DSM1

2015-01-20 | Categories genes  | Tags panicle  oxidative  seedling  drought resistance  salt  drought 

• Information
  • Symbol: DSM1
  • MSU: LOC_Os02g50970
  • RAPdb: Os02g0743500
• Publication
  • A Raf-like MAPKKK gene DSM1 mediates drought resistance through reactive oxygen species scavenging in rice, 2010, Plant Physiol.
• Genbank accession number
  • AK100319
  • AK102767
  • AK100319
  • AK102767
• Key message
  • Two allelic dsm1 mutants were more sensitive than wild-type plants to drought stress at both seedling and panicle development stages
  • Peroxidase activity, electrolyte leakage, chlorophyll content, and 3,3’-diaminobenzidine staining revealed that the dsm1 mutant was more sensitive to oxidative stress due to an increase in ROS damage caused by the reduced POX activity
  • Overexpression of DSM1 in rice increased the tolerance to dehydration stress at the seedling stage
  • A Raf-like MAPKKK gene DSM1 mediates drought resistance through reactive oxygen species scavenging in rice
  • By real-time PCR analysis, the DSM1 gene was induced by salt, drought, and abscisic acid, but not by cold
  • We identified a drought-hypersensitive mutant (drought-hypersensitive mutant1 [dsm1]) of a putative MAPK kinase kinase (MAPKKK) gene in rice (Oryza sativa)
  • The dsm1 mutants lost water more rapidly than wild-type plants under drought stress, which was in agreement with the increased drought-sensitivity phenotype of the mutant plants
  • DSM1-RNA interference lines were also hypersensitive to drought stress
  • Together, these results suggest that DSM1 might be a novel MAPKKK functioning as an early signaling component in regulating responses to drought stress by regulating scavenging of ROS in rice
• Connection

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