Establishment of regeneration system and transformation of Zm401 gene in Lilium longiflorum × L. formosanum

Lin Qiu-hua, Hong Bo, T. Zheng, Madlen Chao, Guan Ainong, Yu Jing-juan, Gao Junping
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引用次数: 10

Abstract

In vitro bulb scales of Lilium longiflorum × L. formosanum were used as the explants to develop a high efficient regeneration system. One hundred percent of regeneration rate was reached through organogenesis on the basal MS media supplement with 1.0 mg/L 6-BA and 1.0 mg/L NAA. And, a genetic transformation system for the lily was also developed using Agrobacterium tumefaciens-mediated method. 12‰ of genetic transformation rate was obtained according to the procedures: the explants were pre-cultured for 3 d, immersed into bacterial suspension (OD600≈0.8) for 5 min, and then co-cultivated for 5 d. The binary vector pBI121 containing Zm401, a maize pollen specific gene, was introduced into the Agrobacterium strain LBA4404 and transformed into the explants using the genetic transformation system, and the integration of the gene into lily genome was confirmed by PCR and PCR-Southern analysis. The results above can be as an important step to get new pollenless materials of lilies.
台湾百合再生体系的建立及Zm401基因的转化
以台湾百合(Lilium longiflorum × L. formosanum)鳞茎为外植体,建立了高效的再生体系。在添加1.0 mg/L 6-BA和1.0 mg/L NAA的基础MS培养基上进行器官发生,再生率达到100%。利用农杆菌介导的方法,建立了百合的遗传转化体系。按以下步骤获得12‰的遗传转化率:将外植体预培养3 d,浸入细菌悬浮液(OD600≈0.8)中5 min,共培养5 d。将含有玉米花粉特异性基因Zm401的二载体pBI121导入到农杆菌LBA4404中,利用遗传转化系统转化外植体,通过PCR和PCR- southern分析证实了该基因与百合基因组的整合。上述结果可作为获得百合新型无花粉材料的重要一步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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