- Information
- Symbol: OsPKS2
- MSU: LOC_Os07g22850
- RAPdb: Os07g0411300
- Publication
- The polyketide synthase OsPKS2 is essential for pollen exine and Ubisch body patterning in rice., 2017, J Integr Plant Biol.
- OsPKS2 is required for rice male fertility by participating in pollen wall formation., 2018, Plant Cell Rep.
- OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice, 2021, Rice (N Y).
- Loss of Function of the RRMF Domain in OsROS1a Causes Sterility in Rice Oryza sativa L.., 2022, Int J Mol Sci.
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Genbank accession number
- Key message
- The polyketide synthase OsPKS2 is essential for pollen exine and Ubisch body patterning in rice.
- Recombinant OsPKS2 catalyzed the condensation of fatty acyl-CoA with malonyl-CoA to generate triketide and tetraketide α-pyrones, the main components of pollen exine
- Indeed, the ospks2 mutant had defective exine patterning and was male sterile
- OsPKS2 is required for rice male fertility by participating in pollen wall formation.
- Results suggested that OsPKS2 is critical for pollen wall formation, and plays a conserved but differentiated role in sporopollenin biosynthesis from Arabidopsis
- Two other allelic mutants of OsPKS2 were generated using the CRISPR/Cas9 system and are also completely male sterile
- This result thus further confirmed that OsPKS2 controls rice male fertility
- Connection
- CYP703A3, OsPKS2, OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice, CYP703A3, CYP704B2, OsPKS1, OsPKS2, DPW and ABCG15 are sporopollenin synthesis and transport-related genes in rice
- CYP704B2, OsPKS2, OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice, CYP703A3, CYP704B2, OsPKS1, OsPKS2, DPW and ABCG15 are sporopollenin synthesis and transport-related genes in rice
- OsPKS1~YY2~OsLAP6, OsPKS2, OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice, CYP703A3, CYP704B2, OsPKS1, OsPKS2, DPW and ABCG15 are sporopollenin synthesis and transport-related genes in rice
- DPW, OsPKS2, OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice, CYP703A3, CYP704B2, OsPKS1, OsPKS2, DPW and ABCG15 are sporopollenin synthesis and transport-related genes in rice
- OsPKS2, STS1~OsLDDT1~OsSTS1, SWOLLEN TAPETUM AND STERILITY 1 Is Required for Tapetum Degeneration and Pollen Wall Formation in Rice., Moreover, STS1 interacts with Polyketide Synthase 2 (OsPKS2) and Acyl-CoA Synthetase 12 (OsACOS12), two enzymes crucial in lipidic sporopollenin biosynthesis in pollen wall formation, suggesting a potentially lipidic metabolon for sporopollenin biosynthesis in rice
- AMD1~PWA1, OsPKS2, Grass-specific ABERRANT MICROSPORE DEVELOPMENT 1 is required for maintaining pollen fertility in rice., Further biochemical assays indicate that AMD1 directly activates the transcription of DEFECTIVE POLLEN WALL (DPW) and POLYKETIDE SYNTHASE2 (OsPKS2), which are both implicated in sporopollenin biosynthesis during exine formation
- OsPKS2, ROS1a~OsROS1a, Loss of Function of the RRMF Domain in OsROS1a Causes Sterility in Rice Oryza sativa L.., Furthermore, bisulfite sequencing showed that the CG and CHG methylation of the OsPKS2 gene promoter was significantly increased in the osros1a mutant, which caused a reduced expression of OsPKS2 in osros1a mutants
- OsPKS2, OsTKPR2, OsTKPR2 is part of a sporopollenin-producing metabolon required for exine formation in rice., OsTKPR1 and OsTKPR2 were integrated into a metabolon including OsACOS12 and OsPKS2, which resulted in a significant increased enzymatic efficiency when both OsTKPR1 and OsTKPR2 were present, indicating the mutual dependence of OsTKPR2 and OsTKPR1 for their full biochemical activities
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