Gene Details:

• MSU gene ID: LOC_Os02g44500
• RAPdb gene ID: Os02g0664000
• Gene Symbol: OsGpx3 GPX3 OsGPx03
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• The mitochondrial glutathione peroxidase GPX3 is essential for H2O2 homeostasis and root and shoot development in rice.
• Transgenic rice plants have been generated that lack mitochondrial OsGpx3.
• These GPX3s plants showed shorter roots and shoots compared to non-transformed (NT) plants, and higher amounts of H2O2 mitochondrial release were observed in the roots of these plants cultivated under normal conditions.
• These results suggest that silencing the mitochondrial OsGpx3 gene impairs normal plant development and leads to a stress-induced morphogenic response via H2O2 accumulation.
• This accumulation of H2O2 is positively associated with shorter root length in GPX3s plants compared to NT ones.
• Moreover, GPX3 promoter analysis indicated that it is mainly expressed in root tissue.
• This study is the first to demonstrate that OsGpx3 plays a role in ABA signaling and corroborate that redox homeostasis enzymes can act in different and complex pathways in plant cells.
• Nipponbare) OsGpx3 is induced after treatment with the phytohormone abscisic acid (ABA) and is involved in its responses and in epigenetic modifications.

Function-related keywords:

• homeostasis ,  mitochondria ,  root ,  shoot ,  ABA ,  abscisic-acid ,  phytohormone ,  redox-homeostasis

Literature:

• Role of peroxidases in the compensation of cytosolic ascorbate peroxidase knockdown in rice plants under abiotic stress .  DOI:  10.1111/j.1365-3040.2011.02366.x ;  PMID:  21631533
• Glutathione peroxidase family - an evolutionary overview .  DOI:  10.1111/j.1742-4658.2008.06542.x ;  PMID:  18616466
• The mitochondrial glutathione peroxidase GPX3 is essential for H2O2 homeostasis and root and shoot development in rice .  DOI:  10.1016/j.plantsci.2013.03.017 ;  PMID:  23683934
• The mitochondrial isoform glutathione peroxidase 3 (OsGPX3) is involved in ABA responses in rice plants .  DOI:  10.1016/j.jprot.2020.104029 ;  PMID:  33160103

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: