Comparing the linkage maps of the close relatives Arabidopsis lyrata and A. thaliana.

Published

Journal Article

We have constructed a genetic map of Arabidopsis lyrata, a self-incompatible relative of the plant model species A. thaliana. A. lyrata is a diploid (n = 8) species that diverged from A. thaliana (n = 5) approximately 5 MYA. Mapping was conducted in a full-sib progeny of two unrelated F(1) hybrids between two European populations of A. lyrata ssp. petraea. We used the least-squares method of the Joinmap program for map construction. The gross chromosomal differences between the two species were most parsimoniously explained with three fusions, two reciprocal translocations, and one inversion. The total map length was 515 cM, and the distances were 12% larger than those between corresponding markers in the linkage map of A. thaliana. The 72 markers, consisting of microsatellites and gene-based markers, were spaced on average every 8 cM. Transmission ratio distortion was extensive, and most distortions were specific to each reciprocal cross, suggesting cytoplasmic interactions. We estimate locations and most probable genotype frequencies of transmission ratio distorting loci (TRDL) with a Bayesian method and discuss the possible reasons for the observed distortions.

Full Text

Duke Authors

Cited Authors

  • Kuittinen, H; de Haan, AA; Vogl, C; Oikarinen, S; Leppälä, J; Koch, M; Mitchell-Olds, T; Langley, CH; Savolainen, O

Published Date

  • November 2004

Published In

Volume / Issue

  • 168 / 3

Start / End Page

  • 1575 - 1584

PubMed ID

  • 15579708

Pubmed Central ID

  • 15579708

Electronic International Standard Serial Number (EISSN)

  • 1943-2631

International Standard Serial Number (ISSN)

  • 0016-6731

Digital Object Identifier (DOI)

  • 10.1534/genetics.103.022343

Language

  • eng