TY  - BOOK
AU  - Fu,Y.F.
AU  - Zhang,Z.W.
AU  - Yang,X.Y.
AU  - Wang,C.Q.
AU  - Lan,T.
AU  - Tang,X.Y.
AU  - Yuan,S.
TI  - Nitrate reductase is a key enzyme responsible for nitrogen-regulated auxin accumulation in Arabidopsis roots
KW  - NITRATE REDUCTASE
KW  - NITRATE TRANSPORTER NRT1.1
KW  - NITRATE SIGNALING
KW  - ROOT ARCHITECTURE REMODELING
KW  - AUXIN BIOSYNTHESIS AND TRANSPORT
N2  - Nitrate reductase (NR)is one of the key enzymes for plant nitrogen assimilation and root architecture remodeling. However, crosstalk between NR-mediated signaling and auxin-mediated root development in nitrogen-status responses has not been investigated in details before. In this study, root phenotype and auxin distribution in nia1/nia2 (nitrate reductase)double mutant and chl1-5 (nitrate transporter NRT1.1)mutant under different nitrogen availabilities were compared. The nia1/nia2 mutant showed very low expression levels of auxin biosynthetic/signaling genes and was insensitive to nitrogen changes. While the chl1-5 mutant showed a high NR activity with a high level of auxin in the meristematic zone and a weaker response to nitrogen changes, when compared with the wild-type plants. We firstly found that NR activity was roughly positive-correlated with the root auxin level, and there is a crosstalk between nitrate signaling and auxin signaling. The putative signaling pathways downstream of NR have been discussed
UR  - https://drive.google.com/file/d/1ALQzcnGE2KtUTmcyZuIp1CkF86z0m45T/view?usp=drivesdk
ER  -