  We report on the possibility of valley number fractionalization in graphene
with a topological defect that is accounted for in Dirac equation by a
pseudomagnetic field. The valley number fractionalization is attributable to an
imbalance on the number of one particle states in one of the two Dirac points
with respect to the other and it is related to the flux of the pseudomagnetic
field. We also discuss the analog effect the topological defect might lead in
the induced spin polarization of the charge carriers in graphene.
