- Information
- Symbol: OsAKT1
- MSU: LOC_Os01g45990
- RAPdb: Os01g0648000
- Publication
- Rice K+ uptake channel OsAKT1 is sensitive to salt stress, 2005, Planta.
- The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, 2014, Plant Cell.
- Overexpression of the rice AKT1 potassium channel affects potassium nutrition and rice drought tolerance., 2016, J Exp Bot.
- Potassium Ion Channel Gene OsAKT1 Affects Iron Translocation in Rice Plants Exposed to Iron Toxicity., 2019, Front Plant Sci.
- Calcium lignosulfonate improves proliferation of recalcitrant indica rice callus via modulation of auxin biosynthesis and enhancement of nutrient absorption, 2021, Plant Physiol Biochem.
- Silicon alleviates salt stress-induced potassium deficiency by promoting potassium uptake and translocation in rice Oryza sativa L., 2021, J Plant Physiol.
- Genome-Wide Analysis of Potassium Channel Genes in Rice: Expression of the OsAKT and OsKAT Genes under Salt Stress, 2021, Genes (Basel).
- Genbank accession number
- Key message
- To unravel the mechanisms of K+ uptake and its sensitivity to salt stress in the model plant rice, we isolated and functionally characterized OsAKT1, a potassium channel homologous to the Arabidopsis root inward rectifier AKT1
- OsAKT1 transcripts were predominantly found in the coleoptile and in the roots of young rice seedlings
- Patch-clamp studies on rice root protoplasts identified a K+ inward rectifier with similar channel properties as heterologously expressed OsAKT1
- In line with the transcriptional downregulation of OsAKT1 in response to salt stress, inward K+ currents were significantly reduced in root protoplasts
- Thus, OsAKT1 seems to represent the dominant salt-sensitive K+ uptake channel in rice roots
- Rice K+ uptake channel OsAKT1 is sensitive to salt stress
- The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex
- Disruption of Os-AKT1 significantly reduced the K+ content, which resulted in inhibition of plant growth and development.
- The most prominent result of OsAKT1 overexpression was a reduction in sensitivity to osmotic/drought stress in transgenic plants: the data suggest that AKT1 overexpression improved rice osmotic and drought stress tolerance by increasing tissue levels of K(+), especially in the root
- However, loss-of-function of OsAKT1 increased the sensitivity to excess Fe regarding leaf bronzing symptoms, reactive oxygen species generation, leaf spectral reflectance indices, and chlorophyll fluorescence
- In conclusion, OsAKT1 is crucial for the tolerance of rice against Fe toxicity as K homeostasis affects Fe translocation from root to shoot
- Potassium Ion Channel Gene OsAKT1 Affects Iron Translocation in Rice Plants Exposed to Iron Toxicity.
- Connection
- OsAKT1, OsCBL1, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex
- OsAKT1, OsCBL1, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, Similar to the AKT1 regulation in Arabidopsis, Os-CBL1 and Os-CIPK23 were identified as the upstream regulators of Os-AKT1 in rice
- OsAKT1, OsCBL1, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, The Os-CBL1-Os-CIPK23 complex could enhance Os-AKT1-mediated K+ uptake.
- OsAKT1, OsCBL1, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, These findings demonstrate that Os-AKT1-mediated K+ uptake in rice roots is modulated by the Os-CBL1-Os-CIPK23 complex.
- OsAKT1, OsCIPK23, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, Similar to the AKT1 regulation in Arabidopsis, Os-CBL1 and Os-CIPK23 were identified as the upstream regulators of Os-AKT1 in rice.
- OsAKT1, OsCIPK23, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, The Os-CBL1-Os-CIPK23 complex could enhance Os-AKT1-mediated K+ uptake.
- OsAKT1, OsCIPK23, The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex, These findings demonstrate that Os-AKT1-mediated K+ uptake in rice roots is modulated by the Os-CBL1-Os-CIPK23 complex.
- OsAKT1, OsPEX11, OsPEX11, a Peroxisomal Biogenesis Factor 11, Contributes to Salt Stress Tolerance in Oryza sativa., Furthermore, qPCR data suggested that OsPEX11 acted as a positive regulator of salt tolerance by reinforcing the expression of several well-known rice transporters (OsHKT2;1, OsHKT1;5, OsLti6a, OsLti6b, OsSOS1, OsNHX1, and OsAKT1) involved in Na(+)/K(+) homeostasis in transgenic plants under salinity
- OsAKT1, OsHAK1, OsHAK1, a High-Affinity Potassium Transporter, Positively Regulates Responses to Drought Stress in Rice., Furthermore, qPCR analysis revealed that OsHAK1 act as a positive regulator of the expression of stress-responsive genes as well as of two well-known rice channel genes (OsTPKb and OsAKT1) involved in K homeostasis and stress responses in transgenic plants under dehydration
- OsAKT1, OsGORK~OsK5.2, Tissue-Specific Regulation of Na+ and K+ Transporters Explains Genotypic Differences in Salinity Stress Tolerance in Rice., This trait was conferred by at least three complementary mechanisms: (1) its superior ability to activate H+-ATPase pump operation, both at transcriptional and functional levels; (2) reduced sensitivity of K+ efflux channels to reactive oxygen species; and (3) smaller upregulation in OsGORK and higher upregulation of OsAKT1 in tolerant cultivars in response to salt stress
- OsAKT1, OsCIPK23, Calcium lignosulfonate improves proliferation of recalcitrant indica rice callus via modulation of auxin biosynthesis and enhancement of nutrient absorption, Consistently, increased of potassium protein kinases genes (OsAKT1, OsHAK5, OsCBL, OsCIPK23 and OsCamk1) were also recorded
- OsAKT1, OsHAK5, Calcium lignosulfonate improves proliferation of recalcitrant indica rice callus via modulation of auxin biosynthesis and enhancement of nutrient absorption, Consistently, increased of potassium protein kinases genes (OsAKT1, OsHAK5, OsCBL, OsCIPK23 and OsCamk1) were also recorded
- OsAKT1, OsSKOR, Silicon alleviates salt stress-induced potassium deficiency by promoting potassium uptake and translocation in rice Oryza sativa L., Moreover, Si up-regulated the expression of genes responsible for K uptake (OsAKT1 and OsHAK1) and xylem loading (OsSKOR) in WTs but not in mutants
- OsAKT1, OsHAK1, Silicon alleviates salt stress-induced potassium deficiency by promoting potassium uptake and translocation in rice Oryza sativa L., Moreover, Si up-regulated the expression of genes responsible for K uptake (OsAKT1 and OsHAK1) and xylem loading (OsSKOR) in WTs but not in mutants
- OsAKT1, OsKAT1, Genome-Wide Analysis of Potassium Channel Genes in Rice: Expression of the OsAKT and OsKAT Genes under Salt Stress, Among the studied K+ channel proteins, OsKAT1 and OsAKT1 were identified as proteins with high potential N-glycosylation and phosphorylation sites, and LEU, VAL, SER, PRO, HIS, GLY, LYS, TYR, CYC, and ARG amino acids were predicted as the binding residues in the ligand-binding sites of K+ channel proteins
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