Journal
TRENDS IN PLANT SCIENCE
Volume 17, Issue 8, Pages 458-467Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2012.04.006
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Funding
- National Science Council [NSC 100-2321-B-001-013, NSC 100-2311-B-001-004-MY3]
- Academia Sinica Postdoctoral Fellows Program
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Plants need to acquire nitrogen (N) efficiently from the soil for growth. Nitrate is one of the major N sources for higher plants. Therefore, nitrate uptake and allocation are key factors in efficient N utilization. Membrane-bound transporters are required for nitrate uptake from the soil and for the inter- and intracellular movement of nitrate inside the plants. Four gene families, nitrate transporter 1/peptide transporter (NRT1/PTR), NRT2, chloride channel (CLC), and slow anion channel-associated 1 homolog 3 (SLAC1/SLAH), are involved in nitrate uptake, allocation, and storage in higher plants. Recent studies of these transporters or channels have provided new insights into the molecular mechanisms of nitrate uptake and allocation. Interestingly, several of these transporters also play versatile roles in nitrate sensing, plant development, pathogen defense, and/or stress response.
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