  We report the anisotropic magneto-transport measurement on a non-compound
band semiconductor black phosphorus (BP) with magnetic field B up to 16 Tesla
applied in both perpendicular and parallel to electric current I under
hydrostatic pressures. The BP undergoes a topological Lifshitz transition from
band semiconductor to a zero-gap Dirac semimetal state, characterized by a weak
localization-weak antilocaliation transition at low magnetic fields and the
emergence of a nontrivial Berry Phase of detected by SdH magneto-oscillations
in magnetoresistance curves. In the transition region, we observe a
pressure-dependent negative MR only in the B//I configuration. This negative
longitudinal MR is attributed to the Adler-Bell-Jackiw anomaly (topological
E$\cdot$B term) in the presence of weak antilocalization corrections.
