  I have compiled observations of [OIII] 5007 line and 5GHz radio emission for
a large sample of GPS, CSS and FR sources. Several properties were studied and
compared. The most relevant findings are that the FWHM and the luminosity of
the [OIII] 5007 line are correlated with the size of the radio source. I
present the data and discuss the correlations, with special focus on jet-host
interaction, triggering and enhancing of [OIII] 5007 emission.
