Effect of GbKTN1 from Gossypium barbadense on cell elongation of fission yeast (Schizosaccharomyces pombe)

文献类型： 外文期刊

第一作者： Li, WM

作者： Li, WM;Wang, ZX;Jia, SR

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关键词： Sea Island cotton (G. barbadense);GbKTN1;gene expression;fission yeast;cell elongation

期刊名称：CHINESE SCIENCE BULLETIN （ 影响因子：1.649； 五年影响因子：1.738 ）

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收录情况： SCI

摘要： The GbKTN1 gene was isolated from 10 DPA fiber cells of Gossypium barbadense using 5'RACE/3 'RACE. Full-length cDNA of this gene is 2006 bp, including a 113 bp of 5'untranslated region, a 1563 bp of an open reading frame (ORF), and a 327 bp of 3'untranslated region (excluding the stop codon TAA). The ORF of GbKTN1 encodes a 521-amino acid protein with a predicted size of 55 kD. Near C-terminal of the deduced protein there is a putative ATP binding site between amino acid residues from 233 to 414. Southern blot analysis indicated that the GbKTN1 was a single copy gene in G. barbadense. Combining semi-quantitative RT-PCR with Southern blot hybridization revealed that GbKTN1 expressed in all the organs detected such as roots, stems, leaves and fibers. However, the mRNA of GbKTN1 was the most abundant in fiber cells, while it was the lowest in leaves. The GbKTN1 cDNA was transformed into S. pombe to verify its function on cell elongation. Results showed that most yeast cells over expressing GbKTN1 gene were elongated dramatically with an average length increase of 2.18 times than that of the non-induced cells. Even the morphology of some yeast cells appeared irregularly. To the best of our knowledge this is the first evidence that KTN1 is correlated with cell elongation in vivo.

分类号： N1

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