Co-Authors:
Srivastava, V., Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701, United States
Gidoni, D., The Inst. of Plant Sciences, ARO, The Volcani Center, POB 6, Bet Dagan 50250, Israel
Abstract:
Targeted integration of foreign genes into plant genomes is a much sought-after technology for engineering precise integration structures. Homologous recombination-mediated targeted integration into native genomic sites remained somewhat elusive until made possible by zinc finger nuclease-mediated double-stranded breaks. In the meantime, an alternative approach based on the use of site-specific recombination systems has been developed which enables integration into previously engineered genomic sites (site-specific integration). Follow-up studies have validated the efficacy of the site-specific integration technology in generating transgenic events with a predictable range and stability of expression through successive generations, which are critical features of reliable and practically useful transgenic lines. Any DNA delivery methods can be used for site-specific integration; however, best efficiency is mostly obtained with direct DNA delivery methods such as particle bombardment. Although site-specific integration approach provides unique advantages for producing transgenic plants, it is still not a commonly used method. The present article discusses barriers and solutions for making it readily available to both academic research and applicative use. © 2010 The Society for In Vitro Biology.
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