Article
High-affinity nitrate transport in roots of Arabidopsis depends on expression of the NAR2-like gene AtNRT3.1.
Plant physiology - 1 Mar 2006
Okamoto Mamoru, Kumar Anshuman, Li Wenbin, Wang Ye, Siddiqi M Yaeesh, Crawford Nigel M, Glass Anthony D M
Abstract excerpt
The NAR2 protein of Chlamydomonas reinhardtii has no known transport activity yet it is required for high-affinity nitrate uptake. Arabidopsis (Arabidopsis thaliana) possesses two genes, AtNRT3.1 and AtNRT3.2, that are similar to the C. reinhardtii NAR2 gene. AtNRT3.1 accounts for greater than 99% of NRT3 mRNA and is induced 6-fold by nitrate. AtNRT3.2 was expressed constitutively at a very low level and did not...
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