Title : Nitrate-regulated auxin transport by NRT1.1 defines a mechanism for nutrient sensing in plants.

Pub. Date : 2010 Jun 15

PMID : 20627075






10 Functional Relationships(s)
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1 Nitrate-regulated auxin transport by NRT1.1 defines a mechanism for nutrient sensing in plants. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
2 In Arabidopsis, the NRT1.1 nitrate transporter is crucial for nitrate signaling governing root growth, and has been proposed to act as a nitrate sensor. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
3 In Arabidopsis, the NRT1.1 nitrate transporter is crucial for nitrate signaling governing root growth, and has been proposed to act as a nitrate sensor. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
4 Herein we show that NRT1.1 not only transports nitrate but also facilitates uptake of the phytohormone auxin. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
5 Moreover, nitrate inhibits NRT1.1-dependent auxin uptake, suggesting that transduction of nitrate signal by NRT1.1 is associated with a modification of auxin transport. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
6 Moreover, nitrate inhibits NRT1.1-dependent auxin uptake, suggesting that transduction of nitrate signal by NRT1.1 is associated with a modification of auxin transport. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
7 Moreover, nitrate inhibits NRT1.1-dependent auxin uptake, suggesting that transduction of nitrate signal by NRT1.1 is associated with a modification of auxin transport. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
8 Moreover, nitrate inhibits NRT1.1-dependent auxin uptake, suggesting that transduction of nitrate signal by NRT1.1 is associated with a modification of auxin transport. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
9 Mutation of NRT1.1 enhances both auxin accumulation in lateral roots and growth of these roots at low, but not high, nitrate concentration. Nitrates nitrate transporter 1.1 Arabidopsis thaliana
10 Thus, we propose that NRT1.1 represses lateral root growth at low nitrate availability by promoting basipetal auxin transport out of these roots. Nitrates nitrate transporter 1.1 Arabidopsis thaliana