BIOLISTIC TRANSFORMATION OF CHRYSANTHEMUM WITH THE NUCLEOCAPSID GENE OF TOMATO SPOTTED WILT VIRUS

被引:29
作者
YEPES, LM [1 ]
MITTAK, V [1 ]
PANG, SZ [1 ]
GONSALVES, C [1 ]
SLIGHTOM, JL [1 ]
GONSALVES, D [1 ]
机构
[1] UPJOHN CO, MOL BIOL UNIT 7242, KALAMAZOO, MI 49007 USA
关键词
D O I
暂无
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In vitro regeneration and biolistic transformation procedures were developed for several commercial chrysanthemum Dendranthema grandiflora Tzvelev, syn. Chrysanthemum morifolium Ramat. cultivars using leaf and stem explants. Studies on the effect of several growth regulators and kanamycin on chrysanthemum regeneration were conducted, and a step-wise procedure to optimize kanamycin selection and recovery of transgenic plants was developed. A population of putative transformed chrysanthemum plants cvs. Blush, Dark Bronze Charm, Iridon, and Tara, was obtained after bombardment with tungsten microprojectiles coated with the binary plasmid pBIN19 containing the nucleocapsid (N) gene of tomato spotted wilt virus (TSWV) and the marker gene neomycin phosphotransferase (NPT II). PCR analysis of 82 putative transgenic plants selected on kanamycin indicated that the majority of the lines (89%) were transformed and contained both genes (71%). However, some transgenic lines contained only one of the genes: either the NPT II (15%) or the TSWV (N) gene (14%). Southern blot analysis on selected transgenic lines confirmed the integration of the TSWV (N) gene into the chrysanthemum genome. These results demonstrate the development of an efficient procedure to transfer genetic material into the chrysanthemum genome and selectively regenerate transgenic chrysanthemum plants at frequencies higher than previously reported.
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页码:694 / 698
页数:5
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