华北农学报 ›› 2018, Vol. 33 ›› Issue (1): 20-24. doi: 10.7668/hbnxb.2018.01.004

所属专题: 小麦 生物技术

• 论文 • 上一篇    下一篇

小麦成株期抗条锈病基因YrCH7056的定位及其抗源分析

朱艳1, 乔麟轶2, 张晓军2, 李欣2, 杨足君3, 郭慧娟2, 王长彪4, 畅志坚2   

  1. 1. 山西大学 研究生院, 山西 太原 030006;
    2. 山西省农业科学院 作物科学研究所, 作物遗传与分子改良山西省重点实验室, 农业部黄土高原作物基因资源与种质创制重点实验室, 山西 太原 030031;
    3. 电子科技大学 生命科学与技术学院, 四川 成都 610054;
    4. 山西省农业科学院 生物技术研究中心, 山西 太原 030031
  • 收稿日期:2017-12-07 出版日期:2018-02-28
  • 通讯作者: 畅志坚(1952-),男,山西万荣人,研究员,硕士,博士生导师,主要从事小麦抗病育种与种质创新研究。
  • 作者简介:朱艳(1992-),女,山西朔州人,在读硕士,主要从事小麦新基因挖掘研究。
  • 基金资助:
    山西省重点科技创新平台(201605D151002);山西省自然科学基金项目(201601D011001;201601D102051);山西省青年基金项目(2015021145);山西省农业科学院攻关项目(YGG1602;YGG17123);山西省农业科学院作物科学研究所青年基金项目(ZZQ1701)

Location and Resistance Analysis of Stripe Rust Resistance Gene YrCH7056 in Adult Plant Stage of Wheat

ZHU Yan1, QIAO Linyi2, ZHANG Xiaojun2, LI Xin2, YANG Zujun3, GUO Huijuan2, WANG Changbiao4, CHANG Zhijian2   

  1. 1. College of Graduate, Shanxi University, Taiyuan 030006, China;
    2. Institute of Crop Sciences, Shanxi Academy of Agricultural Sciences, Shanxi Key Laboratory of Crop Genetics and Molecular Improvement, Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau of Ministry of Agriculture, Taiyuan 030031, China;
    3. School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China;
    4. Biotechnology Research Center, Shanxi Academy of Agriculture Sciences, Taiyuan 030031, China
  • Received:2017-12-07 Published:2018-02-28

摘要: 为了更好地利用彭提卡偃麦草资源,拓宽小麦抗源育种选择范围,对其抗条锈性和遗传模式进行探究。利用彭提卡偃麦草渗入系CH7056和小麦品种SY95-71构建重组自交系,以条锈混合菌种CYR32+CYR33+v26对重组自交系的F7和F8家系进行成株期抗性鉴定。结果表明:遗传群体家系中抗感单株比例在2013年和2014年间均接近1:1,由此推断CH7056中携带有1个显性抗条锈病基因,暂命名为YrCH7056。利用细胞学技术(基因组原位杂交)已检测不到外源信号。通过对群体抗感池扫描DArT芯片,将YrCH7056初步定位在小麦1B染色体;之后利用1B染色体上的129对公共SSR标记以及72对新开发的偃麦草特异标记构建了YrCH7056的遗传图谱,侧翼标记为1BL-3848555-1.1cM-YrCH7056-2.5cM-barc240。通过比较抗性表现的时期、基因来源以及紧密连锁标记的遗传距离得出,这个抗条锈病基因不同于已定位于染色体1BL上的抗性基因,推断YrCH7056是一个抗条锈病新基因;同时,1BL-3848555在CH7056中的扩增条带与在彭提卡偃麦草和小偃7430中的条带一致,推断YrCH7056可能来自于彭提卡偃麦草。

关键词: 小麦, 彭提卡偃麦草, 条锈病, 成株抗性基因, 分子定位

Abstract: Stripe rust resistance and genetic model from Thinopyrum ponticum(2n=10x=70) were studied to better utilize the resource and expand the selection range of resistance source for breeding in wheat. Recombinant inbred lines (RILs) were constructed by using CH7056, the introgression line of Th. ponticum, and wheat cultivars SY95-71. The F7 and F8 populations from RILs were identified for their adult plant resistance using mixed Pst types CYR32+CYR33+v26. The results showed that the proportion of resistant and susceptible individual plants in the genetic groups were both close to 1:1 in 2013 and 2014, suggesting that CH7056 carried one dominant stripe rust resistance gene,temporarily designated YrCH7056.Exogenous signals had not been detected using genomic in situ hybridization. YrCH7056 was located on wheat chromosome 1B by scaning DArT chip to the bulks of resistance and suspection of RILs.Then 129 pairs of the public SSR markers and 72 pairs of developed Thinopyrum ponticum -specific SSR markers on chromosome 1B were screened to construct the genetic map of YrCH7056. The flanking markers were 1BL-3848555 and barc240 with genetic distance of 1.1,2.5 cM,respectively.The stripe rust resistance gene differs from the resistance gene that had been mapped on chromosome 1BL by comparing the period of resistance,the source of gene,and the close linkage distance of the marker.It was deduced that YrCH7056 was a new gene of stripe rust resistance.In the meantime,the amplified bands of 1BL-3848555 among Thinopyrum ponticum, Thinopyrum ponticum -wheat octoploid Xiaoyan 7430 and CH7056 were the same,which showed that YrCH7056 might derive from Thinopyrum ponticum.

Key words: Wheat, Thinopyrum ponticum, Stripe rust, Adult plant resistance gene, Molecular mapping

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引用本文

朱艳, 乔麟轶, 张晓军, 李欣, 杨足君, 郭慧娟, 王长彪, 畅志坚. 小麦成株期抗条锈病基因YrCH7056的定位及其抗源分析[J]. 华北农学报, 2018, 33(1): 20-24. doi: 10.7668/hbnxb.2018.01.004.

ZHU Yan, QIAO Linyi, ZHANG Xiaojun, LI Xin, YANG Zujun, GUO Huijuan, WANG Changbiao, CHANG Zhijian. Location and Resistance Analysis of Stripe Rust Resistance Gene YrCH7056 in Adult Plant Stage of Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2018, 33(1): 20-24. doi: 10.7668/hbnxb.2018.01.004.

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