DP1

2015-01-20 | Categories genes  | Tags transcription factor  flower  sterile  floral  lemma  architecture  palea  floral organ number  development 

• Information
  • Symbol: DP1
  • MSU: LOC_Os06g04540
  • RAPdb: Os06g0136900
• Publication
  • An AT-hook gene is required for palea formation and floral organ number control in rice, 2011, Dev Biol.
  • An AT-hook protein DEPRESSED PALEA1 physically interacts with the TCP family transcription factor RETARDED PALEA1 in rice., 2017, Biochem Biophys Res Commun.
• Genbank accession number
  • AK107405
• Key message
  • The DP1 enhancer SDP1 was also positional cloned, and was found identical to the recently reported RETARDED PALEA1 (REP1) gene encoding a TCP family transcription factor
  • We identified the DP1 gene by map-based cloning and found it encodes a nuclear-localized AT-hook DNA binding protein, suggesting a grass-specific role of chromatin architecture modification in flower development
  • The sterile lemma at the palea side is occasionally elongated in dp1 mutants
  • Both the sterile lemma elongation and the floral organ number increase phenotype are enhanced by the mutation of an independent gene SMALL DEGENERATIVE PALEA1 (SDP1), whose single mutation causes reduced palea size
  • In addition, we found a floral organ number increase in dp1 mutants at low penetration
  • E function and presumable A function floral homeotic genes were found suppressed in the dp1-2 mutant
  • The depressed palea1 (dp1) mutants show a primary defect in the main structure of palea, implying that palea is a fusion between the main structure and marginal tissues on both sides
  • DP1 is an AT-hook protein while REP1 is a TCP transcription factor, both of which are important regulators of palea development
• Connection
  • DP1, REP1~OsTb2, An AT-hook gene is required for palea formation and floral organ number control in rice, The DP1 enhancer SDP1 was also positional cloned, and was found identical to the recently reported RETARDED PALEA1 (REP1) gene encoding a TCP family transcription factor
  • DP1, REP1~OsTb2, An AT-hook gene is required for palea formation and floral organ number control in rice, We further found that SDP1/REP1 is downstreamly regulated by DP1
  • DP1, REP1~OsTb2, An AT-hook protein DEPRESSED PALEA1 physically interacts with the TCP family transcription factor RETARDED PALEA1 in rice., Previously, we identified rice depressed palea1 (dp1) mutants with defects in main structure of palea and its enhancer RETARDED PALEA1 (REP1)
  • DP1, REP1~OsTb2, An AT-hook protein DEPRESSED PALEA1 physically interacts with the TCP family transcription factor RETARDED PALEA1 in rice., DP1 is an AT-hook protein while REP1 is a TCP transcription factor, both of which are important regulators of palea development
  • DP1, REP1~OsTb2, An AT-hook protein DEPRESSED PALEA1 physically interacts with the TCP family transcription factor RETARDED PALEA1 in rice., Here, we demonstrated that DP1 interacts physically with REP1 both in yeast and in rice protoplasts

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