- Information
- Symbol: OsSSIIIa,Flo5
- MSU: LOC_Os08g09230
- RAPdb: Os08g0191433
- Publication
- Knockout of a starch synthase gene OsSSIIIa/Flo5 causes white-core floury endosperm in rice Oryza sativa L., 2007, Plant Cell Rep.
- Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice Oryza sativa L. uncovers interactive effects on the physicochemical properties of starch, 2011, Genome.
- Deciphering starch quality of rice kernels using metabolite profiling and pedigree network analysis, 2012, Mol Plant.
- Characterization of SSIIIa-deficient mutants of rice: the function of SSIIIa and pleiotropic effects by SSIIIa deficiency in the rice endosperm, 2007, Plant Physiol.
- Critical roles of soluble starch synthase SSIIIa and granule-bound starch synthase Waxy in synthesizing resistant starch in rice., 2016, Proc Natl Acad Sci U S A.
- Loss of function of SSIIIa and SSIIIb coordinately confers high RS content in cooked rice., 2023, Proc Natl Acad Sci U S A.
- Genbank accession number
- Key message
- Hence, the OsSSIIIa (Oryza sativa SSIIIa) mutations are referred to as white-core floury endosperm 5-1 (flo5-1) and flo5-2
- Based upon their X-ray diffraction patterns, the crystallinity of the starch in the flo5 mutant endosperm is decreased compared with wild type
- Through determination of the chain-length distribution of the mutant endosperm starch, we found that flo5-1 and flo5-2 mutants have reduced the content of long chains with degree of polymerization (DP) 30 or greater compared with the controls
- This suggests that OsSSIIIa/Flo5 plays an important role in generating relatively long chains in rice endosperm
- In addition, DP 6 to 8 and DP 16 to 20 appeared to be reduced in endosperm starch of flo5-1 and flo5-2, whereas DP 9 to 15 and DP 22 to 29 were increased in these mutants
- We propose a distinct role for OsSSIIIa/Flo5 and the coordinated action of other SS isoforms during starch synthesis in the seed endosperm of rice
- Knockout of a starch synthase gene OsSSIIIa/Flo5 causes white-core floury endosperm in rice (Oryza sativa L.)
- Connection
- ALK~SSIIa, OsSSIIIa~Flo5, Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice Oryza sativa L. uncovers interactive effects on the physicochemical properties of starch, To study the potential functional interactions of SS genes, we generated SSIIa/SSIIIa double repression lines whose kernels displayed a chalky kernel appearance and had increased amylose levels, increased pasting temperatures, and decreased viscosities
- ALK~SSIIa, OsSSIIIa~Flo5, Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice Oryza sativa L. uncovers interactive effects on the physicochemical properties of starch, Consistent with their expression domains, RNAi repression of genes that encode isozymes SSI, SSIIa, and SSIIIa had strong effects on grain development, whereas no obvious phenotypic changes were observed in transgenic plants with the other SS genes being RNAi repressed, indicating functional redundancies among the genes
- ALK~SSIIa, OsSSIIIa~Flo5, Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice Oryza sativa L. uncovers interactive effects on the physicochemical properties of starch, The nonadditive nature of the double mutation line suggests that SSIIa and SSIIIa interact with each other during starch synthesis
- ALK~SSIIa, OsSSIIIa~Flo5, Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice Oryza sativa L. uncovers interactive effects on the physicochemical properties of starch, Collectively, the data showed that SSIIa and SSIIIa play distinctive, but partially overlapping, roles during rice grain starch synthesis
- ALK~SSIIa, OsSSIIIa~Flo5, Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice Oryza sativa L. uncovers interactive effects on the physicochemical properties of starch, Double repression of soluble starch synthase genes SSIIa and SSIIIa in rice (Oryza sativa L.) uncovers interactive effects on the physicochemical properties of starch
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