Event<br> T120-7 is sugar beet, Beta vulgaris ssp. vulgaris, containing a stably integrated gene<br> which encodes the enzyme phosphinothricin-N-acetyltransferase (PAT).  The PAT<br> enzyme catalyzes the conversion of L-phosphinothricin, the active ingredient in the<br> herbicide glufosinate-ammonium, to an inactive form, thereby conferring tolerance to<br> the herbicide.  The pat gene in event T120-7 is a synthetic version of the native gene<br> isolated from Streptomyces viridochromogenes.  The gene was introduced into sugar<br> beet calli using disarmed Agrobacterium tumefaciens.  Southern blot and polymerase<br> chain reaction (PCR) analyses confirm that the incorporation has been limited to DNA<br> sequences contained within the T-DNA borders and that event T120-7 contains a single,<br> stably integrated copy of the pat gene.