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Author Wang W., Hu B., Li A., Chu C.
Title NRT1.1 in plants: functions beyond nitrate transporter.
Abstract:
Arabidopsis AtNRT1.1 (CHL1/AtNPF6.3) is the first identified nitrate transporter in plants and initially featured in nitrate uptake and transport. It is also found that AtNRT1.1 displays auxin transport activity and thus mediates nitrate-modulated root development, suggesting that it has transport capacities of multiple substrates. Subsequent work revealed that AtNRT1.1 can respond to the environmental nitrate fluctuation via altering its nitrate transport activity modulated by phosphorylation, leading to the critical finding that AtNRT1.1 actually acts as a transceptor for nitrate sensing. Recent studies further revealed how OsNRT1.1B, the functional homologue of AtNRT1.1 in rice, mediates the nitrate signal transduction from the plasma membrane to the nucleus, and how OsNRT1.1B integrates nitrate and phosphate signaling network. It is also shown that OsNRT1.1B is involved in regulating the root microbiota to facilitate organic nitrogen mineralization in soil, thus mediating the plant-microbe interaction. Furthermore, the divergent functions of rice OsNRT1.1A and OsNRT1.1B in regulating nitrogen utilization suggest that the function of NRT1.1 is still far from fully understood. In this review, we focus on the most recent progress on molecular mechanisms of NRT1.1s in plants, with the aim to provide an evolved view for the versatile functions of NRT1.1 in nitrogen utilization in plants.
Journal J. Exp. Bot.
Country China
Volume
Pages
Year 2019
PubMed ID 31832669
PubMed Central ID -
DOI 10.1093/jxb/erz554
URL -
Relation
Gene NBIP1 NLP3 NPF6.3 NPF6.5 NRT1.1C PHR2 SPX4
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase