Agrobacterium-mediated transformation of gypsophila (Gypsophila paniculata L.)

被引:0
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作者
Michal Moyal Ben Zvi
Amir Zuker
Marianna Ovadis
Elena Shklarman
Hagit Ben-Meir
Shamir Zenvirt
Alexander Vainstein
机构
[1] The Hebrew University of Jerusalem,The Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences
来源
Molecular Breeding | 2008年 / 22卷
关键词
Genetic transformation; Gypsophila; Ornamentals;
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摘要
As a major contributor to the flower market, Gypsophila paniculata is an important target for the breeding of new varieties. However, gypsophila breeding is strongly hampered by the sterility of this species’ genotypes and the lack of a genetic-transformation procedure for this genus. Here we describe the establishment of a transformation procedure for gypsophila (Gypsophila paniculata L.) based on Agrobacterium inoculation of highly regenerative stem segments. The transformation procedure employs stem explants derived from GA3-pretreated mother plants and a two-step selection scheme. The GA3 treatment was crucial for obtaining high gene-transfer frequencies (75–90% GUS-expressing explants out of total inoculated explants), as shown using three different gypsophila varieties. An overall transformation efficiency of five GUS-expressing shoots per 100 stem explants was demonstrated for cv. Arbel. The applicability of the transformation system to gypsophila was further reinforced by the generation of transgenic plants expressing Agrobacterium rhizogenesrolC driven by a CaMV 35S promoter. Transgenic gypsophila plantlets exhibited extensive rooting and branching, traits that could be beneficial to the ornamental industry.
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