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GrainGenes Reference Report: GCE-48-599

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Reference	GCE-48-599
Title	Polymorphism of high molecular weight glutenin subunits in three species of Aegilops
Journal	Genetic Resources and Crop Evolution
Year	2001
Volume	48
Pages	599-607
Author	Rodriguez-Quijano M Nieto-Taladriz MT Carrillo JM
Abstract	Summary: A collection of 136 accessions of Aegilops umbellulata (39), Ae. comosa (75) and Ae. markgrafii (22) was analysed for high-molecular-weight (HMW) glutenin subunits composition. The homogeneity of the accessions was studied and 55.1% of the collection was homogeneous for HMW glutenin subunits (29 Ae. umbellulata, 33 Ae. comosa and 14 Ae. markgrafii). The HMW glutenin subunits of Ae. umbellulata are encoded by the Glu-U1 locus; in Ae. comosa results showed that this proteins are encoded at the 1M chromosome, and the locus was named Glu-M1. In Ae. markgrafii it was assumed that HMW glutenin subunits were encoded by an homoeologous locus and it was named Glu- C1. All the accessions of Ae. umbellulata and Ae. markgrafii expressed both, x-type and y-type subunits. Among the Ae. comosa accessions, only one expressed an x-type subunit alone. All the accessions of Ae. umbellulata and some of Ae. comosa had x-type glutenins of higher molecular weights than those commonly present in bread wheat. A total of 8 alleles were detected at the Glu-U1 locus, 11 at the Glu-M1 and 4 at the Glu-C1. The new HMW glutenin variation found in this work suggests their possible utilisation in breeding for wheat quality
Keyword	[ Hide all but 1 of 43 ] accessions ae.markgrafii ae.umbellulata aegilops aegilops comosa aegilops umbellulata aestivum allele allelic variation bread bread wheat bread-making quality breeding chromosome collection composition genetics genome glutenin glutenin subunit glutenins high molecular weight high molecular weight glutenin subunit hmw hmw glutenin hmw glutenin subunit homoeologous locus loci locus molecular molecular weight polymorphism protein quality species storage proteins subunit triticum monococcum variation weight weight glutenin subunit wheat wheat quality

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