NTRC

2015-01-20 | Categories genes  | Tags oxidative  photosynthesis  chloroplast  phosphate  senescence 

• Information
  • Symbol: NTRC
  • MSU: LOC_Os07g46410
  • RAPdb: Os07g0657900
• Publication
  • Rice NTRC is a high-efficiency redox system for chloroplast protection against oxidative damage, 2006, Plant Cell.
• Genbank accession number
  • AJ582621
• Key message
  • We propose that NTRC constitutes an alternative system for chloroplast protection against oxidative damage, using NADPH as the source of reducing power
  • Since no light-driven reduced ferredoxin is produced at night, the NTRC-BAS1 pathway may be a key detoxification system during darkness, with NADPH produced by the oxidative pentose phosphate pathway as the source of reducing power
  • Rice NTRC is a high-efficiency redox system for chloroplast protection against oxidative damage
  • An Arabidopsis thaliana knockout mutant for NTRC shows irregular mesophyll cell shape, abnormal chloroplast structure, and unbalanced BAS1 redox state, resulting in impaired photosynthesis rate under low light
  • We show that rice (Oryza sativa) chloroplast NADPH THIOREDOXIN REDUCTASE (NTRC), with a thioredoxin domain, uses NADPH to reduce the chloroplast 2-Cys peroxiredoxin BAS1, which then reduces hydrogen peroxide
  • Moreover, prolonged darkness followed by light/dark incubation produced an increase in hydrogen peroxide and lipid peroxidation in leaves and accelerated senescence of NTRC-deficient plants
• Connection

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