India Develops New Crop Genome Editing

Exam-Focused Notes on Genome-Edited Crop Breeding Development in India

1. Technological Advances:

   • Indian scientists have developed a new genome-editing technology utilizing TnpB (Transposon-associated proteins) as an alternative to the CRISPR-Cas proteins.
   • TnpB proteins are significantly smaller (400-500 amino acids) compared to Cas9 (1,000-1,400 amino acids) and Cas12a (approximately 1,300 amino acids), enhancing DNA editing efficiency.

2. Patent and Intellectual Property:

   • The Indian Council of Agricultural Research (ICAR) was granted a patent for the new GE technology titled “Systems and Methods for Targeted Genome-Editing in Plants” on September 15, 2025, after filing on August 31, 2022.
   • An international patent application has been filed under the Patent Cooperation Treaty to extend protection globally.

3. Implications of Intellectual Property:

   • Existing CRISPR-Cas technologies are primarily held by foreign entities (Broad Institute and Corteva Agriscience), which creates barriers for commercial cultivation of GE crops due to licensing fees.
   • The indigenous TnpB-based technology aims to bypass these limitations and reduce dependency on foreign technology.

4. Scientific Validation:

   • The effectiveness of TnpB has been validated through scientific publications in journals such as Plant Biotechnology, ChemistryEurope, and Nature India.
   • The new system enhances crop yields and resilience, allowing for advancement in sustainable agriculture without foreign restrictions.

5. Comparison between GE and GM:

   • Genome Editing (GE) involves making precise alterations to natural genes in plants but does not introduce foreign DNA, contrasting with Genetic Modification (GM) methods that involve inter-species gene transfers.

6. Noteworthy Developments in Rice Varieties:

   • ICAR has released two GE rice varieties in May 2025:
     1. IIRR Variety: Edited the 'cytokinin oxidase 2' gene in Samba Mahsuri rice for increased paddy yields.
     2. IARI Variety: Edited 'DST gene' in MTU-1010 rice for drought and salinity tolerance.

7. Negotiations and Future Potential:

   • ICAR is in advanced negotiations with Corteva and Broad Institute regarding the commercial licensing of CRISPR technologies for small and marginal farmers.
   • The development of TnpB provides India with the ability to pursue GE crop breeding independently, thereby addressing concerns related to foreign control over biotechnology.

8. Environmental and Agricultural Significance:

   • This advancement may enhance food security and sustainable agricultural practices in India, allowing for increased productivity and resilience of crops against climate change impacts.

9. Research and Development Support:

   • Ongoing efforts to encourage the adoption of the TnpB genome editing system among plant biotechnologists and breeders are crucial for practical applications in agriculture.

10. Conclusion:

• The TnpB genome editing technology represents a significant shift towards self-reliance in agricultural biotechnology in India, promoting innovation without the encumbrance of foreign patent restrictions. This shift aligns with national goals of enhancing agricultural productivity sustainably.

These notes encapsulate the technological, economic, and policy-related changes stemming from India's advancements in genome editing for agriculture, making it relevant for exam preparations.