Gene Details:

• MSU gene ID: LOC_Os05g37470
• RAPdb gene ID: Os05g0447200
• Gene Symbol: OsAUX3
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• OsAUX3 expression in PRs, LRs and RHs further supports that OsAUX3 plays a critical role in the regulation of root development.
• OsAUX3 is upregulated in the root apex under aluminium (Al) stress and OsAUX3-2 is insensitive to Al treatments.
• Auxin concentrations, Al contents and Al-induced reactive oxygen species (ROS)-mediated damage in OsAUX3-2 under Al stress are lower than in WT, indicating that OsAUX3 is involved in Al-induced inhibition of root growth.
• OsAUX3 locates at the plasma membrane and functions as an auxin influx carrier affecting acropetal auxin transport.
• RNA-sequencing, gene expression quantification, dual-luciferase reporter assay, chromatin immunoprecipitation-quantitative polymerase chain reaction, and yeast one-hybrid assay demonstrated that OsARF6 is an upstream transcription factor of OsAUX3.
• OsARF6 directly binds to the auxin response elements of the OsAUX3 promoter, covering a single nucleotide polymorphism site between 9311 and NPB/Dongjin/Hwayoung, thereby controlling GL by altering longitudinal expansion and auxin distribution/content in glume cells.
• Herein, a quantitative trait locus qGL5 for grain length (GL) and GW was identified in recombinant inbred lines of 9311 and Nipponbare (NPB), and fine mapped to a candidate gene, OsAUX3.

Function-related keywords:

• root ,  growth ,  development ,  root-development ,  auxin ,  stress ,  auxin-transport ,  plasma-membrane ,  reactive-oxygen-species ,  aluminium ,  transcription-factor ,  grain ,  grain-length ,  auxin-response

Literature:

• The auxin influx carrier, OsAUX3, regulates rice root development and responses to aluminium stress .  DOI:  10.1111/pce.13478 ;  PMID:  30399648
• A novel miR167a-OsARF6-OsAUX3 module regulates grain length and weight in rice .  DOI:  10.1016/j.molp.2021.06.023 ;  PMID:  34186219

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: