New Genetic Tool Helps Improve Rice
August 20, 2010| |
Scientists at the USDA-ARS Crop Improvement and Utilization Research Unit in Albany, CA led by Roger Thilmony have recently discovered a tissue-specific promoter LP2. This gene fragment was found to direct the expression of the reporter genes in green photosynthesizing tissues, with the highest activity in the leaves and undetectable in the roots, seeds, and flower parts of genetically modified rice.
The use of LP2 promoter would allow therefore the expression of resistance genes against important diseases of rice such as rice blast and sheath blight only in the leaf, the highly susceptible part. The LP2 promoter could also be used to improve varieties of rice, barley and wheat and could aid in the development of biofuel crops, in which scientists need to control leaf traits without affecting other tissues, according to Thilmony.
The original news article can be viewed at http://www.ars.usda.gov/News/docs.htm?docid=1261
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