ACTA AGRICULTURAE BOREALI-SINICA ›› 2016, Vol. 31 ›› Issue (1): 71-76. doi: 10.7668/hbnxb.2016.01.012

Special Issue: Tobacco Biotechnology

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Cloning and Analysis of Dehydrin Gene NtDEH1 in Nicotiana tabacum

LUO An1, ZHAN Ling2   

  1. 1. College of Life Science, Yangtze University, Jingzhou 434023, China;
    2. College of Life Science, Wuhan University, Wuhan 430072, China
  • Received:2015-11-10 Published:2016-02-28

Abstract: To study the function and mechanism of dehydrin in early embryogenesis of plant,egg cells were isolated from tobacco to construct a cDNA library,and a gene named NtDEH1 were found.The full sequence of NtDEH1 were obtained by RACE,genome cloning and bioinformatics analysis showed that NtDEH1 included a 651 bp CDS region and a 535 bp intron.NtDEH1 which contained 217 amino acids were hydrophilic and acidic,the theory isoelectric point was 5.27.The amino acid homology of NtDEH1 compared Nicotiana tabacum to Nicotiana tomentosiformis,Nicotiana sylvestris,Capsicum annuum,Solanum tuberosum,Solanum lycopersicum and Salvia miltiorrhiza showed that NtDEH1 homologous sequences in all these species were conserved and belonged to SK2 type.5' flanking sequence of NtDEH1 gene was also obtained by genome-walking,and the promoter activity of 5' flanking sequence was checked by transient gene expression.The result laid a foundation in researching the role of NtDEH1 gene in plant reproduction.

Key words: Tobacco, Dehydrin, Gene cloning, NtDEH1, Promoter, Egg cell

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Cite this article

LUO An, ZHAN Ling. Cloning and Analysis of Dehydrin Gene NtDEH1 in Nicotiana tabacum[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(1): 71-76. doi: 10.7668/hbnxb.2016.01.012.

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