On September 21, 2026, the Animal and Plant Health Inspection Service, an agency within the U.S. Department of Agriculture, announced a crucial step in the federal oversight of genetically engineered crops. APHIS published a notice of availability in the Federal Register, inviting public comment on a petition submitted by Bayer U.S.-Crop Science. Bayer is seeking a determination of nonregulated status for its new variety of cotton, MON 89151, which has been genetically engineered to provide inherent protection against feeding damage from certain insect pests.
The Science Behind MON 89151 Cotton
MON 89151 is a genetically engineered variety of Upland cotton (Gossypium hirsutum). Its development represents a targeted approach to pest management. Through genetic modification, this cotton expresses three distinct insecticidal proteins: Vip3Cb1.1, Cry1Da_7, and Cry1B.3. These proteins are specifically designed to be toxic to lepidopteran pests, which are a group of insects that includes various moths and butterflies whose larval stages, such as caterpillars, can cause significant damage to cotton crops. By producing these proteins, the cotton plant itself acts as a defense mechanism, reducing the need for external insecticide applications targeting these particular pests. This innovation aims to enhance crop protection and potentially reduce environmental impacts associated with traditional pesticide use.
The Regulatory Pathway to Nonregulated Status
The regulatory journey for genetically engineered organisms in the United States falls primarily under the purview of APHIS, specifically guided by the plant pest provisions of the Plant Protection Act and regulations outlined in 7 CFR part 340. Under these rules, any organism or product altered through genetic engineering that is considered a "plant pest" or has the potential to be one, is deemed a "regulated article." This classification necessitates federal oversight regarding its introduction, interstate movement, or release into the environment.
For a genetically engineered product to move beyond this regulated status, its developer must submit a petition to APHIS requesting a determination of nonregulated status. This petition must demonstrate that the altered organism no longer poses a plant pest risk. APHIS then conducts a thorough review, which includes its own assessment known as a plant pest risk assessment or PPRA. The PPRA evaluates the potential pest risks of the genetically engineered organism compared to its nonmodified counterpart.
Bayer's Petition and APHIS's Initial Findings
Bayer U.S.-Crop Science submitted petition number 25-323-01p to APHIS, asserting that MON 89151 cotton is unlikely to pose a plant pest risk. In support of its petition, Bayer provided data indicating the safety and efficacy of the genetically engineered traits. As part of its due diligence, APHIS has developed a draft PPRA. This draft assessment specifically compared the pest risk of MON 89151 to that of the conventional, nonmodified cotton from which it was derived. Significantly, APHIS's draft PPRA concluded that MON 89151 is unlikely to pose an increased plant pest risk compared to its nonmodified predecessor. This preliminary finding is a critical step towards deregulation.
Public Engagement and Future Implications
In accordance with federal regulations, APHIS has opened a 60-day public comment period on Bayer's petition and its own draft plant pest risk assessment. This period will conclude on November 20, 2026. APHIS is particularly interested in receiving comments related to biological or ecological issues, and it encourages the submission of scientific data, studies, or research to support any feedback provided. Comments can be submitted electronically via regulations.gov or through postal mail. This public comment phase is a cornerstone of transparent governance, allowing stakeholders, scientists, and the general public to contribute to the regulatory decision-making process.
Following the close of the comment period, APHIS will meticulously review and evaluate all submitted information, alongside other relevant data. Based on this comprehensive review, APHIS will make a final determination on Bayer's petition, either approving or denying the request for nonregulated status. APHIS will then post its final regulatory determination on its website and publish a notice of availability in the Federal Register. An approval would mean that MON 89151 cotton could be cultivated and moved freely in the United States without specific APHIS permits, subject to other applicable federal and state regulations. This development represents an ongoing intersection of agricultural innovation, scientific assessment, and public policy, shaping the future of crop production and pest management.
