Gene Details:

• MSU gene ID: LOC_Os09g36220
• RAPdb gene ID: Os09g0532400
• Gene Symbol: OsPRR95
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Two central circadian oscillators OsPRR59 and OsPRR95 modulate magnesium homeostasis and carbon fixation in rice.
• Here, we report two central oscillator genes of circadian clock, OsPRR95 and OsPRR59 in rice, which function as transcriptional repressors to negatively regulate the rhythmic expression of OsMGT3 encoding a chloroplast-localized Mg(2+) transporter.
• Furthermore, sugar triggers the increase of superoxide, which may act as a feedback signal to positively regulate the expression of OsPRR95 and OsPRR59.
• We also found that OsPRR95 binds to the ABA receptor gene REGULATORY COMPONENTS OF ABA RECEPTORS10 (OsRCAR10) DNA and inhibits its expression.
• Genetic analysis showed OsRCAR10 acts downstream of OsPRR95 in mediating ABA responses.
• In addition, the induction of OsPRR95 by ABA partly required a functional OsRCAR10, and the ABA responsive element (ABRE)-binding factor ABSCISIC ACID INSENSITIVE5 (OsABI5) bound directly to the promoter of OsPRR95 and activated its expression, thus establishing a regulatory feedback loop between OsPRR95, OsRCAR10 and OsABI5.

Function-related keywords:

• homeostasis ,  transporter ,  sugar ,  transcriptional-repressor ,  magnesium ,  ABA ,  abscisic-acid

Literature:

• Clock component OsPRR73 positively regulates rice salt tolerance by modulating OsHKT2;1-mediated sodium homeostasis .  DOI:  10.15252/embj.2020105086 ;  PMID:  33347628
• Two central circadian oscillators OsPRR59 and OsPRR95 modulate magnesium homeostasis and carbon fixation in rice .  DOI:  10.1016/j.molp.2022.09.008 ;  PMID:  36114668
• A regulatory loop establishes the link between the circadian clock and abscisic acid signaling in rice .  DOI:  10.1093/plphys/kiac548 ;  PMID:  36493391

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: