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Novel LMW glutenin subunit genes from wild emmer wheat (Triticum turgidum ssp. dicoccoides) in relation to Glu-3 evolution.
Dev Genes Evol. 2015 Jan; 225(1):31-7.DG

Abstract

Four low-molecular-weight-isoleucine (LMW-i)-type and one novel chimeric (between LMW-i and LMW-methionine (m) types) low-molecular-weight glutenin subunit (LMW-GS) genes were characterized from wild emmer wheat (Triticum dicoccoides), designated as emmer-1 to emmer-5. All five LMW-GS genes possessed the same primary structure shared by other published LMW-GSs. The three genes emmer-1, emmer-3, and emmer-5 are similar, with the exception that emmer-3 and emmer-5 lost a few repeat motifs compared to emmer-1. Gene duplication and insertions/deletions of repeat motifs mediated through unequal crossing over may be responsible for the generation of these three Glu-3 alleles. Although the first residue of mature peptide of emmer-4 is isoleucine, it is not typical LMW-i-type LMW-GS. Phylogenetic analysis indicated that emmer-4 is located in the LMW-m subgroup, suggesting a closer relationship with LMW-m-type gene Y14104 of T. durum. Sequence alignment indicated that the emmer-4 is likely a chimeric gene generated by illegitimate recombination between LMW-i and LMW-m type. Unequal crossing over and illegitimate recombination are effective mechanisms for enriching both copy numbers and variations of LMW-GSs.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Qin L
The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Sciences, Shandong University, Jinan, 250100, People's Republic of China.
Liang Y
No affiliation info available
Yang D
No affiliation info available
Sun L
No affiliation info available
Xia G
No affiliation info available
Liu S
No affiliation info available

MeSH

Amino Acid SequenceEvolution, MolecularGenes, PlantGlutensMolecular Sequence DataMolecular WeightPhylogenyProlaminsSequence AlignmentTriticum

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25420747

Citation

Qin, Lumin, et al. "Novel LMW Glutenin Subunit Genes From Wild Emmer Wheat (Triticum Turgidum Ssp. Dicoccoides) in Relation to Glu-3 Evolution." Development Genes and Evolution, vol. 225, no. 1, 2015, pp. 31-7.
Qin L, Liang Y, Yang D, et al. Novel LMW glutenin subunit genes from wild emmer wheat (Triticum turgidum ssp. dicoccoides) in relation to Glu-3 evolution. Dev Genes Evol. 2015;225(1):31-7.
Qin, L., Liang, Y., Yang, D., Sun, L., Xia, G., & Liu, S. (2015). Novel LMW glutenin subunit genes from wild emmer wheat (Triticum turgidum ssp. dicoccoides) in relation to Glu-3 evolution. Development Genes and Evolution, 225(1), 31-7. https://doi.org/10.1007/s00427-014-0484-x
Qin L, et al. Novel LMW Glutenin Subunit Genes From Wild Emmer Wheat (Triticum Turgidum Ssp. Dicoccoides) in Relation to Glu-3 Evolution. Dev Genes Evol. 2015;225(1):31-7. PubMed PMID: 25420747.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Novel LMW glutenin subunit genes from wild emmer wheat (Triticum turgidum ssp. dicoccoides) in relation to Glu-3 evolution. AU - Qin,Lumin, AU - Liang,Yu, AU - Yang,Daozheng, AU - Sun,Lei, AU - Xia,Guangmin, AU - Liu,Shuwei, Y1 - 2014/11/25/ PY - 2014/07/22/received PY - 2014/11/13/accepted PY - 2014/11/26/entrez PY - 2014/11/26/pubmed PY - 2015/5/20/medline SP - 31 EP - 7 JF - Development genes and evolution JO - Dev Genes Evol VL - 225 IS - 1 N2 - Four low-molecular-weight-isoleucine (LMW-i)-type and one novel chimeric (between LMW-i and LMW-methionine (m) types) low-molecular-weight glutenin subunit (LMW-GS) genes were characterized from wild emmer wheat (Triticum dicoccoides), designated as emmer-1 to emmer-5. All five LMW-GS genes possessed the same primary structure shared by other published LMW-GSs. The three genes emmer-1, emmer-3, and emmer-5 are similar, with the exception that emmer-3 and emmer-5 lost a few repeat motifs compared to emmer-1. Gene duplication and insertions/deletions of repeat motifs mediated through unequal crossing over may be responsible for the generation of these three Glu-3 alleles. Although the first residue of mature peptide of emmer-4 is isoleucine, it is not typical LMW-i-type LMW-GS. Phylogenetic analysis indicated that emmer-4 is located in the LMW-m subgroup, suggesting a closer relationship with LMW-m-type gene Y14104 of T. durum. Sequence alignment indicated that the emmer-4 is likely a chimeric gene generated by illegitimate recombination between LMW-i and LMW-m type. Unequal crossing over and illegitimate recombination are effective mechanisms for enriching both copy numbers and variations of LMW-GSs. SN - 1432-041X UR - https://www.unboundmedicine.com/medline/citation/25420747/Novel_LMW_glutenin_subunit_genes_from_wild_emmer_wheat__Triticum_turgidum_ssp__dicoccoides__in_relation_to_Glu_3_evolution_ DB - PRIME DP - Unbound Medicine ER -