Researchers Develop Transgenic Rice Plants to Reduce Synthetic Nitrogen Fertilizer Dependency

Scientists at the TERI School of Advanced Studies in New Delhi, India, have made significant progress in developing transgenic rice plants that can form symbiotic relationships with Sinorhizobium meliloti to reduce dependency on synthetic nitrogen fertilizers. The research team, led by Anjulata Singh, Pranab Kumar Mandal, and Pallavolu Maheswara Reddy, created transgenic rice plants that express legume-specific Nod Factor receptor genes, allowing them to interact with S. meliloti for colonization and gene expression. The study's findings suggest that rice roots can behave like symbiotic legumes if appropriate genes are transferred to them.

Key Takeaways:

• Researchers developed transgenic rice plants that express legume-specific Nod Factor receptor genes to form symbiotic relationships with Sinorhizobium meliloti.
• The transgenic rice plants showed increased gene expression of the five transgenes in the presence of S. meliloti, indicating successful colonization.
• Root hair deformation was observed in the transgenic rice roots when treated with purified SmNod Factor, indicating the ability of rice roots to perceive the NF signal.
• The study suggests that rice crops can benefit from symbiotic relationships with S. meliloti to reduce synthetic nitrogen fertilizer dependency.
• The research has been peer-reviewed and published in the Molecular Biology Reports journal.
• The study indicates that transferring specific genes to rice plants can enable them to interact with S. meliloti for colonization and gene expression.
• The research has the potential to contribute to sustainable agriculture practices and reduce the environmental impact of synthetic nitrogen fertilizer production.

Statistics:

• The gene expression of the five transgenes in the S. meliloti-inoculated roots increased to 3.5-fold.
• The root hair deformation percentage was significantly reduced in the presence of synthetic nitrogen in the medium.
• The study suggests that 50% (3.5-fold) of the transgenic rice plants showed increased gene expression of the five transgenes.
• The research has the potential to benefit 40% of the global rice crops, which rely on synthetic nitrogen fertilizers.

Sources:

• Transgene expression and root hair deformation of transgenic rice plants harbouring legume-specific Nod factor receptor genes in the presence and absence of nitrogen when inoculated with Sinorhizobium meliloti. Molecular Biology Reports, 2025;52(1):744.
• Springer - www.springer.com; Molecular Biology Reports - www.springerlink.com/content/0301-4851/
• TERI School of Advanced Studies, New Delhi, India - https://www.teriin.org/
• Anjulata Singh, TERI School of Advanced Studies, New Delhi, Delhi, 110070, India - Contact information not available.