Gene Details:

• MSU gene ID: LOC_Os02g56850
• RAPdb gene ID: Os02g0813500
• Gene Symbol: OsGR2 RGRC2
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The expression of OsGR2 and OsGR3 but not OsGR1 was increased in rice roots treated with 150 mM NaCl.
• In fact, exogenous application of ABA enhanced the expression of OsGR2 and OsGR3 in rice roots.
• On inhibiting ABA accumulation with sodium tungstate (Tu), an inhibitor of ABA biosynthesis, the expression of OsGR2 and OsGR3 was still induced by NaCl; therefore, NaCl-triggered expression of OsGR2 and OsGR3 in rice roots is not mediated by accumulation of ABA.
• However, NaCl treatment could induce H2O2 production in rice roots, and H2O2 treatment resulted in enhanced OsGR2 and OsGR3 induction.
• Moreover, the increase in H2O2 level was prior to the induction of OsGR2 and OsGR3 in NaCl-treated rice roots.
• Thus, H2O2, but not ABA, is involved in regulation of OsGR2 and OsGR3 expression in NaCl-treated rice roots.
• mRNA and protein of RGRC2 were observed mainly in roots and calli but little in leaf tissues.
• From the presence of two ABA-responsive elements in the 5’-flanking region of RGRC2, we examined the expression in rice seedlings treated with ABA and the ABA-related environmental stresses, chilling, drought and salinity.
• Semi-quantitative RT-PCR was used to quantify the mRNA levels for one cytosolic (OsGR2) and two chloroplastic (OsGR1 and OsGR3) isoforms of GR identified in the rice genome.
• Semi-quantitative RT-PCR was applied to quantify the mRNA levels for one cytosolic (OsGR2) and two chloroplastic (OsGR1 and OsGR3) isoforms of glutathione reductase identified in the rice genome.
• The expression of OsGR2 and OsGR3 but not OsGR1 was increased in rice roots treated with NaCl.
• NaCl-induced OsGR2 and OsGR3 in rice roots could be associated with Na(+) but not an osmotic component.

Function-related keywords:

• root ,  ABA ,  salinity ,  chloroplast ,  drought ,  leaf ,  chilling ,  seedling

Literature:

• Na(+) but not Cl(-) or osmotic stress is involved in NaCl-induced expression of Glutathione reductase in roots of rice seedlings .  DOI:  10.1016/j.jplph.2009.04.001 ;  PMID:  19423186
• Involvement of hydrogen peroxide in heat shock- and cadmium-induced expression of ascorbate peroxidase and glutathione reductase in leaves of rice seedlings .  DOI:  10.1016/j.jplph.2011.11.012 ;  PMID:  22196946
• NaCl-induced expression of glutathione reductase in roots of rice (Oryza sativa L.) seedlings is mediated through hydrogen peroxide but not abscisic acid .  DOI:  10.1007/s11104-008-9874-z
• Gene cloning and expression of cytosolic glutathione reductase in rice (Oryza sativa L.) .  DOI:  10.1093/oxfordjournals.pcp.a029330 ;  PMID:  10050312

Related News:

Gene Resources:

• NCBI ID: AB009592  , D37870  , D85751
• UniProt accessions:

Sequences: