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- W2080298935 abstract "Low-molecular-weight glutenin subunits (LMW-GS), encoded by Glu-3 complex loci in hexaploid wheat, play important roles in the processing quality of wheat flour. To date, the molecular characteristics and effects on dough quality of individual Glu-3 alleles and their encoding proteins have been poorly studied. We used a Glu-A3 deletion line of the Chinese Spring (CS-n) wheat variety to conduct the first comprehensive study on the molecular characteristics and functional properties of the LMW-GS allele Glu-A3a.The Glu-A3a allele at the Glu-A3 locus in CS and its deletion in CS-n were identified and characterized by proteome and molecular marker methods. The deletion of Glu-A3a had no significant influence on plant morphological and yield traits, but significantly reduced the dough strength and breadmaking quality compared to CS. The complete sequence of the Glu-A3a allele was cloned and characterized, which was found to encode a B-subunit with longer repetitive domains and an increased number of α-helices. The Glu-A3a-encoded B-subunit showed a higher expression level and accumulation rate during grain development. These characteristics of the Glu-A3a allele could contribute to achieving superior gluten quality and demonstrate its potential application to wheat quality improvement. Furthermore, an allele-specific polymerase chain reaction (AS-PCR) marker for the Glu-A3a allele was developed and validated using different bread wheat cultivars, including near-isogenic lines (NILs) and recombinant inbred lines (RILs), which could be used as an effective molecular marker for gluten quality improvement through marker-assisted selection.This work demonstrated that the LMW-GS allele Glu-A3a encodes a specific LMW-i type B-subunit that significantly affects wheat dough strength and breadmaking quality. The Glu-A3a-encoded B-subunit has a long repetitive domain and more α-helix structures as well as a higher expression level and accumulation rate during grain development, which could facilitate the formation of wheat with a stronger dough structure and superior breadmaking quality." @default.
- W2080298935 created "2016-06-24" @default.
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- W2080298935 date "2014-12-01" @default.
- W2080298935 modified "2023-10-14" @default.
- W2080298935 title "Deletion of the low-molecular-weight glutenin subunit allele Glu-A3a of wheat (Triticum aestivumL.) significantly reduces dough strength and breadmaking quality" @default.
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- W2080298935 doi "https://doi.org/10.1186/s12870-014-0367-3" @default.
- W2080298935 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4275963" @default.
- W2080298935 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25524150" @default.
- W2080298935 hasPublicationYear "2014" @default.
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