Variation in seed dormancy quantitative trait loci in Arabidopsis thaliana originating from one site

R.A. Silady, S. Effgen, M. Koornneef, M. Reymond

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)

Abstract

A Quantitative Trait Locus (QTL) analysis was performed using two novel Recombinant Inbred Line (RIL) populations, derived from the progeny between two Arabidopsis thaliana genotypes collected at the same site in Kyoto (Japan) crossed with the reference laboratory strain Landsberg erecta (Ler). We used these two RIL populations to determine the genetic basis of seed dormancy and flowering time, which are assumed to be the main traits controlling life history variation in Arabidopsis. The analysis revealed quantitative variation for seed dormancy that is associated with allelic variation at the seed dormancy QTL DOG1 (for Delay Of Germination 1) in one population and at DOG6 in both. These DOG QTL have been previously identified using mapping populations derived from accessions collected at different sites around the world. Genetic variation within a population may enhance its ability to respond accurately to variation within and between seasons. In contrast, variation for flowering time, which also segregated within each mapping population, is mainly governed by the same QTL
Original languageEnglish
Article numbere20886
Number of pages6
JournalPLoS ONE
Volume6
DOIs
Publication statusPublished - 2011

Keywords

  • inbred line populations
  • flowering-time
  • natural variation
  • recombinant
  • adaptation

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