OsHAK5

2022-11-15 | Categories genes  | Tags potassium  salt tolerance  transporter  salt  xylem  root  tolerance  stress  epidermis 

• Information
  • Symbol: OsHAK5
  • MSU: LOC_Os01g70490
  • RAPdb: Os01g0930400
• PSP score
  • LOC_Os01g70490.1: 0.3588
• PLAAC score
  • LOC_Os01g70490.1: 0
• pLDDT score
  • 78.52
• Protein Structure from AlphaFold and UniProt
  • 
• Publication
  • Rice sodium-insensitive potassium transporter, OsHAK5, confers increased salt tolerance in tobacco BY2 cells, 2011, J Biosci Bioeng.
  • Inventory and functional characterization of the HAK potassium transporters of rice, 2002, Plant Physiol.
  • The role of a potassium transporter OsHAK5 in potassium acquisition and transport from roots to shoots in rice at low potassium supply levels., 2014, Plant Physiol.
• Genbank accession number
  • AP004330
• Key message
  • Rice sodium-insensitive potassium transporter, OsHAK5, confers increased salt tolerance in tobacco BY2 cells
  • These results suggest that the plasma-membrane localized Na(+) insensitive K(+) transporters, similar to OsHAK5 identified here, could be used as a tool to enhance salt tolerance in plant cells
  • Here, in search for Na(+)-insensitive K(+) transporter for this purpose, bacterial expression system was used to characterize two K(+) transporters, OsHAK2 and OsHAK5, isolated from rice (Oryza sativa cv
  • Under the condition with a large amount of extracellular Na(+), we found that OsHAK5 functions as a Na(+)-insensitive K(+) transporter, while OsHAK2 is sensitive to extracellular Na(+) and exhibits higher Na(+) over K(+) transport activities
  • The contribution of OsHAK5 to K mobilization within the rice plant was confirmed further by the change of K concentration in the xylem sap and K distribution in the transgenic lines when K was removed completely from the external solution
  • A β-glucuronidase reporter driven by the OsHAK5 native promoter indicated OsHAK5 expression in various tissue organs from root to seed, abundantly in root epidermis and stele, the vascular tissues, and mesophyll cells
  • Overexpression of OsHAK5 increased the K-sodium concentration ratio in the shoots and salt stress tolerance (shoot growth), while knockout of OsHAK5 decreased the K-sodium concentration ratio in the shoots, resulting in sensitivity to salt stress
  • The role of a potassium transporter OsHAK5 in potassium acquisition and transport from roots to shoots in rice at low potassium supply levels.
• Connection
  • OsHAK2, OsHAK5, Rice sodium-insensitive potassium transporter, OsHAK5, confers increased salt tolerance in tobacco BY2 cells, Here, in search for Na(+)-insensitive K(+) transporter for this purpose, bacterial expression system was used to characterize two K(+) transporters, OsHAK2 and OsHAK5, isolated from rice (Oryza sativa cv
  • OsHAK2, OsHAK5, Rice sodium-insensitive potassium transporter, OsHAK5, confers increased salt tolerance in tobacco BY2 cells, Under the condition with a large amount of extracellular Na(+), we found that OsHAK5 functions as a Na(+)-insensitive K(+) transporter, while OsHAK2 is sensitive to extracellular Na(+) and exhibits higher Na(+) over K(+) transport activities
  • OsHAK5, OsSIDP366, OsSIDP366, a DUF1644 gene, positively regulates responses to drought and salt stresses in rice, Digital gene expression (DGE) profile analysis indicated that stress related genes such as SNAC1, OsHAK5 and PRs were up-regulated in OsSIDP366-overexpressing plants.

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