生物技术通报 ›› 2016, Vol. 32 ›› Issue (9): 197-202.doi: 10.13560/j.cnki.biotech.bull.1985.2016.09.026

• 研究报告 • 上一篇    下一篇

生防链霉菌SSD49的绿色荧光蛋白标记及其在毛白杨组培苗中的定殖

刘晓瑜, 马玉超   

  1. 北京林业大学生物科学与技术学院,北京 100083
  • 收稿日期:2015-12-06 出版日期:2016-09-25 发布日期:2016-10-10
  • 作者简介:刘晓瑜,女,硕士研究生,研究方向:植物内生菌的抑菌活性研究;E-mail:liu.xiaoyu1991@163.com
  • 基金资助:
    国家林业局林业公益性行业科研专项(201304409),北京市科技新星项目(2011033),国家自然科学基金项目(J1103516),中央高校基本科研业务费(YX2014-15)

Green Fluorescent Protein Marker of Biocontrol Streptomyces SSD49 and Its Colonization on the Populus tomentosa Somaclone

LIU Xiao-yu, MA Yu-chao   

  1. College of Biological Sciences and Biotechnology,Beijing Forestry University,Beijing 100083
  • Received:2015-12-06 Published:2016-09-25 Online:2016-10-10

摘要: 杨树溃疡病是中国杨树人工林重大生物灾害之一,采用生物防治的方法控制杨树溃疡病是持续有效的手段。为了获取能够高效定殖并对杨树溃疡病菌有良好生防效果的拮抗菌株,通过引入强启动子(ermEp)构建了高表达绿色荧光蛋白(Green fluorescent protein,GFP)的重组质粒,进而通过接合实验将该质粒导入到链霉菌生防菌株SSD49,构建了绿色荧光蛋白标记菌株SSD49-pIJ8660Ep,利用荧光显微镜研究该生防菌在毛白杨组培苗中的定殖情况。结果表明,SSD49标记绿色荧光蛋白后没有影响其对杨树溃疡病病原菌的抑菌活性,标记菌株能够定殖于毛白杨组培苗的茎和叶中。成功将杨树溃疡病生防菌株SSD49进行了绿色荧光蛋白标记,并且该菌株在毛白杨组培苗中有一定的定殖能力。

关键词: 绿色荧光蛋白标记, 定殖, 链霉菌, 杨树溃疡病病原菌

Abstract: Poplar canker is one of the major biohazard of poplar plantation in China,and the sustained and effective method to control poplar canker is biological control. This study aims to obtain a strain which has solid bio-control effect on Botryosphaeria dothidea and can colonize in poplar efficiently. This study imported a strong promoter(ermEp)and constructed highly-expressed green fluorescent protein(GFP)recombinant plasmid,then led the plasmid into bio-control strain Streptomyces SSD49 through joint experiment,and constructed the GFP-tagged strain SSD49-pIJ8660Ep. Fluorescence microscope was used to study the colonization of this biocontrol strain in Populus tomentosa somaclone. Results showed that the GFP-tagged SSD49 didn’t affect its bacteriostatic activity against poplar canker pathogen and colonized in stems and leaves of P. tomentosa somaclone. This study successfully constructed the GFP-tagged strain SSD49,and the strain presented certain colonization in P. tomentosa somaclone.

Key words: green fluorescent protein marker, colonization, Streptomyces, Botryosphaeria dothidea