Event Name: 98140

Event Code : DP-Ø9814Ø-6
Trade Name:
Optimum™ GAT™

Crop: Zea mays L. - Maize, Corn

Developer: DuPont (Pioneer Hi-Bred International Inc.)

Method of Trait Introduction: Agrobacterium tumefaciens-mediated plant transformation

GM Traits: Glyphosate herbicide tolerance , Sulfonylurea herbicide tolerance

Commercial Trait: (StackedHerbicide Tolerance (HT)


Basic Genetic Modification

Gene Introduced Gene Source Product Function
zm-hra Zea mays herbicide tolerant acetolactase synthase (als) enzyme confers tolerance to acetolactate synthase-inhibiting herbicides such as sulfonylurea and imidazolinone
gat4621 Bacillus licheniformis glyphosate N-acetyltransferase enzyme catalyzes the inactivation of glyphosate, conferring tolerance to glyphosate herbicides


Regulatory Approvals: Country, Year and Type of Approval

Country Food
direct use or processing
direct use or processing
domestic or non-domestic use
New Zealand      
South Korea      
United States      

Last updated: June 14, 2013


Documents and Links

Event Description

Regulatory and Biosafety Information

Detection Methods