NRT2.3b: Enhanced Yield and Nitrogen Use

Tech ID: 12.546 & 16.614

Key Features

• Key to plant pH homeostasis
• Plus 3-6x enhanced iron uptake
• Proven to increase yield in rice field trials
• Shown to work in tobacco and Arabidopsis
• Suitable to deploy to crop species
• Now available as non-transgenic mutant rice line

Description

Proven to increase yield in extensive rice field trials.  Far reaching effects on plant performance via unexpected key role in pH homeostasis, plus 3-6x enhanced iron uptake.  Shown to work in tobacco and Arabidopsis.  Suitable to deploy to crop species. Update: The inventors have generated non-transgenic mutants of rice with high expression of the OsNRT2.3b gene – directly available for conventional breeding (Tech ID 16.614).

For further detailed information please download the non-confidential summary pdf.

Patents

Published: WO/2014/122452; EP2954059; CN 104995304A; TH 174914

Granted: US 9,012,721; MX 356051; ID P-00201504655; PH 1-2015-501712; VN 26897

References

Xiaorong Fan et al (2016).  Overexpression of a pH-sensitive nitrate transporter in rice increases crop yields.  PNAS; 113(26): 7118-7123.  https://doi.org/10.1073/pnas.1525184113

Bingbing Luo et al (2020).  Overexpression of the High-Affinity Nitrate Transporter OsNRT2.3b Driven by Different Promoters in Barley Improves Yield and Nutrient Uptake Balance.  Int J Mol Sci; 21(4): 1320; https://doi.org/10.3390/ijms21041320

Yong Zhang et al (2022).  OsTBP2.1, a TATA-Binding Protein, Alters the Ratio of OsNRT2.3b to OsNRT2.3a and Improves Rice Grain Yield.  Int J Mol Sci; 23(18): 10795.  https://doi.org/10.3390/ijms231810795