The invention discloses a genetic transformation method of blue pig ear, which relates to the technical field of genetic engineering and has the characteristics of simple operation and rapid and effective acquisition of transgenic plants. In the traditional Agrobacterium tumefaciens mediated transformation of blue pig ear, the surface active agent, Silwet L 77, has been added to reduce the surface tension of the leaves, make the Agrobacterium tumefaciens fully exposed to the wound of the leaves, and obtain a high efficiency of genetic transformation. Due to the traditional genetic transformation, the transgenic lines were obtained by inducing tufted buds with leaf discs, and the positive rate of resistant seedlings was low. This method used the method of callus induction to induce the cluster buds to obtain transgenic seedlings, which greatly increased the positive rate. This method optimizes the traditional genetic transformation process, shortens the transformation cycle and obtains a stable genetic transgenic plant. This excellent transformation system lays the foundation for the study of the cell and molecular mechanism of the double fertilization of angiosperms by means of genetic engineering.
【技术实现步骤摘要】
一种蓝猪耳遗传转化方法
本专利技术涉及转基因及组织培养
,特别涉及一种蓝猪耳遗传转化方法。
技术介绍
蓝猪耳(Toreniafournieri)又名夏堇,属双子叶植物门,合瓣花亚纲,玄参科蓝猪耳属。被子植物的胚囊大多数都是紧密包裹在胚珠珠心组织里,生殖过程的受精机理及代谢活动需借助经典结构植物学研究技术如半薄、超薄切片及组织透明法等[YouRLetal.,1985;JensenWAetal.,1965;Malamyetal.,1997],才能做进一步研究。若动态的观察被子植物受精过程中卵细胞的变化状态,蓝猪耳更为适合。蓝猪耳雌配子成熟的过程中,胚囊会从珠孔端伸出珠被组织之外。待卵器完全成熟,在光学显微镜下清晰可见。这种特殊的半裸露胚囊结构,为研究被子植物生殖生物学和发育生物学提供了很好的研究材料,对高等植物双受精机理和早期胚胎发育的研究具有重要的意义。完整的植物组织培养系统与根癌农杆菌介导的遗传转化系统组成了转基因植物构建的一般系统。蓝猪耳茎段和叶片在不同浓度的生长激素相配合的作用下可以诱导出根、芽和愈伤组织等植物器官:1/2MS、6-BA、NAA相结合可以诱导不定芽的产生,而MS、6-BA、2,4-D配合可诱导愈伤组织,生根培养基为1/2MS[Chlyahetal.,1973;Kamadaetal.,1979;佟晓楠等,2004;宾金华等,2004;李梅兰等;2005];同时花芽和胚也可以作为蓝猪耳组织培养的外植体诱导出植物组织[Tanimotoetal.,1981;Tanimotoetal.,1985]。Aida在1996年就对蓝猪耳分子育种进行 ...
【技术保护点】
一种蓝猪耳遗传转化方法,其特征在于,所述方法包括:(1)共培养阶段:将蓝猪耳无菌苗叶片剪成边长小于1cm的小片后,放入到OD600=0.7的菌液中5min;所述菌液中含有0.01%(v/v)Silwet L‑77、20μmol/LAS;然后将叶片转移至共培养培养基中23~25℃避光培养4~7天;共培养阶段所用的固体培养基成分是:MS;6‑BA 1.0mg/L;2,4‑D 0.1mg/L;AS 200μmol/L;(2)愈伤诱导阶段:将步骤1共培养之后的材料转移至愈伤诱导培养基上,23~25℃、8h黑暗16h光照培养,培养三周;愈伤诱导培养基基成分是:MS;6‑BA1.0mg/L;2,4‑D0.1mg/L;Kan200mg/L;Cef 300mg/L;(3)芽诱导阶段:将步骤2获得的抗性愈伤组织转移至芽诱导培养基上,23~25℃、8h黑暗16h光照培养7天,诱导出抗性芽,芽诱导培养基成分是:1/2MS;6‑BA1.0mg/L;IAA 0.1mg/L;Cef 300mg/L;(4)抗性芽筛选阶段:将步骤3培养后的材料转移至筛选抗性芽培养基上,23~25℃、8h黑暗16h光照培养三周,得到2 ...
【技术特征摘要】
1.一种蓝猪耳遗传转化方法,其特征在于,所述方法包括:(1)共培养阶段:将蓝猪耳无菌苗叶片剪成边长小于1cm的小片后,放入到OD600=0.7的菌液中5min;所述菌液中含有0.01%(v/v)SilwetL-77、20μmol/LAS;然后将叶片转移至共培养培养基中23~25℃避光培养4~7天;共培养阶段所用的固体培养基成分是:MS;6-BA1.0mg/L;2,4-D0.1mg/L;AS200μmol/L;(2)愈伤诱导阶段:将步骤1共培养之后的材料转移至愈伤诱导培养基上,23~25℃、8h黑暗16h光照培养,培养三周;愈伤诱导培养基基成分是:MS;6-BA1.0mg/L;2,4-D0.1mg/L;Kan200mg/L;Cef300mg/L;(3)芽诱导阶段:将步骤2获得的抗性愈伤组织转移至芽诱导培养基上,23~25℃、8h黑暗16h光照培养7天,诱导出抗性芽,芽诱导培养基...
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