- Information
- Symbol: OsABA2
- MSU: LOC_Os03g59610
- RAPdb: Os03g0810800
- Publication
- Functional characterization of xanthoxin dehydrogenase in rice., 2014, J Plant Physiol.
- Mutation in Rice Abscisic Acid2 Results in Cell Death, Enhanced Disease-Resistance, Altered Seed Dormancy and Development., 2018, Front Plant Sci.
- Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., 2021, Biochem Biophys Res Commun.
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Genbank accession number
- Key message
- Moreover, expression of OsABA2 in an Arabidopsis aba2 mutant rescued the aba2 mutant phenotypes, characterized by reduced growth, increased water loss, and germination in the presence of paclobutrazol, a gibberellin biosynthesis inhibitor or high concentration of glucose
- Expression analysis of OsABA2 mRNA showed that the transcript level did not change in response to treatment with ABA or dehydration
- These results indicate that OsABA2 is a rice XanDH that functions in ABA biosynthesis
- Map-based cloning identified a G-to-A point mutation resulting in a D-to-N substitution at the amino acid position 110 of OsABA2 (LOC_Os03g59610) in lmm9150
- Consistent with the function of OsABA2 in ABA biosynthesis, ABA level in the lmm9150 mutant was significantly reduced
- We also found that OsABA2 has feedback regulation on OsMPK1 kinase activity
- Finally, genetic analysis showed that OsABA2 can enhance the sensitivity of rice to ABA and the tolerance of rice to drought and salt stress
- Further research reveals that OsMPK1 and OsABA2 coordinately regulate the biosynthesis of ABA, and phosphorylation of OsABA2 at Ser197 by OsMPK1 plays a crucial role in regulating the biosynthesis of ABA
- Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice.
- Here, by using yeast two-hybrid assay and firefly luciferase complementary imaging assay, we show that OsMPK1 physically interact with a short-chain dehydrogenase protein OsABA2
- Connection
- OsABA2, OsbHLH035~OsbHLH35, The transcription factor OsbHLH035 mediates seed germination and enables seedling recovery from salt stress through ABA-dependent and ABA-independent pathways, respectively., In parallel, abscisic acid (ABA) contents are over-accumulated, and the expression of the ABA biosynthetic genes OsABA2 and OsAAO3 is upregulated; furthermore, compared with that in wild-type (WT) seedlings, the salt-induced expression of OsABA8ox1, an ABA catabolic gene, in germinating Osbhlh035 mutant seeds is downregulated
- OsABA2, OsMPK1~OsMAPK6~OsSIPK, Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice.
- OsABA2, OsMPK1~OsMAPK6~OsSIPK, Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., Here, by using yeast two-hybrid assay and firefly luciferase complementary imaging assay, we show that OsMPK1 physically interact with a short-chain dehydrogenase protein OsABA2
- OsABA2, OsMPK1~OsMAPK6~OsSIPK, Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., However, OsMPK5, a homolog of OsMPK1, does not interact with OsABA2
- OsABA2, OsMPK1~OsMAPK6~OsSIPK, Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., We also found that OsABA2 has feedback regulation on OsMPK1 kinase activity
- OsABA2, OsMPK1~OsMAPK6~OsSIPK, Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., Further research reveals that OsMPK1 and OsABA2 coordinately regulate the biosynthesis of ABA, and phosphorylation of OsABA2 at Ser197 by OsMPK1 plays a crucial role in regulating the biosynthesis of ABA
- OsABA2, OsMSRMK2~OsMAP1~OsMPK5~OsMAPK2~OsMAPK5~OsBIMK1~OsMPK3, Phosphorylation of OsABA2 at Ser197 by OsMPK1 regulates abscisic acid biosynthesis in rice., However, OsMPK5, a homolog of OsMPK1, does not interact with OsABA2
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