Gene Details:

• MSU gene ID: LOC_Os05g39540
• RAPdb gene ID: Os05g0472400 ,Os05g0472500
• Gene Symbol: OsZIP9
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The expression profiles of OsZIP5 and OsZIP9 overlap in the root epidermis and respond to the local Zn status in the root.
• The decreased Zn/Cd levels and growth retardation in the oszip5 mutant are less severe than in the OsZIP9 mutant.
• However, OsZIP9 is also regulated by systemic signals of Zn status from the shoot.
• The ZIP transporter family member OsZIP9 contributes to root Zn uptake in rice under Zn-limited conditions.
• Furthermore, OsZIP9 was expressed in the exodermis and endodermis of root mature regions.
• For plants grown in a hydroponic solution with low Zn concentration, knockout of OsZIP9 significantly reduced plant growth, which was accompanied by decreased Zn concentrations in both the root and shoot.
• Combined, these results indicate that OsZIP9 localized at the root exodermis and endodermis functions as an influx transporter of Zn and contributes to Zn uptake under Zn-limited conditions in rice.
• Expression pattern analysis showed that OsZIP9 was mainly expressed in the roots throughout all growth stages and its expression was up-regulated by Zn-deficiency.
• OsZIP9 was mainly localized to the plasma membrane and showed transport activity for Zn in yeast.
• Taken together, these results show that OsZIP9 is an important influx transporter responsible for uptake of Zn and Co from external media into root cells.
• OsZIP9 knockout rice plants showed a significant reduction in growth at low Zn concentration, but could be rescued by high Zn supply.
• Natural variation of OsZIP9 expression level is highly associated with Zn content in milled grain among rice varieties in the germplasm collection.
• A high activity zinc transporter OsZIP9 mediates zinc uptake in rice.

Function-related keywords:

• root ,  growth ,  shoot ,  epidermis ,  plant-growth ,  transporter ,  plasma-membrane ,  grain ,  zinc

Literature:

• ZINC TRANSPORTER5 and ZINC TRANSPORTER9 Function Synergistically in Zinc/Cadmium Uptake .  DOI:  10.1104/pp.19.01569 ;  PMID:  32341004
• The ZIP Transporter Family Member OsZIP9 Contributes To Root Zinc Uptake in Rice under Zinc-Limited Conditions .  DOI:  10.1104/pp.20.00125 ;  PMID:  32371522
• A high activity zinc transporter OsZIP9 mediates zinc uptake in rice .  DOI:  10.1111/tpj.14855 ;  PMID:  32449251
• Comparative transcriptome profile analysis of rice varieties with different tolerance to zinc deficiency .  DOI:  10.1111/plb.13227 ;  PMID:  33296551

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: