Association Study Identifies Genes for Wheat Resistance to Tan Spot
- US Plant Scientists Oppose Ordinance Prohibiting Planting GMOs, Cite Their Benefits Instead
- Scientists Release Genome Assembly for Fielder Wheat Cultivar
- Research Reveals Secrets of an "Immortal" Plant
- Study Explores Degradation of Cry Proteins After Harvest
- Protocol Reveals How to Generate Clonal Seeds from Hybrid Rice with CRISPR-Cas9
- Experts Modify RNA Guides for CRISPR Tools and Therapies
Read the latest:
- Biotech Updates (September 20, 2023)
- Gene Editing Supplement (September 13, 2023)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: