RMS2,OsGELP34

| Categories genes  | Tags anther  development  homeostasis  fertility  tapetum  tapetal  anther development  node  pollen  sterile  pollen development  pollen exine formation 
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  • Key message
    • RMS2 was map-based cloned as an endoplasmic reticulum-localized GDSL lipase gene, which is predominantly transcribed during early anther development
    • RMS2 encoding a GDSL lipase mediates lipid homeostasis in anthers to determine rice male fertility.
    • Furthermore, RMS2 is directly targeted by male fertility regulators Undeveloped Tapetum 1 (UDT1) and Persistent Tapetal Cell 1 (PTC1) both in vitro and in vivo, suggesting that RMS2 may serve as a key node in the rice male fertility regulatory network
    • GDSL esterase/lipases OsGELP34 and OsGELP110/OsGELP115 are essential for rice pollen development.
    • OsGELP34 encodes an endoplasmic reticulum protein and was mainly expressed in anthers during pollen exine formation
    • osgelp34 mutant displayed abnormal exine and altered expression of a number of key genes required for pollen development
    • These results suggested that OsGELP34 and OsGELP110/OsGELP115 catalyze different compounds for pollen exine development
    • OsGELP34 is distant from OsGELP110 and OsGELP115 in sequence, and osgelp34 and osgelp110/osgelp115 mutants were different in anther morphology despite both were male sterile
    • OsGELP34 was identified by cloning of a male sterile mutant gene
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