  Shot noise reduction in quantum wires is interpreted within the model for the
''0.7 structure'' in the conductance of near perfect quantum wires [T. Rejec,
A. Ramsak, and J.H. Jefferson, Phys. Rev. B 62, 12985 (2000)]. It is shown how
the Fano factor structure is related to the specific structure of the
conductance as a consequence of the singlet--triplet nature of the resonances
with the probability ratio 1:3. An additional feature in the Fano factor,
related to the ''0.25 structure'' in conductance, is predicted.
