Combining Experimental Evolution and Genomics to Understand How Seed Beetles Adapt to a Marginal Host Plant.

ABSTRACT: Genes that affect adaptive traits have been identified, but our knowledge of the genetic basis of adaptation in a more general sense (across multiple traits) remains limited. We combined population-genomic analyses of evolve-and-resequence experiments, genome-wide association mapping of performance traits, and analyses of gene expression to fill this knowledge gap and shed light on the genomics of adaptation to a marginal host (lentil) by the seed beetle Callosobruchus maculatus. Using population-genomic approaches, we detected modest parallelism in allele frequency change across replicate lines during adaptation to lentil. Mapping populations derived from each lentil-adapted line revealed a polygenic basis for two host-specific performance traits (weight and development time), whic

SUBMITTER: Rego A 

PROVIDER: S-EPMC7230198 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature