title: Generation of high frequency of novel alleles of the high molecular weight glutenin in somatic hybridization between bread wheat and tall wheatgrass.
abstract: Somatic hybridization between bread wheat and tall wheatgrass (Agropyron elongatum) has generated fertile introgression progenies with novel combinations of high molecular weight glutenin subunits (HMW-GS). Most of these novel HMW-GS alleles were stably inherited. Sixteen HMW-GS sequences were PCR amplified from three introgression progeny lines and sequenced. The alignment of these sequences indicated that five, probably derived from point mutations of the parental genes, whereas eight likely represent the product of replication slippage. Three Glu-1Ay sequences appear to have lost the transposon presented in the parental gene. Two subunits carry an additional cysteine residue, which may be favorable to the quality of end-use product. We demonstrate that novel HMW-GS alleles can be rapidly generated via asymmetric somatic hybridization.
authors.affiliation: The Key Laboratory of Plant Cell Engineering and Germplasm Innovation of the Ministry of Education, School of Life Science, Shandong University, 250100, Jinan, People's Republic of China.
authors.forename: Heng
authors.initials: H
authors.lastname: Liu
authors.forename: Shuwei
authors.initials: S
authors.lastname: Liu
authors.forename: Guangmin
authors.initials: G
authors.lastname: Xia
mesh_terms: D000483:Alleles; D001483:Base Sequence; D001939:Bread; D014644:Genetic Variation; D005983:Glutens / Q000737:chemistry / Q000235:genetics*; D006824:Hybridization, Genetic; D008969:Molecular Sequence Data; D008970:Molecular Weight; D010802:Phylogeny; D006109:Poaceae / Q000235:genetics*; D021122:Protein Subunits / Q000737:chemistry / Q000235:genetics; D016415:Sequence Alignment; D014908:Triticum / Q000737:chemistry / Q000235:genetics
chemical_list: D021122:Protein Subunits; D005983:Glutens; C037302:glutenin