a) Luminosity-metallicity and b) mass-metallicity relations for VUDS EELGs and SFDGs from the literature. Metallicity differences with respect to the extrapolation to low stellar mass of the FMR by Andrews & Martini (2013) and Mannucci et al. (2011) are shown in c) and d), respectively. Dashed lines indicate 1σ deviations for these relations. Colors and symbols are as in Fig. 3. The data have been homogenized to the Chabrier IMF and the same strong-line metallicity calibration presented in Sect. 3.1.