OsRR6

2015-01-20 | Categories genes  | Tags salinity  root  seedling  dwarf  cytokinin  abiotic stress  temperature  shoot  panicle  seedlings  growth  stress  biotic stress  salinity stress  cold  adventitious root  adventitious root formation 

• Information
  • Symbol: OsRR6
  • MSU: LOC_Os04g57720
  • RAPdb: Os04g0673300
• Publication
  • Identification and characterization of cytokinin-signalling gene families in rice, 2006, Gene.
  • Molecular characterization and differential expression of cytokinin-responsive type-A response regulators in rice Oryza sativa, 2006, BMC Plant Biol.
  • Overexpression of a type-A response regulator alters rice morphology and cytokinin metabolism, 2007, Plant Cell Physiol.
  • Cytokinins act synergistically with salicylic acid to activate defense gene expression in rice, 2013, Mol Plant Microbe Interact.
  • OsRR6, a type-A response regulator in rice, mediates cytokinin, light and stress responses when over-expressed in Arabidopsis, 2021, Plant Physiol Biochem ..
• Genbank accession number
  • AJ938075
  • BR000315
  • AJ938075
  • BR000315
• Key message
  • Moreover, the expression of the OsRR6 gene was enhanced in rice seedlings exposed to salinity, dehydration and low temperature stress
  • Transgenic lines overexpressing OsRR6 (OsRR6-ox) had dwarf phenotypes with poorly developed root systems and panicles
  • The induction of OsRR6 in response to different environmental stimuli indicates its role in cross-talk between abiotic stress and cytokinin signaling
  • Overexpression of the CK-inducible type-A response regulator OsRR6 abolished shoot regeneration, suggesting that OsRR6 acts as a negative regulator of CK signaling
  • The hypocotyl growth in OsRR6OX seedlings was significantly inhibited under red, far-red and blue-light conditions and also a decline in transcript levels of OsRR6 was observed in rice under the above monochromatic as well as white light treatments
  • Comparative transcriptome analysis showed that the genes associated with phenylpropanoid and triterpenoid biosynthesis are enriched among differentially expressed genes in OsRR6OX seedlings of Arabidopsis, which is in conformity with reanalysis of the transcriptome data performed in rice transgenics for OsRR6
  • The Arabidopsis plants constitutively expressing OsRR6 (OsRR6OX) exhibited reduced cytokinin sensitivity, adventitious root formation and enhanced anthocyanin accumulation in seeds
  • The expression of OsRR6 is induced by exogenous cytokinin and various abiotic stress treatments, including drought, cold and salinity stress
• Connection
  • OsRR3, OsRR6, Biochemical and molecular characterisation of exogenous cytokinin application on grain filling in rice., Expression studies of type-A response regulator (RR) component of cytokinin signaling indicated possible role of OsRR3, OsRR4 and OsRR6 as repressors of CKX expression, much needed for an increased accumulation of CK in cells
  • OsRopGEF10~BGL, OsRR6, The RAC/ROP GTPase Activator OsRopGEF10 functions in crown root development by regulating cytokinin signaling in rice., Loss of OsRopGEF10 function reduced the expression of the response regulator gene OsRR6, a repressor of cytokinin signaling, and impaired crown root development

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