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The α-gliadins account for 15–30 % of the total storage protein in wheat endosperm and play important roles in the dough extensibility and nutritional quality. On the other side, they act as a main source of toxic peptides triggering celiac disease. In this study, 37 α-gliadins were isolated from three species of Aegilops section Sitopsis. Sequence similarity and phylogenetic analyses revealed novel...
Phosphoglucan phosphatases (Like-SEX4 1 and 2; LSF1 and LSF2) were reported to play roles in starch metabolism in leaves of Arabidopsis. In this study, we identified and mapped the LSF1 and LSF2 genes in barley (HvLSF1 and HvLSF2), characterized their gene and protein structures, predicted the cis-elements of their promoters, and analysed their expression patterns. HvLSF1 and HvLSF2 were mapped on...
Granule Bound Starch Synthase I (GBSS I) encoded by the waxy gene plays an important role in accumulating amylose during the development of starch granules in barley. In this study, we isolated and characterized waxy alleles of three waxy (GSHO 908, GSHO 1828 and NA 40) and two non-waxy barley accessions (PI 483237 and CIho 15773), estimated the expression patterns of waxy genes via Real-time quantitative...
Many of the unique properties of wheat flour are derived from seed storage proteins such as the α-gliadins. In this study these α-gliadin genes from diploid Triticeae species were systemically characterized, and divided into 3 classes according to the distinct organization of their protein domains. Our analyses indicated that these α-gliadins varied in the number of cysteine residues they contained...
In this study, we report the expression of HMW-GSs in 87 accessions of tetraploid wheat, the characterization of three inactive and one active HMW glutenin genes, and the functional verification of HMW-GSs by promoter–GUS expression. SDS-PAGE profiles revealed that tetraploid wheat has many different combinations of HMW-GSs and the number of subunits varies from 1 to 4. HMW glutenin genes at the Glu...
The pre-mRNA processing (Prp1) gene encodes a spliceosomal protein. It was firstly identified in fission yeast and plays a regular role during spliceosome activation and cell cycle. Plant Prp1 genes have only been identified from rice, Sorghum and Arabidopsisthaliana. In this study, we reported the identification and isolation of a novel Prp1 gene from barley, and further explored its expressional...
Seventy-three gene sequences encoding monomeric α-amylase inhibitors were characterized from cultivated wheat “Chinese Spring”, group 6 nullisomic-tetrasomic lines of “Chinese Spring” and diploid putative progenitors of common wheat. The monomeric α-amylase inhibitors from the different sources shared very high homology (99.54%). The different α-amylase inhibitors, which were determined by the 24...
The compositions of high molecular weight (HMW) glutenin subunits from three species of Taenitherum Nevski (TaTa, 2n = 2x = 14), Ta. caput-medusae, Ta. crinitum and Ta. asperum, were investigated by SDS-PAGE analysis. The electrophoresis mobility of the x-type HMW glutenin subunits were slower or equal to that of wheat HMW glutenin subunit Dx2, and the electrophoresis mobility of the y-type subunits...
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