Article
Nitrate-regulated auxin transport by NRT1.1 defines a mechanism for nutrient sensing in plants.
Developmental cell - 15 Jun 2010
Krouk Gabriel, Lacombe Benoît, Bielach Agnieszka, Perrine-Walker Francine, Malinska Katerina, Mounier Emmanuelle, Hoyerova Klara, Tillard Pascal, Leon Sarah, Ljung Karin, Zazimalova Eva, Benkova Eva, Nacry Philippe, Gojon Alain
Abstract excerpt
Nitrate is both a nitrogen source for higher plants and a signal molecule regulating their development. 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. However, the sensing mechanism is unknown. Herein we show that NRT1.1 not only transports nitrate but also facilitates uptake of the phytohormone auxin....
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