Identification of LMW Glutenin-Like Genes from Secale sylvestre Host

Identification of LMW Glutenin-Like Genes from Secale sylvestre Host Three low-molecular-weight (LMW) glutenin-like genes (designated as Ssy1, Ssy2, and Ssy3) from Secale sylvestre Host were isolated and characterized. The three genes consist of a predicted highly conservative signal peptide with 20 amino acids, a short N-terminal region with 13 amino acids, a highly variable repetitive domain and a less variable C-terminal domain. The deduced amino acid sequences of the three genes were the LMW-m type due to a methionine residue at the N-terminus. The phylogenetic analysis indicated that the prolamin genes could be perfectly clustered into five groups, including HMW-GS, LMW-GS, α/β-, γ-, and κ-prolamin. The LMW glutenin-like genes of S. sylvestre were more orthologous with the LMW-GS genes of wheat and B hordein genes of barley, which also had been confirmed by the homology analysis with the LMW-GS of wheat at Glu-A3, Glu-B3, and Glu-D3 loci. These results indicated that a chromosome locus (designated as Glu-R3) might be located on the R genome of S. sylvestre with the functions similar to the Glu-3 locus in wheat and its related species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Identification of LMW Glutenin-Like Genes from Secale sylvestre Host

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2005 by MAIK "Nauka/Interperiodica"
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1007/s11177-006-0009-4
Publisher site
See Article on Publisher Site

Abstract

Three low-molecular-weight (LMW) glutenin-like genes (designated as Ssy1, Ssy2, and Ssy3) from Secale sylvestre Host were isolated and characterized. The three genes consist of a predicted highly conservative signal peptide with 20 amino acids, a short N-terminal region with 13 amino acids, a highly variable repetitive domain and a less variable C-terminal domain. The deduced amino acid sequences of the three genes were the LMW-m type due to a methionine residue at the N-terminus. The phylogenetic analysis indicated that the prolamin genes could be perfectly clustered into five groups, including HMW-GS, LMW-GS, α/β-, γ-, and κ-prolamin. The LMW glutenin-like genes of S. sylvestre were more orthologous with the LMW-GS genes of wheat and B hordein genes of barley, which also had been confirmed by the homology analysis with the LMW-GS of wheat at Glu-A3, Glu-B3, and Glu-D3 loci. These results indicated that a chromosome locus (designated as Glu-R3) might be located on the R genome of S. sylvestre with the functions similar to the Glu-3 locus in wheat and its related species.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Jan 17, 2006

References

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