OsANN1

2015-01-20 | Categories genes | Tags growth ATPase drought tolerance abiotic stress stress drought stress stress tolerance biotic stress resistance disease disease resistance blast jasmonic jasmonic acid calcium blast disease

Information
- Symbol: OsANN1
- MSU: LOC_Os02g51750
- RAPdb: Os02g0753800
Publication
- A calcium-binding protein, rice annexin OsANN1, enhances heat stress tolerance by modulating the production of H2O2., 2015, J Exp Bot.
- Calcium binding protein OsANN1 regulates rice blast disease resistance by inactivating jasmonic acid signaling., 2023, Plant Physiol.
Genbank accession number
Key message
- OsANN1-knockdown [RNA interference (RNAi)] plants were more sensitive to heat and drought stresses, whereas OsANN1-overexpression (OE) lines showed improved growth with higher expression of OsANN1 under abiotic stress
- OsANN1 also has calcium-binding and ATPase activities in vitro, indicating that OsANN1 has multiple functions in rice growth
- Here it is reported that OsANN1 confers abiotic stress tolerance by modulating antioxidant accumulation under abiotic stress
- Overexpression of OsANN1 promoted SOD (superoxide dismutase) and CAT (catalase) activities, which regulate H2O2 content and redox homeostasis, suggesting the existence of a feedback mechanism between OsANN1 and H2O2 production under abiotic stress
- Higher expression of OsANN1 can provide overall cellular protection against abiotic stress-induced damage, and a significant accumulation of OsANN1-green fluorescent protein (GFP) signals was found in the cytosol after heat shock treatment
- Calcium binding protein OsANN1 regulates rice blast disease resistance by inactivating jasmonic acid signaling.
Connection
- HAN1, OsANN1, Calcium binding protein OsANN1 regulates rice blast disease resistance by inactivating jasmonic acid signaling., By yeast two-hybrid screening, we found that OsANN1 interacted with a cytochrome P450 monooxygenase, HAN1 ("HAN" termed "chilling" in Chinese), which has been reported to catalyze the conversion of biologically active jasmonoyl-L-isoleucine (JA-Ile) to the inactive form 12-hydroxy-JA-Ile (12OH-JA-Ile)
- HAN1, OsANN1, Calcium binding protein OsANN1 regulates rice blast disease resistance by inactivating jasmonic acid signaling., Genetic evidence showed that OsANN1 acts upstream of HAN1
- HAN1, OsANN1, Calcium binding protein OsANN1 regulates rice blast disease resistance by inactivating jasmonic acid signaling., OsANN1 stabilizes HAN1 in planta, resulting in the inactivation of the endogenous biologically active JA-Ile

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