OsMADS22

2015-01-20 | Categories genes  | Tags leaf  spikelet meristem  flowering time  floral  temperature  meristem  flower  spikelet  vegetative  palea  stamen 

• Information
  • Symbol: OsMADS22
  • MSU: LOC_Os02g52340
  • RAPdb: Os02g0761000
• Publication
  • Functional conservation and diversification between rice OsMADS22/OsMADS55 and Arabidopsis SVP proteins, 2012, Plant Sci.
  • OsMADS22, an STMADS11-like MADS-box gene of rice, is expressed in non-vegetative tissues and its ectopic expression induces spikelet meristem indeterminacy, 2005, Mol Genet Genomics.
• Genbank accession number
  • AK070121
• Key message
  • Overexpression of OsMADS22 and OsMADS55 led to abnormal floral morphologies including leaf-like sepals, whereas only OsMADS55 expression caused delayed flowering via downregulation of FLOWERING LOCUS T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1)
  • OsMADS22, an STMADS11-like MADS-box gene of rice, is expressed in non-vegetative tissues and its ectopic expression induces spikelet meristem indeterminacy
  • Overexpression of OsMADS55, but not OsMADS22, complemented the early flowering phenotype and ambient temperature-insensitive flowering phenotype seen in svp mutants, suggesting that OsMADS55 regulates flowering time associated with ambient temperature responses in Arabidopsis
  • In contrast to previously reported STMADS11-like genes, whose expression is detected in vegetative tissues, OsMADS22 is mainly expressed during embryogenesis and flower development
  • Ectopic expression of OsMADS22 in transgenic rice plants resulted in aberrant floral morphogenesis, characterized by a disorganized palea, an elongated glume, and a two-floret spikelet
  • In situ hybridization analysis revealed that OsMADS22 expression is localized in the L1 layer of embryos and in developing stamen primordia
• Connection

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