GPA3

2015-01-20 | Categories genes  | Tags seed  endosperm 

• Information
  • Symbol: GPA3
  • MSU: LOC_Os03g61950
  • RAPdb: Os03g0835800
• Publication
  • GLUTELIN PRECURSOR ACCUMULATION3 encodes a regulator of post-Golgi vesicular traffic essential for vacuolar protein sorting in rice endosperm, 2014, Plant Cell.
• Genbank accession number
  • AK070689
• Key message
  • Here, we report the functional characterization of the rice (Oryza sativa) glutelin precursor accumulation3 (gpa3) mutant, which exhibits a floury endosperm phenotype and accumulates excess proglutelins in dry seeds
  • Positional cloning of GPA3 revealed that it encodes a plant-specific kelch-repeat protein that is localized to the trans-Golgi networks, DVs, and PSVs in the developing endosperm
• Connection
  • GPA3, OsbZIP60, OsbZIP60-mediated unfolded protein response regulates grain chalkiness in rice., Furthermore, OsbZIP60 is found to activate the expression of key genes related to grain chalkiness, such as GPA3, FSE1, FLO7, Chalk5, OsNF-YB1, and OsPK2, whose expression is significantly suppressed in osbzip60 and overexpression lines of OsbZIP50, OsBiP1, OsBiP2, and OsBiP3

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