抗茎腐病转基因小麦新种质的筛选
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国家转基因生物新品种培育重大专项;江苏省产学研联合创新基金;江苏省农业科技自主创新资金


Screening of transgenic wheat germplasm resistant to crown rot
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National ‘Key Sci-Tech’ projects; Cooperative innovation fund of Jiangsu province; Jiangsu agricultural science and technology innovation fund

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    摘要:

    为拓宽小麦茎腐病(又称茎基腐病)抗源种类,筛选抗茎腐病小麦新种质,对43份转TaPIMP1、AtNPR1和Gastrodianin基因小麦纯合株系,进行目的基因表达分析,以及茎腐病、纹枯病和赤霉病抗性鉴定。结果表明,转基因株系的目的基因均能正常表达;转基因株系间茎腐病抗性差异明显,24份转基因株系茎腐病抗性,比受体对照扬麦12显著提高;转基因株系茎腐病抗性与纹枯病抗性相关显著,与赤霉病相关不明显;结合农艺性状鉴定,筛选出5份抗茎腐病转基因株系,其中2份兼抗纹枯病和赤霉病,1份兼抗纹枯病,可作为长江中下游麦区茎腐病备用抗源。

    Abstract:

    To improve the wheat crown rot (CR), an important disease in wheat area of the middle and lower reaches of Yangtze River, we have transferred three genes, TaPIMP1, AtNPR1, Gastrodianin, to Yangmai12 using particle bombardment method. Forty-three of the homozygous transgenic lines with three alien genes were obtained, and the mRNA expression levels were analyzed. Meanwhile, we evaluated the transgenic plants resistance for the diseases of wheat crown rot, sharp eyespot (SE) and Fusarium head blight (FHB). The results have showed that the alien genes could express normally in the transgenic lines. However, the resistance levels differ among 43 transgenic lines. Twenty-four transgenic lines exhibit significant elevated resistance to wheat CR comparing to the recipient variety Yangmai12. The notable correlation was also observed between CR and SE but not CR and FHB. In the study, we have obtained a series of resistant materials, including two lines with the resistance to CR, SE and FHB and one line both resistant to CR and FHB, which will play a significant role in disease resistance breeding in the future.

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周淼平,姚金保,杨学明,等.抗茎腐病转基因小麦新种质的筛选[J].植物遗传资源学报,2014,15(5):1107-1112.

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  • 收稿日期:2014-03-05
  • 最后修改日期:2014-03-27
  • 录用日期:2014-08-07
  • 在线发布日期: 2014-09-05
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