Abstract
Reduce the amounts of nitrogen fertilizers and finding varieties with a high nitrogen use efficiency are the main objectives of plant nutrition. A large part of the nitrogen (N) applied to the soil in order to maximize production is lost by leaching to the groundwater, lakes and rivers or to atmosphere by volatilization causing serious environmental impacts and and high production costs. Among the strategies to increase NUE in the present work we propose to overexpression the nitrate transporter OsNPF4.11 in rice. Transformed OsNPF4.11 lines were grown in nutrient solution containing 0.2 mM N-NO3-. It was observed that the transgenic plants had a greater NO3- accumulation in the root affecting the plants growth, which presented a lower shoot dry mass and a less developed root system.
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