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The wheat Phs-A1 pre-harvest sprouting resistance locus delays the rate of seed dormancy loss and maps 0.3 cM distal to the PM19 genes in UK germplasm
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SYSNO ASEP 0463800 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The wheat Phs-A1 pre-harvest sprouting resistance locus delays the rate of seed dormancy loss and maps 0.3 cM distal to the PM19 genes in UK germplasm Tvůrce(i) Shorinola, O. (GB)
Bird, N. (GB)
Simmonds, J. (GB)
Berry, S. (US)
Henriksson, T. (SE)
Jack, P. (GB)
Werner, P. (DE)
Gerjets, T. (GB)
Scholefield, D. (GB)
Balcárková, Barbora (UEB-Q)
Valárik, Miroslav (UEB-Q) RID, ORCID
Holdsworth, M.J. (GB)
Flintham, J. (GB)
Uauy, C. (GB)Zdroj.dok. Journal of Experimental Botany. - : Oxford University Press - ISSN 0022-0957
Roč. 67, č. 14 (2016), s. 4169-4178Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova After-ripening ; dormancy ; PM19 Vědní obor RIV EB - Genetika a molekulární biologie CEP LO1204 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA14-07164S GA ČR - Grantová agentura ČR Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000382060300014 DOI 10.1093/jxb/erw194 Anotace Phs-A1 confers resistance to sprouting in wheat by delaying the rate of seed dormancy loss and is distinct from the previously proposed PM19 candidate genes.The precocious germination of cereal grains before harvest, also known as pre-harvest sprouting, is an important source of yield and quality loss in cereal production. Pre-harvest sprouting is a complex grain defect and is becoming an increasing challenge due to changing climate patterns. Resistance to sprouting is multi-genic, although a significant proportion of the sprouting variation in modern wheat cultivars is controlled by a few major quantitative trait loci, including Phs-A1 in chromosome arm 4AL. Despite its importance, little is known about the physiological basis and the gene(s) underlying this important locus. In this study, we characterized Phs-A1 and show that it confers resistance to sprouting damage by affecting the rate of dormancy loss during dry seed after-ripening. We show Phs-A1 to be effective even when seeds develop at low temperature (13 A degrees C). Comparative analysis of syntenic Phs-A1 intervals in wheat and Brachypodium uncovered ten orthologous genes, including the Plasma Membrane 19 genes (PM19-A1 and PM19-A2) previously proposed as the main candidates for this locus. However, high-resolution fine-mapping in two bi-parental UK mapping populations delimited Phs-A1 to an interval 0.3 cM distal to the PM19 genes. This study suggests the possibility that more than one causal gene underlies this major pre-harvest sprouting locus. The information and resources reported in this study will help test this hypothesis across a wider set of germplasm and will be of importance for breeding more sprouting resilient wheat varieties. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2017
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