TY - JOUR
T1 - STAIRS: a new genetic resource for functional genomic studies of Arabidopsis
AU - Koumproglou, R
AU - Wilkes, Timothy
AU - Townson, P
AU - Wang, Xiao
AU - Beynon, James
AU - Pooni, Harpal
AU - Newbury, Henry
AU - Kearsey, Michael
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Many biologically and economically important traits in plants and animals are quantitative/multifactorial, being controlled by several quantitative trait loci (QTL). QTL are difficult to locate accurately by conventional methods using molecular markers in segregating populations, particularly for traits of low heritability or for QTL with small effects. In order to resolve this, large (often unrealistically large) populations are required. In this paper we present an alternative approach using a specially developed resource of lines that facilitate QTL location first to a particular chromosome, then to successively smaller regions within a chromosome (<or = 0.5 cM) by means of simple comparisons among a few lines. This resource consists of "Stepped Aligned Inbred Recombinant Strains" (STAIRS) plus single whole Chromosome Substitution Strains (CSSs). We explain the analytical power of STAIRS and illustrate their construction and use with Arabidopsis thaliana, although the principles could be applied to many organisms. We were able to locate flowering QTL at the top of chromosome 3 known to contain several potential candidate genes.
AB - Many biologically and economically important traits in plants and animals are quantitative/multifactorial, being controlled by several quantitative trait loci (QTL). QTL are difficult to locate accurately by conventional methods using molecular markers in segregating populations, particularly for traits of low heritability or for QTL with small effects. In order to resolve this, large (often unrealistically large) populations are required. In this paper we present an alternative approach using a specially developed resource of lines that facilitate QTL location first to a particular chromosome, then to successively smaller regions within a chromosome (<or = 0.5 cM) by means of simple comparisons among a few lines. This resource consists of "Stepped Aligned Inbred Recombinant Strains" (STAIRS) plus single whole Chromosome Substitution Strains (CSSs). We explain the analytical power of STAIRS and illustrate their construction and use with Arabidopsis thaliana, although the principles could be applied to many organisms. We were able to locate flowering QTL at the top of chromosome 3 known to contain several potential candidate genes.
KW - flowering time
KW - NILs
KW - fine mapping
KW - chromosome substitutions
KW - QTL location
UR - http://www.scopus.com/inward/record.url?scp=0036678063&partnerID=8YFLogxK
U2 - 10.1046/j.1365-313X.2002.01353.x
DO - 10.1046/j.1365-313X.2002.01353.x
M3 - Article
C2 - 12164814
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
SN - 1365-313X
VL - 31
SP - 355
EP - 364
JO - The Plant journal : for cell and molecular biology
JF - The Plant journal : for cell and molecular biology
IS - 3
ER -