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Fig. 9 | Rice

Fig. 9

From: Determinant Factors and Regulatory Systems for Anthocyanin Biosynthesis in Rice Apiculi and Stigmas

Fig. 9

Working models of apiculus and stigma coloration in rice. Both OsC1 and OsDFR had extremely high expression levels in both apiculus and stigmas, whereas OsPa and OsPs were more strongly expressed in the respective apiculi and stigmas. When all of OsC1, OsDFR, OsPa and OsPs were functional the OsC1-OsPa-OsPAC1 and OsC1-OsPs-OsPAC1 complexes activated expression of OsDFR resulting in purple apiculi and purple stigmas, respectively. When OsC1 was not functional, it affected complex formation, therefore decreasing the expression of OsDFR and leading to non-pigmented apiculi and stigmas. When OsDFR was not functional, there was no stigma color and apiculi were brown. When OsPa or OsPs were nonfunctional, both apiculi and stigmas were non-pigmented. OsC1, OsPa and OsPs represented functional proteins corresponding to the products of OsC1, OsPa and OsPs, respectively. osc1, ospa and osps represented nonfunctional products of the OsC1, OsPa and OsPs loci, respectively. OsDFR and osdfr represented functional and nonfunctional OsDFR, respectively. Solid ellipse, interaction of the protein inside with the other had been confirmed; dashed ellipse, interaction of the protein inside with the other needed to confirm

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