The data here showed that Bacillus sp. CHM1 could be a potential agent to protect maize, horsebean, cole and rice (Oryza sativa)plants from infection by pathogenic fungi in vivo and had properties as a plant growth-promoting endophytic bacterium (PGPE).
In order to obtain better control efficacy against some pathogenic
fungi and a greater plant growth-promoting effect, PGPR or
PGPE must be rhizospheric competent, able to survive and colonize
in the rhizospheric soil (Cattelan et al., 1999). However,
various environmental factors, including climate, weather conditions,
soil characteristics or the composition or activity of the
indigenous microbial flora of the soil, may affect their growth and
exert their effect on the plant under field conditions, though some
good results could be obtained under laboratory conditions. It has
become necessary to develop more efficient PGPR or PGPE
bacterial strains under laboratory and field conditions
Therefore, keeping in view the above constraints, the present
study was aimed at testing one isolated strain, CHM1, belonging to
species of Bacillus, for its
control efficacy against plant pathogenic fungi by way, of in vitro screening and for its
plant growth-promoting activities. Endophytic characteristics
of CHM1 were also further investigated by double-resistance
tag. The data in this study provided for the possible development of
CHM1 as a microbial pesticide.