OsHAK16

2015-01-20 | Categories genes  | Tags salt stress  salt  root  growth  shoot  tolerance  potassium  salt tolerance  stress  homeostasis  plasma membrane  potassium uptake 

• Information
  • Symbol: OsHAK16
  • MSU: LOC_Os03g37840
  • RAPdb: Os03g0575200
• Publication
  • Effects of salt stress on ion balance and nitrogen metabolism of old and young leaves in rice Oryza sativa L., 2012, BMC Plant Biol.
  • Inventory and functional characterization of the HAK potassium transporters of rice, 2002, Plant Physiol.
  • Rice OsHAK16 functions in potassium uptake and translocation in shoot, maintaining potassium homeostasis and salt tolerance., 2019, Planta.
• Genbank accession number
  • AJ427973
  • AK066919
  • AJ427973
  • AK066919
• Key message
  • The up-regulation of OsHKT1;1, OsHAK10 and OsHAK16 might contribute to accumulation of Na+ in old leaves under salt stress
  • OsHAK16 knockout (KO) dramatically reduced root K net uptake rate and growth at both 0
  • OsHAK16 disruption decreased while its overexpression increased K concentration in root slightly but in shoot remarkably
  • 1 mM and 1 mM K supplies, while OsHAK16 overexpression (OX) increased total K uptake and growth only at 0
  • Expression of OsHAK16 enhanced the growth of high salt-sensitive yeast mutant by increasing its K but no Na content
  • OsHAK16 mediates K uptake and root-to-shoot translocation in a broad range of external K concentrations, thereby contributing to the maintenance of K homeostasis and salt tolerance in the rice shoot
  • Taking all these together, we conclude that OsHAK16 plays crucial roles in maintaining K homeostasis and salt tolerance in rice shoot
  • Rice OsHAK16 functions in potassium uptake and translocation in shoot, maintaining potassium homeostasis and salt tolerance.
  • Transcriptional expression of OsHAK16 was up-regulated by K deficiency or salt stress
  • OsHAK16 is localized at the plasma membrane
• Connection
  • OsHAK10, OsHAK16, Effects of salt stress on ion balance and nitrogen metabolism of old and young leaves in rice Oryza sativa L., The up-regulation of OsHKT1;1, OsHAK10 and OsHAK16 might contribute to accumulation of Na+ in old leaves under salt stress
  • OsHAK16, OsHKT1;1~OsHKT4, Effects of salt stress on ion balance and nitrogen metabolism of old and young leaves in rice Oryza sativa L., The up-regulation of OsHKT1;1, OsHAK10 and OsHAK16 might contribute to accumulation of Na+ in old leaves under salt stress
  • OsHAK16, WOX11, Improving rice tolerance to potassium deficiency by enhancing OsHAK16p:WOX11-controlled root development., Here, we report that ectopic expression of WOX11 gene driven by the promoter of OsHAK16 encoding a low-K-enhanced K transporter led to an extensive root system and adventitious roots and more effective tiller numbers in rice

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