Fig. 12.14Frames from a videotaped sequence when a hypha of Botrytis cinerea(Bc) contacted a hypha of Pythium
oligandrum(Po) on a film of water agar. The times shown are from the start of recording (0 minutes).
Fig. 12.15Frame from a videotaped
sequence when Pythium oligandrum
(growing from top right) contacted
a hypha of Rhizoctonia solani. The
Pythiumhypha grew on, but within 5
minutes it branched at the contact
point and coiled round the Rhizoctonia
hypha. At about 49 minutes after the
initial contact, P. oligandrum pene-
trated the host hypha and caused the
protoplasm to coagulate.