GM Crops: The Edible Oil Deficit, DMH-11 & GEAC Regulations

1. THE EDIBLE OIL DEFICIT & GM MUSTARD (DMH-11)

Cue Words	Notes
Macroeconomic Edible Oil Deficit	India imports 159-165 Lakh Tonnes of edible oil annually (56-60% of domestic consumption), costing the exchequer over $10 Billion (~₹85,000 Crore). India's oilseed yield stands at ~1.2 Tonnes/Hectare, far below the global average of ~2.5 Tonnes/Hectare — making hybrid-vigor yield gains a high-priority national security target.
DMH-11 Mustard: The Barnase-Barstar System	Developed indigenously by Delhi University using the **Barnase-Barstar** genetic hybridisation system: **Barnase Gene** (from *Bacillus amyloliquefaciens*): induces male sterility in the maternal plant line. **Barstar Gene**: restores male fertility in the offspring hybrid seed, allowing normal self-pollination. **Bar Gene**: confers glufosinate-ammonium herbicide tolerance, used solely as a marker for seed selection. DMH-11 shows a **28%** yield advantage over national check variety Varuna, and **37%** over regional checks.
Regulatory & Legal Status (2022-26)	GEAC approved DMH-11's environmental release in October 2022 (valid 4 years), but the Supreme Court delivered a split verdict on the approval's validity and ordered status quo on further environmental release for seed production/testing — leaving DMH-11's commercial rollout in continuing legal limbo through 2025-26, even as field-trial data accumulates.

> **Summary**: DMH-11's Barnase-Barstar hybridisation technology offers a credible yield-based answer to India's edible-oil import burden, but its commercial future remains contested — caught between GEAC's scientific clearance and an unresolved Supreme Court challenge over the approval process itself.

2. BT COTTON SUCCESS & BT BRINJAL MORATORIUM

Cue Words	Notes
Bt Cotton: India's Only Commercial GM Crop	Introduced in 2002; incorporates ***Cry1Ac*** and ***Cry2Ab*** genes from *Bacillus thuringiensis* to secrete crystalline toxins that selectively kill the pink bollworm pest, cutting chemical pesticide use. Now covers **95%** of India's cotton acreage (**~12 Million Hectares**), scaling production from 13.6 Million bales (2002) to ~35 Million bales. **Refugia Strategy**: Sowing a non-GM cotton border around Bt fields to slow pest resistance development to the Bt toxin.
Bt Brinjal: Indefinite Moratorium	Developed using the Cry1Ac gene to resist shoot/fruit borers; despite receiving GEAC biosafety clearance, public and political opposition over food-chain safety led to an indefinite moratorium since February 2010 — illustrating that scientific clearance alone does not guarantee commercial release in India's GM crop politics.

> **Summary**: Bt Cotton is India's sole GM commercialisation success story, while Bt Brinjal — despite equivalent GEAC clearance — remains frozen since 2010, showing that political and public trust, not just biosafety science, ultimately govern India's GM crop trajectory.

3. REGULATORY ARCHITECTURE & SOCIOECONOMIC CONCERNS

Cue Words	Notes
Three-Tier Regulatory Hierarchy	**Institutional Biosafety Committee (IBSC)**: operates at the R&D-centre level, supervising lab safety. **Review Committee on Genetic Manipulation (RCGM)**: statutory body under DBT, monitors biosafety trials. **Genetic Engineering Appraisal Committee (GEAC)**: apex statutory body under MoEFCC (under EPA 1986), evaluates large-scale environmental trials and approves commercial release.
Socioeconomic & Ecological Concerns	**IPR Monopolies**: High seed costs and licensing constraints imposed by multinational seed corporations restrict farmer autonomy. **Genetic Contamination**: Outcrossing and horizontal gene transfer to wild/native crop varieties threatens indigenous gene pools and complicates coexistence with organic/non-GM farming.

> **Summary**: India's three-tier IBSC-RCGM-GEAC regulatory ladder is scientifically rigorous on paper, but socioeconomic concerns — seed-IPR monopolies and genetic-contamination risk — remain the deeper, harder-to-resolve objections driving continued public resistance to GM crop expansion.

4. CURRENT DEVELOPMENTS: SDN-EXEMPT GENOME EDITING & GLOBAL TRENDS (2025-26)

Cue Words	Notes
Genome-Edited Crops Bypass Traditional GM Scrutiny	DBT's SDN-1/SDN-2 genome-editing guidelines exempt foreign-DNA-free edited crops from GEAC's full biosafety trial regime, opening a faster regulatory pathway for yield/stress-tolerance traits that sidesteps the DMH-11/Bt Brinjal-style controversy over foreign transgenes. This has revived commercial interest in gene-edited (as opposed to transgenic) rice and pulse varieties from Indian public-sector institutes, positioning genome editing as the likely next phase of India's crop-biotechnology strategy.
Global Context	Countries including the US, UK, and several EU members have moved toward lighter-touch regulation for gene-edited (non-transgenic) crops through 2025-26, reinforcing the international trend of decoupling "genome editing" from "GMO" in regulatory treatment — a distinction India's SDN framework already anticipates.

> **Summary**: While transgenic crops like DMH-11 remain mired in litigation, India's SDN-exempt genome-editing pathway — aligned with a broader global regulatory shift — is emerging as the more politically viable route for the next generation of crop biotechnology.

Recent Gene-Editing Developments (2025-26)

Cue Words	Notes
NIPGR Phosphate-Uptake Rice	NIPGR scientists used CRISPR-Cas9 gene editing enhancing phosphate uptake/transport in japonica rice, leading to increased yield without compromising seed quality Phosphorus essential for plant growth; only 15-20% fertilizers absorbed by plants, rest lost through leaching/runoff Gene-edited plants quickly absorbed phosphate before it formed insoluble compounds with metals (aluminum, iron, calcium, magnesium) CRISPR can cause off-target events; team used prediction software, tested top 10 sites
Desi Genome Editing Technology (TnpB)	ICAR received patent for genome-edited technology deploying TnpB (Transposon-associated proteins)—"miniature alternative" to CRISPR-Cas technology for precise DNA cutting/tweaking of plants Similar to CRISPR-associated Cas9/Cas12a proteins, TnpB acts as "molecular scissors" cleaving gene DNA at predetermined target site, changing sequence TnpB only 408 amino acids long, sourced from extreme-environment-surviving bacterium Deinococcus radiodurans Represents indigenous gene-editing alternative reducing dependence on foreign CRISPR systems
BIRSA 101: Indigenous Gene Therapy	Government launched India's first indigenous CRISPR-based gene therapy for Sickle Cell Disease (particularly affects India's tribal population) Therapy named "BIRSA 101" dedicated to Bhagwan Birsa Munda (150th anniversary November 15) Precisely corrects mutations in genetic code causing disease Given as one-time infusion after which body should start producing normal red blood cells Same therapy usable for thalassaemia treatment

UPSC Mains PYQs

• GM Crops & Food Security: Assess the role of Genetically Modified (GM) crops in ensuring India's food security. Discuss the scientific and socioeconomic arguments for and against the commercial cultivation of GM Mustard (DMH-11) and Bt Cotton in India. (15 Marks, 250 Words)
• Bt Brinjal Moratorium: Critically examine why Bt Brinjal remains under moratorium despite GEAC clearance, while Bt Cotton was commercialised. What does this reveal about India's GM crop regulatory politics? (10 Marks, 150 Words)
• Genome Editing vs GMOs: Distinguish between transgenic GM crops and SDN-based genome-edited crops. Discuss the regulatory rationale for exempting the latter from full GEAC biosafety clearance. (10 Marks, 150 Words)

• DMH-11 is a genetically modified herbicide-tolerant (to Basta) hybrid mustard developed using the barnase, barstar, and bar genes sourced from a soil bacterium: the bar gene confers herbicide tolerance while barnase induces male sterility (enabling cross-pollination for hybrid seed production) and barstar restores fertility; its commercial release in India produced a split verdict from the Supreme Court.
• India's GM-crop biosafety governance operates through a multi-tier committee structure under the Environment Protection Act, 1986 (1989 Rules): the Recombinant DNA Advisory Committee (RDAC, advisory), Institutional Biosafety Committee (IBSC) and Review Committee on Genetic Manipulation (RCGM) (technical review), the Genetic Engineering Appraisal Committee (GEAC, final approval, chaired by the MoEFCC Secretary with 24 members and empowered to review/revoke approvals on new information, environmental damage, or non-compliance), and the State Biotechnology Coordination Committee (SBCC) and District Level Committee (DLC) for monitoring.
• Multiple ministries share GMO regulatory mandates in India: MoEFCC (environmental/human health safety before GMO/LMO release), Department of Biotechnology (nodal agency implementing the 1989 Rules and the Cartagena Protocol on Biosafety), Ministry of Agriculture/ICAR (agronomic-benefit and post-release performance monitoring of GM crops), FSSAI under the Ministry of Health (regulating genetically engineered foods), and the Central Board of Excise and Customs/Department of Revenue (GMO import-export policy via DGFT notifications).