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Plant Cell Rep. 2006 Oct;25(10):1043-51. Epub 2006 May 30.

In vitro regeneration and Agrobacterium-mediated genetic transformation of Euonymus alatus.

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  • 1Department of Plant Science, University of Connecticut, Storrs, CT 06269, USA. yi.li@uconn.edu


An in vitro plant regeneration method and an Agrobacterium tumefaciens-mediated genetic transformation protocol were developed for Euonymus alatus. More than 60% of cotyledon and 70% of hypocotyl sections from 10-day-old seedlings of E. alatus produced 2-4 shoots on woody plant medium (WPM) supplemented with 5.0 mg/l 6-benzylaminopurine (BA) plus 0.2 mg/l alpha-naphthalene acetic acid (NAA), and 77% of shoots produced roots on WPM medium with 0.3 mg/l NAA and 0.5 mg/l Indole-3-butyricacid (IBA). On infection with Agrobacterium tumefaciens strain EHA105 harboring a gusplus gene that contained a plant recognizable intron from the castor bean catalase gene to ensure plant-specific beta-glucuronidase (GUS) expression, 16% of cotyledon and 15% of hypocotyl explants produced transgenic shoots using kanamycin as a selection agent, and 67% of these shoots rooted. Stable insertion of T-DNA into the host genome was determined with organ- and tissue-specific expression of the gusplus gene and further confirmed with a PCR-based molecular analysis.

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