- Information
- Symbol: sps1,SPS,OsSPS1
- MSU: LOC_Os01g69030
- RAPdb: Os01g0919400
- Publication
- Characterization of a rice sucrose-phosphate synthase-encoding gene, 1996, Gene.
- The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose, 2013, Front Plant Sci.
- Tissue-specific and developmental pattern of expression of the rice sps1 gene, 2000, Plant Physiol.
- Identification of a new gene controlling plant height in rice using the candidate-gene strategy, 2004, Planta.
- A reduction of sucrose phosphate synthase SPS activity affects sucrose/starch ratio in leaves but does not inhibit normal plant growth in rice., 2016, Plant Sci.
- Genbank accession number
- Key message
- In agreement with this hypothesis, transgenic rice plants with a maize SPS gene that had about 3 times the SPS activity of that in Nipponbare (control plants) were significantly taller than Nipponbare from the early growth stage
- A rice genomic clone (sps1) coding for sucrose phosphate synthase (SPS) was isolated and sequenced
- The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose
- The higher level of SPS transcripts and the activity of SPS in NIL6 compared to control plants, and the fact that the relative SPS activity per SPS protein content was almost the same between NIL6 and Nipponbare suggested that the higher plant height in NIL6 compared to Nipponbare was due to the high SPS activity in NIL6
- During leaf development, the sps1 promoter directs a basipetal pattern of expression that coincides with the distribution of SPS activity during the leaf sink-to-source transition
- It was also found that during the vegetative part of the growth cycle, SPS expression and enzymatic activity are highest in the youngest fully expanded leaf
- Analysis of rice sps1 expression showed that mRNA levels change during leaf development
- It was found that the expression of the rice sps1 gene is limited to mesophyll cells in leaves, the scutellum of germinating seedlings, and pollen of immature inflorescences
- SPS plays a central role in the production of sucrose in photosynthetic cells and in the conversion of starch or fatty acids into sucrose in germinating seeds
- Our previous study on the expression of the sucrose phosphate synthase gene family in rice (OsSPSs) suggested the involvement of sucrose sensing and/or circadian rhythm in the transcriptional regulation of OsSPS
- SPS activity and mRNA were undetectable in roots
- In a double knockout mutant of OsSPS1 and OsSPS11 (sps1/sps11), an 84% reduction in leaf SPS activity resulted in higher starch accumulation in the leaves than in the wild-type leaves
- The knockdown and knockout mutants of OsSPS1 showed a 29-46% reduction in SPS activity in the leaves, but the carbohydrate content in the leaves and plant growth were not significantly different from those of wild-type plants
- Connection
- OsSPS11, sps1~SPS~OsSPS1, The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose, To examine whether the promoters of OsSPSs can be controlled by sugars and circadian clock, we produced transgenic rice plants harboring a promoter-luciferase construct for OsSPS1 or OsSPS11 and analyzed the changes in the promoter activities by monitoring bioluminescence from intact transgenic plants in real-time
- OsSPS11, sps1~SPS~OsSPS1, The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose, Under the light-dark cycle, both OsSPS1 and OsSPS11 promoter activities were low in the dark and increased rapidly after the beginning of the light period
- OsSPS11, sps1~SPS~OsSPS1, The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose, When the transgenic rice plants were moved to the continuous light condition, both P OsSPS1 ::LUC and P OsSPS11 ::LUC reporter plants exhibited circadian bioluminescence rhythms; bioluminescence peaked during the subjective day with a 27-h period: in the early morning as for OsSPS1 promoter and midday for OsSPS11 promoter
- OsSPS11, sps1~SPS~OsSPS1, The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose, The promoter activities of sucrose phosphate synthase genes in rice, OsSPS1 and OsSPS11, are controlled by light and circadian clock, but not by sucrose
- OsSPS11, sps1~SPS~OsSPS1, A reduction of sucrose phosphate synthase SPS activity affects sucrose/starch ratio in leaves but does not inhibit normal plant growth in rice., In a double knockout mutant of OsSPS1 and OsSPS11 (sps1/sps11), an 84% reduction in leaf SPS activity resulted in higher starch accumulation in the leaves than in the wild-type leaves
- OsSAC1, sps1~SPS~OsSPS1, Mutation of the OsSAC1 gene, which encodes an endoplasmic reticulum protein with an unknown function, causes sugar accumulation in rice leaves., Extremely more OsAGPL1 and OsAGPS1 (responsible for starch synthesis) expression and significantly less OscFBP1, OscFBP2, OsSPS1, and OsSPS11 (responsible for sucrose synthesis) and OsSWEET11, OsSWEET14, and OsSUT1 (responsible for sucrose loading) expression occurred in ossac1 source leaves than in WT source leaves
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