We saw ubi3 go to work in wounded and nonwounded tissue alike, even in leaves, for example. So far, Belknap has shipped the promoter to more than three dozen labs in the United States and abroad. It seems to be a good all-purpose promoter for switching a gene on and leaving it on. To home in on the ubi3 and ubi7 genes, Belknap used a ubiquitin-seeking molecular probe from Peter H. Quail of the University of California at Berkeley and ARS Plant Gene Expression Center at Albany. The probe derives from the ubiquitin1 gene that was discovered by Quail, former Albany colleague Alan H. Christensen, and others.
Potatoes are America's most popular vegetable.
Click here to see this issue's table of contents.