Both live bacteria and culture supernatant significantly
(P¼0.05) suppressed production of P. capsici zoospores (Table 3).
When live bacterial cells from Pseudomonas sp. B-10 were added to
the mycelial block of P. capsici, only 29% zoospore was released
than that of untreated control, which was considered 100%. This
was the lowest percentage of zoospore release among all three
treatments comprising either bacterial cells or culture supernatant
from selected Pseudomonas isolates. However, 47% zoospores were
produced when cell-free culture supernatant of B-10 was added to
the mycelial blocks. Zoospores produced in presence of live bacteria
and cell-free culture supernatant of B-17 was 31% and 45%,
respectively. Among the isolates, B1 was least effective in suppressing
release of zoospores. Treatment of P. capsici mycelial
blocks by B1 live bacteria and culture supernatant allowed 45%
and 62% zoospore release, respectively. In general, live bacterial
cells were stronger inhibitor of zoospore production than those of
the culture supernatant.