Genetic Bottlenecks Reduce Population Variation in an Experimental RNA Virus Population
AUTOR(ES)
Li, Hongye
FONTE
American Society for Microbiology
RESUMO
Genetic bottlenecks are stochastic events that limit genetic variation in a population and result in founding populations that can lead to genetic drift. Evidence of past genetic bottlenecks in numerous biological systems, from mammals to viruses, has been described. In this study, we used an artificial population of Cucumber mosaic virus consisting of 12 restriction enzyme marker-bearing mutants. This population was inoculated onto young leaves of tobacco plants and monitored throughout the course of systemic infection. We show here that the genetic variation in a defined population of an RNA virus is significantly, stochastically, and reproducibly reduced during the systemic infection process, providing clear evidence of a genetic bottleneck.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=516416Documentos Relacionados
- Genetic bottlenecks and population passages cause profound fitness differences in RNA viruses.
- Size of genetic bottlenecks leading to virus fitness loss is determined by mean initial population fitness.
- Population Bottlenecks and Nonequilibrium Models in Population Genetics. III. Genic Homozygosity in Populations Which Experience Periodic Bottlenecks
- Evolution of Multilocus Genetic Structure in an Experimental Barley Population
- An Experimental Test of the Relationship between Genetic Variation and Environmental Variation in Tribolium Flour Beetles