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Plant Cell Advance Online Publication Published on May 31, 2007; 10.1105/tpc.107.050542
Received January 18, 2007 The Arabidopsis ATNRT2.7 Nitrate Transporter Controls Nitrate Content in Seeds
1 Institut National de la Recherche Agronomique, Institut Jean-Pierre Bourgin, Unité de la Nutrition Azotée des Plantes, F-78000 Versailles, France * To whom correspondence should be addressed. E-mail: vedele{at}versailles.inra.fr.
In higher plants, nitrate is taken up by root cells where Arabidopsis thaliana NITRATE TRANSPORTER2.1 (ATNRT2.1) chiefly acts as the high-affinity nitrate uptake system. Nitrate taken up by the roots can then be translocated from the root to the leaves and the seeds. In this work, the function of the ATNRT2.7 gene, one of the seven members of the NRT2 family in Arabidopsis, was investigated. High expression of the gene was detected in reproductive organs and peaked in dry seeds.
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