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2005 | 46 | 4 | 349-355
Article title

Isolation of low-molecular-weight glutenin subunit genes from wild emmer wheat (Triticum dicoccoides)

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EN
Abstracts
EN
Three low-molecular-weight glutenin subunit (LMW-GS) genes, designated LMW-Td1, LMW-Td2 and LMW-Td3, were isolated from wild emmer wheat (Triticum dicoccoides), which is the tetraploid progenitor of common wheat (T. aestivum). The complete nucleotide sequence lengths of LMW-Td1, LMW-Td2 and LMW-Td3 are 858, 900 and 1062 bp, respectively. LMW-Td1 and LMW-Td3 can encode proteins with 284 and 352 amino acid residues, respectively, whereas LMW-Td2 is a putative pseudogene due to the presence of 3 inframe stop codons in its C-terminal domain. The deduced protein sequences of the 3 genes share the same typical polypeptide structures with known LMW-GS genes containing 8 cysteines in the mature protein domains. LMW-Td1 was clearly distinguished from all known LMW-GS genes, and considered as a novel LMW-GS gene. Two hydrophobic motifs (i.e. PIIIL and PVIIL) were observed in the repetitive domain of LMW-Td3. Sequence comparison indicates that sequences of the 3 LMW-GS genes from this study are strongly similar to known LMW-GS genes. Our phylogenetic analysis suggests that LMW-Td1 and LMW-Td2 are homologous with genes on chromosome 1A, and LMW-Td3 is closely related to genes on chromosome 1B.
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Year
Volume
46
Issue
4
Pages
349-355
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author
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References
Document Type
ARTICLE
Publication order reference
Y.L. Zheng, Triticeae Research Institute, Sichuan Agricultural University, Dujiangyan, Sichuan 611830, China
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YADDA identifier
bwmeta1.element.element-from-psjc-ca053432-e7eb-3a74-b2f8-b6cf18a8ed12
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