OsGpx3,GPX3,OsGPx03

• Symbol: OsGpx3,GPX3,OsGPx03
• MSU: LOC_Os02g44500
• RAPdb: Os02g0664000

• Role of peroxidases in the compensation of cytosolic ascorbate peroxidase knockdown in rice plants under abiotic stress, 2011, Plant Cell Environ.
• Glutathione peroxidase family - an evolutionary overview, 2008, FEBS J.
• The mitochondrial glutathione peroxidase GPX3 is essential for H2O2 homeostasis and root and shoot development in rice, 2013, Plant Sci.
• The mitochondrial isoform glutathione peroxidase 3 OsGPX3 is involved in ABA responses in rice plants, 2020, J Proteomics.

Genbank accession number

• 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