| Categories genes  | Tags oxidative  transcription factor  growth  drought  phytohormone  nitrogen  anther  development  seed 
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  • Key message
    • In addition, OsOAT-overexpressing plants showed significantly increased tolerance to oxidative stress
    • An ornithine delta-aminotransferase gene OsOAT confers drought and oxidative stress tolerance in rice
    • We confirmed that OsOAT is a direct target of the stress-responsive NAC transcription factor SNAC2
    • Overexpression of OsOAT caused significantly increased delta-OAT activity and Pro accumulation under normal growth conditions
    • Both ABA-dependent and ABA-independent pathways contributed to the drought-induced expression of OsOAT
    • Overexpression of the OsOAT gene in rice resulted in significantly enhanced drought and osmotic stress tolerance
    • OsOAT is responsive to multiple stresses and phytohormone treatments
    • In the Osoat mutant, metabolic abnormality induced by nitrogen deficiency in floret causes malformed glumes, incapable glume opening and anther indehiscence
    • Therefore, OsOAT is crucial for nitrogen reutilization and plays a critical role in floret development and seed setting in rice
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