Genetically Modified (GM) Crops: An Overview

Why in news?

• The Union Ministry of Environment, Forest and Climate Change has amended the rules governing the selection of experts to the Genetic Engineering Appraisal Committee (GEAC), the apex technical body regulating genetically modified (GM) seeds in India.

What Are GM Crops?

• Genetically Modified (GM) crops are plants that have been altered at the DNA level to introduce new traits.
• These traits may include increased pest resistance, herbicide tolerance, disease resistance, or enhanced nutritional content.

Examples of Genetically Modified Crops:

• Bt Cotton: A widely grown GM crop engineered to resist pests like bollworms.
• GM Soybeans: Modified for herbicide tolerance, allowing farmers to control weeds more efficiently.
• GM Maize (Corn): Engineered for resistance to pests and tolerance to herbicides.
• GM Canola: Modified to withstand herbicides.
• Golden Rice: A GM crop enriched with beta-carotene (Vitamin A) to combat vitamin A deficiency.

Benefits of Genetically Modified Crops:

• Pest Resistance: GM crops such as Bt cotton contain genes from the Bacillus thuringiensis bacterium, which helps protect crops from pests, reducing reliance on chemical pesticides.
• Herbicide Tolerance: Crops engineered to resist specific herbicides, like glyphosate-resistant soybeans, provide effective weed control while reducing the need for manual weeding.
• Higher Yields: GM crops can increase agricultural productivity by reducing crop losses due to pests and diseases.
• Environmental Sustainability: GM crops can reduce the use of chemical pesticides, fertilizers, and tilling, helping preserve soil health and reduce environmental pollution.
• Drought and Stress Tolerance: Genetically modified crops can be engineered to withstand drought conditions, offering a solution to food security in water-scarce regions.
• Improved Nutritional Value: GM crops like Golden Rice have been developed to address nutritional deficiencies, improving health and food security.

Risks and Concerns of Genetically Modified Crops:

• Health Concerns: There are ongoing studies to assess whether GM crops might cause allergic reactions or long-term health issues, though many research findings suggest GM crops are safe to consume.
• Environmental Impact: The potential effects of GM crops on biodiversity, soil quality, and pollinators like bees remain under research, with concerns about unintended consequences.
• Pest Resistance Development: Over time, pests may evolve resistance to Bt toxins, diminishing the effectiveness of GM crops like Bt cotton.
• Gene Flow: There is concern that GM crop genes might transfer to wild plants or non-GM crops, potentially affecting genetic diversity.

Status of GM Crops in India:

• Bt Cotton: Commercialized in 2002, Bt Cotton has revolutionized cotton production in India, boosting yields and reducing the need for chemical pesticides.
• Bt Brinjal: Approved for field trials in 2009, the commercialization of Bt Brinjal faced a moratorium due to public concern but resumed in 2020 for testing.
• GM Mustard: GM Mustard is in the final stages of development but has not yet been approved for commercial cultivation in India.
• Other GM Crops: India is exploring the development of other GM crops like GM maize, chickpeas, and sugarcane to improve crop productivity and resilience.

Regulatory Framework for GM Crops in India:

• India’s regulatory system ensures that GM crops are safe for the environment and human health:
• GEAC (Genetic Engineering Appraisal Committee): The body responsible for evaluating the safety and approval of GM crops.
• RCGM (Review Committee on Genetic Manipulation): Monitors GM crop research and experimental trials.
• RDAC (Recombinant DNA Advisory Committee): Oversees biotechnology developments on a national and international level.
• SBCC (State Biotechnology Coordination Committee): Reviews GM crop safety at the state level and ensures compliance with safety standards.

Future of GM Crops:

• As biotechnology advances, the potential for GM crops to address global challenges such as climate change, food security, and malnutrition continues to grow.
• Ongoing research focuses on developing crops that are not only resistant to pests and diseases but also offer higher nutritional value and environmental benefits.
• Conclusion

  Genetically Modified (GM) crops are transforming agriculture by improving crop yields, reducing pesticide use, and offering environmental benefits. Despite concerns, GM technology has the potential to play a crucial role in addressing food security and environmental sustainability, especially in developing countries like India, which is actively researching and trialing various GM crops.