中国农业科学院机构知识库

Agrobacterium-mediated transformation of durum wheat (Triticum turgidum L. var. durum cv Stewart) with improved efficiency

文献类型：外文期刊

作者： He, Y. ² ; Jones, H. D. ¹ ; Chen, S. ² ; Chen, X. M. ² ; Wang, D. W. ³ ; Li, K. X. ¹ ; Wang, D. S. ² ; Xia, L. Q. ² ;

作者机构： 1.Ctr Crop Genet Improvement, Harpenden AL5 2JQ, Herts, England

2.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China

3.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China

关键词： Acetosyringone;Agrobacterium tumefaciens;durum wheat cv Stewart;picloram;transformation

期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （影响因子：6.992；五年影响因子：7.86 ）

ISSN： 0022-0957

年卷期： 2010 年 61 卷 6 期

页码：

收录情况： SCI

摘要： An efficient Agrobacterium-mediated durum wheat transformation system has been developed for the production of 121 independent transgenic lines. This improved system used Agrobacterium strain AGL1 containing the superbinary pGreen/pSoup vector system and durum wheat cv Stewart as the recipient plant. Acetosyringone at 400 mu M was added to both the inoculation and cultivation medium, and picloram at 10 mg l(-1) and 2 mg l(-1) was used in the cultivation and induction medium, respectively. Compared with 200 mu M in the inoculation and cultivation media, the increased acetosyringone concentration led to significantly higher GUS (beta-glucuronidase) transient expression and T-DNA delivery efficiency. However, no evident effects of acetosyringone concentration on regeneration frequency were observed. The higher acetosyringone concentration led to an improvement in average final transformation efficiency from 4.7% to 6.3%. Furthermore, the concentration of picloram in the co-cultivation medium had significant effects on callus induction and regeneration. Compared with 2 mg l(-1) picloram in the co-cultivation medium, increasing the concentration to 10 mg l(-1) picloram resulted in improved final transformation frequency from 2.8% to 6.3%, with the highest frequency of 12.3% reached in one particular experiment, although statistical analysis showed that this difference in final transformation efficiency had a low level of significance. Stable integration of foreign genes, their expression, and inheritance were confirmed by Southern blot analyses, GUS assay, and genetic analysis. Analysis of T-1 progeny showed that, of the 31 transgenic lines randomly selected, nearly one-third had a segregation ratio of 3:1, while the remainder had ratios typical of two or three independently segregating loci.

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Agrobacterium-mediated transformation of durum wheat (Triticum turgidum L. var. durum cv Stewart) with improved efficiency

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意见箱

Agrobacterium-mediated transformation of durum wheat (Triticum turgidum L. var. durum cv Stewart) with improved efficiency

作者其他论文 更多>>

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意 见 箱

作者其他论文更多>>

意见箱