生物技术通报 ›› 2014, Vol. 0 ›› Issue (12): 111-116.doi: 10.13560/j.cnki.biotech.bull.1985.2014.12.018

• 研究报告 • 上一篇    下一篇

玉米弯孢叶斑病菌REMI白化突变体的筛选与致病性测定

夏淑春1 ,王学武2, 张茹琴1 ,鄢洪海1   

  1. 1. 青岛农业大学农学与植物保护学院,青岛 266109; 2. 青岛市植物保护站,青岛 266100
  • 收稿日期:2014-06-05 出版日期:2014-12-08 发布日期:2014-12-12
  • 作者简介:夏淑春,女,副教授,研究方向:植物有害生物综合治理;E-mail:xiashuchun@163.com
  • 基金资助:
    山东省科技发展项目(2009GG10009022),山东省自然科学基金项目(ZR2011CL005),山东省“泰山学者”建设工程专项经费 资助项目(BS2009NY040)

Bending Spore of Corn Leaf Spot Fungus REMI Albino Mutant Screening and Determination of Pathogenic Transformation

1Xia Shuchun,2Wang Xuewu,1Zhang Ruqin,1Yan Honghai   

  1. (1. College of Agronomy and Plant Protection, Qingdao Agricultural University, Qingdao 266109; 2. Qingdao Plant Protection Station, Qingdao 266100)
  • Received:2014-06-05 Published:2014-12-08 Online:2014-12-12

摘要: 旨在探讨玉米弯孢叶斑病菌致病机制及遗传变异特性,利用限制性内切酶介导的基因整合技术(REMI)对 Curvularia lunata 进行了遗传转化,共获得 109 个稳定的突变株。PCR 检测结果表明,质粒 pUC-JS 已成功导入突变株中,转化子 既有单拷贝也有多拷贝,白化菌株单拷贝插入频率为 40%。此外,白化玉米弯孢叶斑病菌 REMI 突变株菌落颜色与野生菌株差异 明显,并且在致病性上也明显弱于野生菌株 ;质粒拯救、测序与 blast 分析推测插入可能导致 FAD3 基因功能丧失。

关键词: 玉米弯孢菌叶斑病菌, REMI, 白化菌株, 致病性

Abstract: To investigate bending spore corn leaf spot fungus pathogenic mechanism and genetic variation characteristics, this study using restriction enzymes mediated gene integration technology(REMI)of Curvularia lunata genetic transformation, received 109 stable mutant strains. PCR detection results showed that the plasmid pUC-JS has successfully imported mutant strains, into the son has both single copy and copy, albino strain single copy insert frequency was 40%. In addition, an albino corn bending spore bacteria leaf spot REMI contrast with wild strain of the mutant strains colony color, and also significantly weaker than wild on pathogenic strains. Plasmid save, sequencing and analysis of blast speculated that inserts may result in the loss FAD3 gene function.

Key words: Curvularia lunata REMI, Albino mutant, Pathogenic