India’s gene-edited rice is ready for the fields

Source: The post “India’s gene-edited rice is ready for the fields” has been created based on “India’s gene-edited rice is ready for the fields” published in “Business Line” on 21st August 2026.

UPSC Syllabus: GS 3- Indian Economy

Context: India is preparing to commercially introduce Pusa Rice DST1 in the upcoming rabi season, marking an important step in the application of genome-editing technology to agriculture. Along with DRR Dhan 100 (Kamala), it represents an attempt to improve productivity and climate resilience in rice cultivation.

Key developments

1. Pusa Rice DST1 has been developed by ICAR-IARI from the MTU1010 variety.
2. It involves SDN-1 genome editing of the Drought and Salt Tolerance (DST) gene to improve tolerance to drought and saline or alkaline soils.
3. Field trials reported 9.66%–30.4% yield advantages over MTU1010 under different saline and alkaline conditions.
4. DRR Dhan 100 (Kamala) was developed by ICAR-Indian Institute of Rice Research from Samba Mahsuri.
5. Its gene editing targets a gene involved in cytokinin metabolism, increasing grains per panicle.
6. Kamala matures in around 130 days, approximately 20 days earlier than Samba Mahsuri, and has stronger stems that reduce lodging.

Why does it matter?

1. The varieties can improve productivity and resource-use efficiency.
2. Pusa DST1 can help farmers cope with drought and soil salinity.
3. Kamala’s shorter duration can reduce the crop cycle and potentially conserve resources.
4. Climate-resilient varieties can strengthen India’s agricultural response to climate change.
5. Wider cultivation can potentially benefit farmers across several States, including Andhra Pradesh, Telangana, Karnataka, Tamil Nadu, Uttar Pradesh and West Bengal.

Gene editing versus GM crops

1. GM crops generally involve introducing genetic material from another organism into the plant.
2. Genome editing can make targeted changes in genes already present in the plant.
3. SDN-1 generally produces small insertions or deletions, while SDN-2 introduces a specific small change using a repair template.
4. SDN-3 can introduce a new genetic sequence and remains outside the exemption applicable to SDN-1 and SDN-2.
5. India’s 2022 guidelines exempted qualifying transgene-free SDN-1 and SDN-2 plants from the more rigorous regulatory process applicable to SDN-3.
6. Both new rice varieties are SDN-1 edited and transgene-free.

Concerns

1. The absence of foreign DNA does not automatically establish that the crop has no unintended effects.
2. Unintended mutations could potentially alter gene functioning, biochemistry, nutritional characteristics, toxins or allergens.
3. The reported yield gains need to be assessed across different environments and farming conditions.
4. High yield gains in one trait could involve trade-offs in other traits.
5. Wider scientific scrutiny is required regarding the mechanism behind the reported yield advantages.
6. Farmers and consumers need transparent information regarding biosafety, performance and long-term effects.
7. The experience of GM crops such as Bt cotton, Bt brinjal and GM mustard shows that technological adoption also involves ecological, regulatory and socio-economic concerns.

Regulatory and global context

1. The government states that the rice varieties underwent biosafety scrutiny for absence of foreign DNA, mutation stability and robustness of traits.
2. Each variety was reportedly tested at more than 50 locations during 2023–24.
3. India currently permits Bt cotton as its only GM crop for commercial cultivation.
4. Bt brinjal completed the regulatory process but was not commercially approved, while GM mustard received conditional environmental clearance and became subject to legal challenges.
5. Globally, countries are developing separate regulatory approaches for transgene-free gene-edited crops.
6. The US, Canada and Japan have permitted certain gene-edited crops or foods.
7. The UK introduced a separate precision-breeding framework, while the EU adopted a new framework for New Genomic Techniques in 2026, including a category for crops involving changes that could occur naturally.

Way forward

1. India should undertake long-term, multi-location field evaluation before large-scale adoption.
2. Regulatory decisions should be based on transparent and independently scrutinised scientific evidence.
3. Biosafety assessment should examine unintended mutations, nutritional changes, allergens and ecological effects.
4. Farmers should receive adequate information, extension support and access to quality seeds.
5. Public research institutions should make relevant scientific evidence available for wider peer and scientific scrutiny.
6. Regulation should remain risk-based and technology-neutral, distinguishing gene editing from transgenic GM technology without compromising biosafety.

Conclusion: Gene-edited rice can become an important tool for making Indian agriculture more productive, climate-resilient and resource-efficient. However, its success should not be judged only by higher yields. A combination of scientific transparency, rigorous biosafety assessment, multi-location testing, farmer participation and proportionate regulation is essential for ensuring that genome editing delivers sustainable benefits to Indian agriculture.

Question: “Gene-edited rice represents a significant opportunity for India to improve agricultural productivity and climate resilience, but its commercialisation must be accompanied by robust scientific assessment and regulatory oversight.” Discuss with reference to India’s gene-edited rice varieties.

Source: Business Line