Though rhizobacteria
are recognized to have a great and often
favorable impact upon plant development (Cacciari
et al., 1989; Noel et al., 1996; Dileep et al., 1998),
only three papers of Wilkinson et al. (1989,
1994a, b) considering isolation of endophytic bacteria
from the roots of terrestrial Pterostylis
vittata were published.