Structure and evolutionary relationships among paralogous genes within the Sec2 locus in rye

Wang, Yanqian; Zhang, Bo; Liu, Baolong; Zhang, Huaigang; Liu, Dengcai

doi:10.1016/j.jcs.2012.05.012

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2015

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“…Recently, Wang et al . [ 29 ] identified 59 Sec2 sequences from a cultivated rye and derivative lines after crossing with bread wheat. Chen et al .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Molecular Characterization of Sec2 Loci in Wheat—Secale africanum Derivatives Demonstrates Genomic Divergence of Secale Species

Guang-rong

Zhang

Zhou

et al. 2015

IJMS

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The unique 75 K γ-secalins encoded by Sec2 loci in Secale species is composed of almost half rye storage proteins. The chromosomal location of Sec2 loci in wild Secale species, Secale africanum, was carried out by the wheat—S. africanum derivatives, which were identified by genomic in situ hybridization and multi-color fluorescence in situ hybridization. The Sec2 gene-specific PCR analysis indicated that the S. cereale Sec2 was located onchromosome 2R, while the S. africanum Sec2 was localized on chromosome 6Rafr of S. africanum. A total of 38 Sec2 gene sequences were isolated from S. africanum, S. cereale and S. sylvestre by PCR-based cloning. Phylogenetic analysis showed that S. africanum Sec2 diverged from S. cereale Sec2 approximately 2–3 million years ago. The illegitimate recombination of chromosome 2R–6R involving the Sec2 loci region may accelerate sequence variation during evolutionary process from wild to cultivated Secale species.

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“…Recently, Wang et al . [ 29 ] identified 59 Sec2 sequences from a cultivated rye and derivative lines after crossing with bread wheat. Chen et al .…”

Section: Discussionmentioning

confidence: 99%

“…The sequences HQ266670–HQ266677 of S. cereale Sec2 genes published by Wang et al . [ 29 ] were also included in our study. All DNA sequences were aligned using ClustalW Version 1.8 [ 38 ].…”

Section: Methodsmentioning

confidence: 99%