Comparison the central intersect oxygen abundances estimated from the metallicity gradient determined on the base of the IFU spectroscopy from the MaNGA, (O/H)_{0, intersect}, and the local central oxygen abundances obtained from the single-fibre observations from the SDSS, (O/H)_SDSS. Panel a: (O/H)_SDSS as a function of the (O/H)_{0, intersect}. The grey circles denote all the galaxies, the blue plus signs mark the cSB galaxies, and the line is one-to-one correspodance. Panel b: Normalised histogram of the differences Δ(O/H) = log(O/H)_SDSS – log(O/H)_{0, intersect} for our sample of galaxies. Panel c: Difference Δ(O/H) as a function of the gradient slope. The grey circles denote all the galaxies, the red plus signs mark the cSB galaxies, The red circles denote the median values of the ΔO/H in bins of 0.1 in the gradient slope, and the bars show the scatter in the ΔO/H about the median value in the bins.