§ 180.1249 - Hygromycin B phospho-transferase (APH4) marker protein and the genetic material necessary for its production in all plants; exemption from the requirement of a tolerance.

Hygromycin B phosphotransferase (APH4) and the genetic material necessary for its production in all plants are exempt from the requirement of a tolerance when used as a plant-incorporated protectant inert ingredient in cotton. “Genetic material necessary for its production” means the genetic material which comprise genetic material encoding the APH4 protein and its regulatory regions. “Regulatory regions” are the genetic material that control the expression of the genetic material encoding the APH4 protein, such as promoters, terminators, and enhancers.

Effective Date Note:

At 72 FR 20434, 20435, Apr. 25, 2007, § 180.1249 was redesignated as § 174.526 and revised, effective July 24, 2007. For the convenience of the user, the revised text is set forth as follows:

§ 174.526Hygromycin B phosphotransferase (APH4) marker protein in all plants; exemption from the requirement of a tolerance.

Residues of the Hygromycin B phosphotransferase (APH4) enzyme in all plants are exempt from the requirement of a tolerance when used as a plant-incorporated protectant inert ingredient in cotton.