Fast genetic mapping of complex traits in C. elegans using millions of individuals in bulk.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31213597.
- Also identified by DOI 10.1038/s41467-019-10636-9 and PMC identifier 6582151.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Genetic studies of complex traits in animals have been hindered by the need to generate, maintain, and phenotype large panels of recombinant lines. We developed a new method, C. elegans eXtreme Quantitative Trait Locus (ceX-QTL) mapping, that overcomes this obstacle via bulk selection on millions of unique recombinant individuals. We use ceX-QTL to map a drug resistance locus with high resolution. We also map differences in gene expression in live worms and discovered that mutations in the co-chaperone sti-1 upregulate the transcription of HSP-90. Lastly, we use ceX-QTL to map loci that influence fitness genome-wide confirming previously reported causal variants and uncovering new fitness loci. ceX-QTL is fast, powerful and cost-effective, and will accelerate the study of complex traits in animals.
Medical subject headings
- Caenorhabditis elegans
- Chromosome Mapping
- Genetic Fitness
- Quantitative Trait Loci
- Quantitative Trait, Heritable