Oy-0 x Col-0 

 

The Oy-0 x Col-0 RIL population has been generated at INRA Versailles (France) between 2004 and 2008. The recombinant inbred lines were derived from a cross between Oy-0 and Col-0 accessions, where Col-0 (=186AV in Versailles) and Oy-0 (=224AV in Versailles) are lines derived respectively from accessions N1092 and N1436 from the Nottingham Arabidopsis Stock Center. Lines were conducted through Single Seed Descent until F6 generation without selection. Then one plant per line was chosen again for selfing to obtain F7 seeds, which were used as a bulk for genotyping (equivalent to genotyping THE F6 plant). Today, F8 seeds from bulk multiplication of F7 plants are available for distribution.

When you use the Oy-0 x Col-0 population, thank you to cite this article:
Simon, M., Loudet, O., Durand, S., Bérard, A., Brunel, D., Sennesal, F-X, Durand-Tardif, M., Pelletier, G. and Camilleri, C. (2008). QTL mapping in five new large RIL populations of Arabidopsis thaliana genotyped with consensus SNP markers. Genetics 178: 2253-2264.

Pubmed

DOI

 

All the lines have been produced at the same time in a greenhouse. F8 seeds from 470 RILs successfully genotyped are distributed (Complete RIL set); they can be used directly for phenotyping tasks. At least 12-15 plants should be bulked for multiplication purposes to avoid segregation bias. To avoid any problem of identification, lines SHOULD NOT be renamed. Stock Numbers provided (from 1 to 520) correspond to a unique number for each line. Some numbers do not exist anymore in the population: plants were lost at intermediate generations, essentially because of sterility, or lines were removed because genotyping data were missing.

Two sub-sets of lines were designed following goals close to the 'selective mapping' strategy. These sub-sets gather the lines with the most interesting (recombined) genotypes, removing lines with missing data points and globally ensuring a better allelic equilibrium.

With 164 lines, the Core-Pop164 is intended for optimised QTL mapping when using all 470 lines is impractical.

With only 20 lines, the 20 RIL-Minimal set is of course NOT intended for mapping, but rather to give an idea of the variation and transgression of any specific trait in the Oy-0 x Col-0 population using a small number of lines (together with the parents). The 20-Minimal set is fully included in the Core-Pop164 set.

Lists of the different sets of lines (Complete RIL set, Core-Pop164, Not Core-Pop164, 20-Minimal set) are included in this Excel file -> OyxCol_RILLists.xls

 

The Oy-0 x Col-0 RILs (470 F6 plants) have been used to build a genetic map with 85 markers (of which 77 SNP markers: Single Nucleotide Polymorphism).

Genetic map parameters:
 Average distance between markers: 5.1 cM
 Missing-data rate: 0.3 % 
 Whole-population residual heterozygosity (F6): 3.4 % 
 Global allelic equilibrium: Col-0 50.8 % / Oy-0 49.2 % 
 % of genome free of distortion (at 1%) : 92 % 
 Maximum allelic distortion rate: Col-0 59.9 % / Oy-0 40.1 % (Chromosome 2 - around 10.2 Mb)

The genotype data is included in the following files:
 The complete genotype data (470 RILs, each row from row#8 is a RIL) is included in the Excel file -> OyxCol_Genotypes.xls, where "A"=Col; "B"=Oy-0; "C"=Het; "D"=NA (missing)

The raw data ordered marker by marker is included in the text file -> OyxCol_Genotypes.raw, with the following code: "A"=Col; "B"=Oy-0; "U"=NA. In this file, heterozygotes are considered (and coded) as missing data ("U"). This file is a specific format that can be used as input file in some QTL mapping tools.

Genetic and physical positions (as of TAIR back in 2007) of the markers on the maps are indicated in the Excel file -> OyxCol_MapCoord.xls.