Title: A new selection marker for plant transformation
Authors: Leyman, Barbara
Avonce, Nelson
Ramon, Matthew
Van Dijck, Patrick
Thevelein, Johan
Iturriaga, Gabriel # ×
Issue Date: 2004
Series Title: Methods in Molecular Biology vol:267 pages:385-396
Abstract: A number of systems to insert foreign DNA into a plant genome have been developed so far. However, only a small percentage of transgenic plants are obtained using any of these methods. Stable transgenic plants are selected by co-introduction of a selectable marker gene, which in most cases are genes that confer resistance against antibiotics or herbicides. In this chapter we describe a new method for selection of transgenic plants after transformation. The selection agent used is the nontoxic and common sugar glucose. Wild-type Arabidopsis thaliana plantlets that have been germinated on glucose have small white cotyledons and remain petite because the external sugar switches off the photosynthetic mechanism. The selectable marker gene encodes the essential trehalose-6-phophate synthase, AtTPS1, that catalyzes the first reaction of the two-step trehalose synthesis. Upon ectopic expression of AtTPS1 driven by the 35S promoter, transformed Arabidopsis thaliana plants became insensitive to glucose in comparison to wild-type plants. After transformation using AtTPS1 as a selection marker and 6% glucose as selection agent it is possible to single out the green and normal sized transgenic plants amid the nontransformed plantlets.
ISSN: 1064-3745
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Molecular Cell Biology (-)
Molecular Microbiology and Biotechnology Section - miscellaneous (-)
Molecular Physiology of Plants and Micro-organisms Section - miscellaneous
× corresponding author
# (joint) last author

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