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US 5,750,870 AGranted
Plant genetic transformation methods and transgenic plants
AssigneeAgritope, Inc.
InventorsHelena V. Mathews, Richard Keith Bestwick, Adolph J. Ferro
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Abstract
An efficient transformation system for plants has been developed that yields high transformation efficiencies and pure transgenic plants. Genomic integration of transgenes was confirmed by genomic DNA hybridization analysis. Pure transgenic plants have been successfully established in soil.
Claims20
A method for producing a stably transformed raspberry or strawberry plant, comprising:
- (i) introducing into cells of explant tissue from a target raspberry or strawberry plant to be transformed, an expression vector containing a selectable marker gene operably linked to a plant compatible-promoter,
- (ii) culturing said tissues from (i) in selection media having a threshold concentration of selective agent effective to discriminate between plant cells transformed with the vector and non-transformed cells, based on their ability to grow in the media,
- (iii) selecting tissues based on their growth characteristics in the selection media,
- (iv) regenerating the selected tissues in the presence of a selective agent whose concentration is effective to discriminate between transformed and non-transformed plant cells, based on the cells's ability to produce regenerated tissue,
- (v) selecting transformed regenerated tissue generated in (iv),
- (vi) obtaining an explant from the selected, transformed regenerated tissue, and
- (vii) repeating steps (iv) and (v) at least one time, until stably transformed regenerated tissue is obtained, where step (vi) precedes each repeat cycle.
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