  Planetary ephemerides are a very powerful tool to constrain deviations from
the theory of General Relativity using orbital dynamics. The effective field
theory framework called the Standard-Model Extension (SME) has been developed
in order to systematically parametrize hypothetical violations of Lorentz
symmetry (in the Standard Model and in the gravitational sector). In this
communication, we use the latest determinations of the supplementary advances
of the perihelia and of the nodes obtained by planetary ephemerides analysis to
constrain SME coefficients from the pure gravity sector and also from
gravity-matter couplings. Our results do not show any deviation from GR and
they improve current constraints. Moreover, combinations with existing
constraints from Lunar Laser Ranging and from atom interferometry gravimetry
allow us to disentangle contributions from the pure gravity sector from the
gravity-matter couplings.
