- Information
- Symbol: FLO2
- MSU: LOC_Os04g55230
- RAPdb: Os04g0645100
- Publication
- Genetic analysis of endosperm mutants in rice Oryza sativa L, 1991, Theor Appl Genet.
- A novel factor FLOURY ENDOSPERM2 is involved in regulation of rice grain size and starch quality, 2010, Plant Cell.
- Three novel alleles of FLOURY ENDOSPERM2 FLO2 confer dull grains with low amylose content in rice., 2014, Plant Sci.
- Generation of new rice germplasms with low amylose content by CRISPR/CAS9-targeted mutagenesis of the FLOURY ENDOSPERM 2 gene., 2023, Front Plant Sci.
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Genbank accession number
- Key message
- The rice flo2 mutation resulted in reduced grain size and starch quality
- These results suggest that FLO2 plays a pivotal regulatory role in rice grain size and starch quality by affecting storage substance accumulation in the endosperm
- FLO2 was abundantly expressed in developing seeds coincident with production of storage starch and protein, as well as in leaves, while abundant expression of its homologs was observed only in leaves
- The flo2 mutation decreased expression of genes involved in production of storage starch and storage proteins in the endosperm
- Differences between cultivars in their responsiveness of FLO2 expression during high-temperature stress indicated that FLO2 may be involved in heat tolerance during seed development
- Map-based cloning identified FLOURY ENDOSPERM2 (FLO2), a member of a novel gene family conserved in plants, as the gene responsible for the rice flo2 mutation
- Overexpression of FLO2 enlarged the size of grains significantly
- The effect of the flo2 mutations on the physicochemical properties of the grain included a low breakdown, setback, and consistency of rice, indicating a good elasticity and soft texture of cooked rice grains
- The allelic diversity of flo2 perturbed the expression of starch synthesis-related genes including OsAGPL2, OsAGPS2b, OsGBSSI, OsBEI, OsBEIIb, OsISA1, and OsPUL
- Physiochemical analyses of the flo2 mutants were congruent with previous studies, exhibiting lowered AC and viscosity, risen gel consistency (GC) and gelatinization temperature (GT) values, which were all instrumental to the improvement of ECQ
- The diversity of flo2 allele is attributable for the variations in grain appearance, amylose content (AC), and physicochemical properties, influencing the eating and cooking quality (ECQ) of rice
- Connection
- FLO2, OsAPS2~OsAGPS2b, Three novel alleles of FLOURY ENDOSPERM2 FLO2 confer dull grains with low amylose content in rice., The allelic diversity of flo2 perturbed the expression of starch synthesis-related genes including OsAGPL2, OsAGPS2b, OsGBSSI, OsBEI, OsBEIIb, OsISA1, and OsPUL
- FLO2, OsBEIIb~OsSBEIIb, Three novel alleles of FLOURY ENDOSPERM2 FLO2 confer dull grains with low amylose content in rice., The allelic diversity of flo2 perturbed the expression of starch synthesis-related genes including OsAGPL2, OsAGPS2b, OsGBSSI, OsBEI, OsBEIIb, OsISA1, and OsPUL
- FLO2, OsISA1~OsPHS8, Three novel alleles of FLOURY ENDOSPERM2 FLO2 confer dull grains with low amylose content in rice., The allelic diversity of flo2 perturbed the expression of starch synthesis-related genes including OsAGPL2, OsAGPS2b, OsGBSSI, OsBEI, OsBEIIb, OsISA1, and OsPUL
- FLO2, OsPUL, Three novel alleles of FLOURY ENDOSPERM2 FLO2 confer dull grains with low amylose content in rice., The allelic diversity of flo2 perturbed the expression of starch synthesis-related genes including OsAGPL2, OsAGPS2b, OsGBSSI, OsBEI, OsBEIIb, OsISA1, and OsPUL
- FLO2, FLOC1, A novel FLOURY ENDOSPERM2 FLO2-interacting protein, is involved in maintaining fertility and seed quality in rice., A protein, which we named FLOC1, interacted with FLO2
- FLO2, FLOC1, A novel FLOURY ENDOSPERM2 FLO2-interacting protein, is involved in maintaining fertility and seed quality in rice., these findings imply that there is a difference in the functions of FLO2 and FLOC1 although both of appear to be involved in the control of seed quality during seed formation
- FLO2, OsLEA5, Overexpression of rice OsLEA5 relieves the deterioration in seed quality caused by high-temperature stress., OsLEA5 (Lea14A) interacts with a regulator of the endosperm storage production, FLO2, suggesting that OsLEA5 may be involved in endosperm quality control
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