- Information
- Symbol: OsHKT2;1,OsHKT1
- MSU: LOC_Os06g48810
- RAPdb: Os06g0701700
- PSP score
- LOC_Os06g48810.1: 0.0152
- PLAAC score
- LOC_Os06g48810.1: 0
- pLDDT score
- 80
- Protein Structure from AlphaFold and UniProt
- Publication
- Rice OsHKT2;1 transporter mediates large Na+ influx component into K+ -starved roots for growth, 2007, EMBO J.
- Expressions of OsHKT1, OsHKT2, and OsVHA are differentially regulated under NaCl stress in salt-sensitive and salt-tolerant rice Oryza sativa L. cultivars, 2006, J Exp Bot.
- Sodium transport and HKT transporters: the rice model, 2003, The Plant Journal.
- HKT2;2/1, a K+-permeable transporter identified in a salt-tolerant rice cultivar through surveys of natural genetic polymorphism, 2012, Plant J.
- Differential sodium and potassium transport selectivities of the rice OsHKT2;1 and OsHKT2;2 transporters in plant cells, 2010, Plant Physiol.
- OsHKT2;2/1-mediated Na+ influx over K+ uptake in roots potentially increases toxic Na+ accumulation in a salt-tolerant landrace of rice Nona Bokra upon salinity stress., 2015, J Plant Res.
- Genbank accession number
- Key message
- No-OsHKT2;2/1 is essentially expressed in roots and displays a significant level of expression at high Na(+) concentrations, in contrast to OsHKT2;1
- The OsHKT2;1 (previously named OsHKT1) transporter from rice functions as a relatively Na+-selective transporter in heterologous expression systems, but the in vivo function of OsHKT2;1 remains unknown
- These analyses demonstrate that Na+ can enhance growth of rice under K+ starvation conditions, and that OsHKT2;1 is the central transporter for nutritional Na+ uptake into K+-starved rice roots
- Rice OsHKT2;1 transporter mediates large Na+ influx component into K+ -starved roots for growth
- In addition, the presence of external K(+) and Ca(2+) down-regulated OsHKT2;1-mediated Na(+) influx in two plant systems, Bright-Yellow 2 cells and intact rice roots, and also in Xenopus oocytes
- In roots, the expressions were much lower than in shoots, except for OsHKT4 and OsHKT1 in K+-starved plants
- We propose that OsHKT transporters are involved in Na+ movements in rice, and that OsHKT1 specifically mediates Na+ uptake in rice roots when the plants are K+ deficient
- Yeast expressions of OsHKT1 and OsHKT4 proved that they are Na+ transporters of high and low affinity, respectively, which are sensitive to K+ and Ba2+
- Parallel experiments of K+ and Na+ uptake in yeast expressing the wheat or rice HKT1 transporters proved that they were very different; TaHKT1 transported K+ and Na+, and OsHKT1 only Na+
- Upon NaCl stress, the OsHKT1 transcript was significantly down-regulated in salt-tolerant cv
- Pokkali regulates the expression of OsHKT1, OsHKT2, and OsVHA differently from how the salt-sensitive cv
- Expressions of OsHKT1, OsHKT2, and OsVHA are differentially regulated under NaCl stress in salt-sensitive and salt-tolerant rice (Oryza sativa L.) cultivars
- OsHKT2;1 was mainly expressed in the cortex and endodermis of roots
- (22)Na+ tracer influx experiments revealed that Na+ influx into oshkt2;1-null roots was dramatically reduced compared with wild-type plants
- Therefore, here we analyze two highly homologous rice (Oryza sativa) HKT transporters in plant cells, OsHKT2;1 and OsHKT2;2, that show differential K(+) permeabilities in heterologous systems
- Differential sodium and potassium transport selectivities of the rice OsHKT2;1 and OsHKT2;2 transporters in plant cells
- We have investigated OsHKT2;1 natural variation in a collection of 49 cultivars with different levels of salt tolerance and geographical origins
- The OsHKT1, OsHKT2, and OsVHA transporter genes might play important roles in maintaining cytosolic Na(+) homeostasis in rice (Oryza sativa L
- Interestingly, three independent oshkt2;1-null alleles exhibited significantly reduced growth compared with wild-type plants under low Na+ and K+ starvation conditions
- Connection
- OsHKT2;1~OsHKT1, OsVHA, Expressions of OsHKT1, OsHKT2, and OsVHA are differentially regulated under NaCl stress in salt-sensitive and salt-tolerant rice Oryza sativa L. cultivars, The OsHKT1, OsHKT2, and OsVHA transporter genes might play important roles in maintaining cytosolic Na(+) homeostasis in rice (Oryza sativa L
- OsHKT2;1~OsHKT1, OsVHA, Expressions of OsHKT1, OsHKT2, and OsVHA are differentially regulated under NaCl stress in salt-sensitive and salt-tolerant rice Oryza sativa L. cultivars, Pokkali regulates the expression of OsHKT1, OsHKT2, and OsVHA differently from how the salt-sensitive cv
- OsHKT2;1~OsHKT1, OsVHA, Expressions of OsHKT1, OsHKT2, and OsVHA are differentially regulated under NaCl stress in salt-sensitive and salt-tolerant rice Oryza sativa L. cultivars, Expressions of OsHKT1, OsHKT2, and OsVHA are differentially regulated under NaCl stress in salt-sensitive and salt-tolerant rice (Oryza sativa L.) cultivars
- HKT2, OsHKT2;1~OsHKT1, Two types of HKT transporters with different properties of Na+ and K+ transport in Oryza sativa, We also isolated two cDNAs homologous to Ni-OsHKT1 from salt-tolerant indica rice, cv Pokkali (Po-OsHKT1, Po-OsHKT2)
- HKT2, OsHKT2;1~OsHKT1, Two types of HKT transporters with different properties of Na+ and K+ transport in Oryza sativa, The predicted amino acid sequence of Ni-OsHKT1 shares 100% identity with Po-OsHKT1 and 91% identity with Po-OsHKT2, and they are 66-67% identical to wheat HKT1
- HKT2, OsHKT2;1~OsHKT1, Two types of HKT transporters with different properties of Na+ and K+ transport in Oryza sativa, We further characterized the ion-transport properties of OsHKT1 and OsHKT2 using an expression system in the heterologous cells, yeast and Xenopus oocytes
- HKT2, OsHKT2;1~OsHKT1, Two types of HKT transporters with different properties of Na+ and K+ transport in Oryza sativa, OsHKT2 was capable of completely rescuing a K+-uptake deficiency mutation in yeast, whereas OsHKT1 was not under K+-limiting conditions
- HKT2, OsHKT2;1~OsHKT1, Two types of HKT transporters with different properties of Na+ and K+ transport in Oryza sativa, When OsHKTs were expressed in Na+-sensitive yeast, OsHKT1 rendered the cells more Na+-sensitive than did OsHKT2 in high NaCl conditions
- HKT2, OsHKT2;1~OsHKT1, Two types of HKT transporters with different properties of Na+ and K+ transport in Oryza sativa, These results suggest that two isoforms of HKT transporters, a Na+ transporter (OsHKT1) and a Na+- and K+-coupled transporter (OsHKT2), may act harmoniously in the salt tolerant indica rice
- OsHKT1;1~OsHKT4, OsHKT2;1~OsHKT1, Sodium transport and HKT transporters: the rice model, Yeast expressions of OsHKT1 and OsHKT4 proved that they are Na+ transporters of high and low affinity, respectively, which are sensitive to K+ and Ba2+
- OsHKT1;1~OsHKT4, OsHKT2;1~OsHKT1, Sodium transport and HKT transporters: the rice model, In roots, the expressions were much lower than in shoots, except for OsHKT4 and OsHKT1 in K+-starved plants
- OsHKT2;1~OsHKT1, OsHKT2;2, HKT2;2/1, a K+-permeable transporter identified in a salt-tolerant rice cultivar through surveys of natural genetic polymorphism, No-OsHKT2;2/1 is essentially expressed in roots and displays a significant level of expression at high Na(+) concentrations, in contrast to OsHKT2;1
- OsHKT2;1~OsHKT1, OsHKT2;2, HKT2;2/1, a K+-permeable transporter identified in a salt-tolerant rice cultivar through surveys of natural genetic polymorphism, Expressed in Xenopus oocytes or in Saccharomyces cerevisiae, No-OsHKT2;2/1 exhibited a strong permeability to Na(+) and K(+), even at high external Na(+) concentrations, like OsHKT2;2, and in contrast to OsHKT2;1
- OsHKT2;1~OsHKT1, OsHKT2;2, Differential sodium and potassium transport selectivities of the rice OsHKT2;1 and OsHKT2;2 transporters in plant cells, Therefore, here we analyze two highly homologous rice (Oryza sativa) HKT transporters in plant cells, OsHKT2;1 and OsHKT2;2, that show differential K(+) permeabilities in heterologous systems
- OsHKT2;1~OsHKT1, OsHKT2;2, Differential sodium and potassium transport selectivities of the rice OsHKT2;1 and OsHKT2;2 transporters in plant cells, Differential sodium and potassium transport selectivities of the rice OsHKT2;1 and OsHKT2;2 transporters in plant cells
- OsEIL2, OsHKT2;1~OsHKT1, MHZ6/OsEIL1 and OsEIL2 Regulate Ethylene Response of Roots and Coleoptiles and Negatively Affect Salt Tolerance in Rice., Furthermore, this negative regulation by MHZ6/OsEIL1 and OsEIL2 in salt tolerance is likely in part attributable to the direct regulation of OsHKT2;1 expression and Na+ uptake in roots
- OsHKT2;1~OsHKT1, 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
Prev Next