secretion of stemofoline into the medium, while 1 , 2 -
didehydrostemofoline was not found to be released into
the medium. In an earlier study, the extracellular
accumulation of plumbagin was found in chitosan treated
cell cultures of Plumbago rosea L. These results indicated
that chitosan enhanced the permeability of plumbagin
from the cell to the exterior (Komaraiah et al., 2002).For
the yeast extract experiments, the effect of this elicitor on
root growth is shown in Fig. 3a. Yeast extract similarly