Regulatory and Ethical Considerations in Plant Genome Editing

Abstract

Plant genome editing, particularly via clustered regularly interspaced short palindromic repeats (CRISPR)/Cas systems, is rapidly reshaping agricultural biotechnology by enabling precise, efficient, and cost-effective improvement of yield, stress tolerance, disease resistance, and nutritional quality—often without introducing foreign DNA. Yet, realizing these benefits requires governance that balances innovation with biosafety, ethics, public confidence, and trade compatibility. This chapter summarizes international reference instruments, including the Cartagena Protocol on Biosafety and Codex Alimentarius guidance for food safety assessment, and contrasts divergent national approaches. Product-based frameworks (e.g., the United States, China, and several South American countries) regulate crops largely by the characteristics of the final product and can accelerate commercialization when edits mirror outcomes achievable through conventional breeding. In contrast, process-based systems (notably the European Union following the 2018 ECJ ruling, and jurisdictions with unresolved classifications such as India and parts of Africa) often place genome-edited crops under genetically modified organism (GMO)-style oversight, increasing approval time and costs and complicating international trade. Beyond classification, we synthesize ethical and societal issues including biodiversity protection, gene flow to wild relatives, off-target or unintended metabolic changes, long-term ecological effects, and equity concerns linked to intellectual property, corporate concentration, and seed sovereignty. We also discuss labeling options (mandatory vs. voluntary) and the importance of transparent public engagement to address persistent conflation of gene editing with transgenic GMOs. We conclude with policy recommendations for science-based, risk-proportionate regulation, harmonized safety standards, postrelease monitoring, and inclusive governance to ensure that genome editing advances food security and sustainability while safeguarding environmental and social values. Capacity building in low-income regions is essential.