A haplotype specific to North European wheat (Triticum aestivum L.)

0476460 - ÚEB 2018 RIV NL eng J - Journal Article
Tsombalova, J. - Karafiátová, Miroslava - Vrána, Jan - Kubaláková, Marie - Peusa, H. - Jakobson, I. - Jarve, M. - Valárik, Miroslav - Doležel, Jaroslav - Jarve, K.
A haplotype specific to North European wheat (Triticum aestivum L.).
Genetic Resources and Crop Evolution. Roč. 64, č. 4 (2017), s. 653-664. ISSN 0925-9864. E-ISSN 1573-5109
R&D Projects: GA MŠMT(CZ) LO1204; GA ČR(CZ) GA14-07164S
Institutional support: RVO:61389030
Keywords : bread wheat * genetic diversity * polyploid wheat * introgression lines * molecular analysis * tetraploid wheat * hexaploid wheat * powdery mildew * spelta l. * map * Common wheat * Triticum aestivum L * Spelt * Triticum spelta L * Chromosome 4A * Zeroalleles * Haplotype * Linkage disequilibrium
OECD category: Plant sciences, botany
Impact factor: 1.130, year: 2017

A previous study indicated decreased DNA content of chromosome 4A in the wheat (Triticum aestivum L. cv. Tahti) compared to cvs. Chinese Spring and Rennan. Here we show that the lower 4A DNA content is associated with a specific haplotype in the distal part of 4AL. In 41 cultivars of bread wheat (T. aestivum L.), including cv. Tahti, a common haplotype was identified in the linkage disequilibrium region on the long arm of chromosome 4A (4AL). The haplotype (haplotype A) is characterized by 7 SSR and 5 EST marker alleles, including five zero-alleles. Haplotype A was found in 46 % of the Swedish/Finnish/Estonian spring wheat genotypes, while only one of the modern wheat accessions from Germany carried the same haplotype. Fluorescent cytometry analysis linked haplotype A to diminished DNA content of chromosome 4A. The haplotype was introduced into the Canadian and US breeding programs at the beginning of the twentieth century (cvs. Marquis, Thatcher, Ruby) from the common progenitor, the Polish landrace Fife, and it is still found in modern wheat germplasm in these countries. Zeroalleles characteristic for haplotype A were also detected in several accessions of European spelt (Triticum spelta L.), and in two accessions of tetraploid Triticum timopheevii Zhuk. The presence of haplotype A in European spelt indicates the considerable antiquity of the haplotype, as it must have been inherited from the hexaploid or tetraploid parent of spelt in at least one hybridization event.
Permanent Link: http://hdl.handle.net/11104/0272950