The Effect of Endophytic Streptomyces spp.
Inoculation on BLB Disease And Plant Growth. In planta
experiments showed that the area under the disease
progress curve (AUDPC) of the plants inoculated with
Streptomyces spp. and infected by Xoo was not
significantly different to the control. Isolate AB131-1 was
able to achieve the plant height with value of AUHPC
1546.3 and dry weight of 22.9 g/pot. This value was
compared with the control ( Xoo, Xoo and chemical
bactericide, and uninoculated) in Table 1. The growth of
rice plants inoculated with only Streptomyces spp. was
lower than the rice plants inoculated with Streptomyces
spp. and infected with Xoo. However, the density and the
spectrum of bacterial root endophytes was increased. This
data was similar with the result reported by Hallman and
Berg (2006).
The effect of endophytic Streptomyces spp. on the
number of tillers during observation was shown by the
calculation of the area under the number of tillers curve.
Accumulation of the number of tillers at 48 DAP was
significantly different. The plants inoculated with Dimp6-
1 had a higher number of tillers than the other treatment
groups. Although the effect of endophytic Streptomyces
spp. inoculation on increasing grain yield and plant dry
weight was not significantly different, the measurements
were still higher compared with the control group, the
group infected with Xoo, and chemical bactericide
application.