摘要
用LBA4404/pCDH,Agl1/pUNN2和AglO(无质粒)3种菌株分别转化小麦品种济南177、99P、核生3号幼胚诱导的愈伤组织以及济南177的幼胚.其中以胚性愈伤组织为外植体,获得了转基因植株.PCR和PCR-Southern分析证实转化植株中包含了外源基因.通过染色体分析,发现胚性愈伤组织在农杆菌LBA4404侵染后形成的染色体削减比经Agl1侵染和未经感染的对照形成的染色体削减程度更大,甚至发现较多的染色体断片.分析了农杆菌菌株,材料的基因型,外植体类型,培养时间和温度以及筛选的时间和周期对于转化效率的影响.
Immature embryos and embryogenic calli of wheat( Triticum aestivian L.) cultivars Jinanl77, 99P and Hesheng 3 were infected by three types of Agrobacterium LBA4404/pCDH, Agll/pUNN2 and AglO without plasmid. Transgenic plants regenerated only from embryogenic calli. PCR and PCR-Southern hybridization confirmed that transgenic plants contained foreign genes. Chromosomes of embryogenic calli infected were analysis. The elimination and breakage were more severe in the calli infected by LBA4404 than by AglO or control without infected.The factors impacted on transformation efficiency were also researched, including Agrobacterium types, wheat genotypes,explant types and period of selection etc.
出处
《山东大学学报(理学版)》
CAS
CSCD
北大核心
2004年第3期104-110,115,共8页
Journal of Shandong University(Natural Science)
基金
国家转基因专项资助项目(J99-037)
关键词
小麦
农杆菌转化
染色体消减和断裂
转基因植株
转化效率
Wheat
transformation by Agrobacterium tumefacien
chromosome elimination and fragmentation
transgenic plants
transformation efficiency