SPP

• Symbol: SPP
• MSU: LOC_Os06g41990
• RAPdb: Os06g0625400

• A rice stromal processing peptidase regulates chloroplast and root development, 2010, Plant Cell Physiol.

Genbank accession number

• The present results reveal that SPP is essential for chloroplast biogenesis at the early growth stage and for rice root development; this is the first report on the function of SPP in monocot plants
• Subcellular localization analysis indicates that SPP is targeted to the chloroplast
• The expression of some genes associated with chloroplast development was decreased in young seedlings of the spp mutant, but not in 14-day-old seedlings
• Western blot analysis revealed that the Rubisco small subunit is not precisely processed in the spp mutant in 7-day-old seedlings, but the processing activity in the spp mutant is restored in 14-day-old seedlings

• FZP~BFL1~SGDP7~PAA7, SPP, Duplication of an upstream silencer of FZP increases grain yield in rice., The CNV-18bp duplication repressed FZP expression, prolonged the panicle branching period and increased grain yield by more than 15% through substantially increasing the number of spikelets per panicle (SPP) and slightly decreasing the 1,000-grain weight (TGW)
• FZP~BFL1~SGDP7~PAA7, SPP, Duplication of an upstream silencer of FZP increases grain yield in rice., These findings showed that the silencer CNVs coordinate a trade-off between SPP and TGW by fine-tuning FZP expression, and balancing the trade-off could enhance yield potential
• OsDER1, SPP, OsDER1 is an ER-associated protein degradation factor that responds to ER stress., Furthermore, OsDER1 associated with the signal peptide peptidase (SPP), a homologue of a component of the alternative ERAD pathway recently identified in yeast and mammals
• OsGBF1, SPP, Identification of splice variant of OsGBF1 in Oryza sativa ssp. indica genotypes under salinity stress., In this study, we analyzed the expression of OsGBF1 during salt stress in two contrasting Oryza sativa spp