In conclusion, E. coli injection has lead to a significant increase in THCs as compared to the control. The inject-tion effect of E. coli improved the immune system of the larvae as a result of the larval immune response when compared with the injection effect of B. thuringiensis. This was observed in the increase in the total number of haemocytes, the activity of Corpora allata gland and Juvenile hormone secretion as an immune stimulant.
The results demonstrated that B. thuringiensis induced the host strong response. Huang et al. (2009) suggested that injection of B. mori with Bacillus bombysepticus (Bb) caused a lot of basal metabolic pathways which were sig-nificantly modulated. Furthermore, genes of juvenile hormone synthesis and related metabolism showed up regulation, suggesting that juvenile hormone participate in host modulation during the infection. Moreover, host cellular and systemic immune responses are also induced. Similar to B. thuringiensis (Bt), Bb can also induce a silkworm poisoning-related response.
In conclusion, E. coli injection has lead to a significant increase in THCs as compared to the control. The inject-tion effect of E. coli improved the immune system of the larvae as a result of the larval immune response when compared with the injection effect of B. thuringiensis. This was observed in the increase in the total number of haemocytes, the activity of Corpora allata gland and Juvenile hormone secretion as an immune stimulant.The results demonstrated that B. thuringiensis induced the host strong response. Huang et al. (2009) suggested that injection of B. mori with Bacillus bombysepticus (Bb) caused a lot of basal metabolic pathways which were sig-nificantly modulated. Furthermore, genes of juvenile hormone synthesis and related metabolism showed up regulation, suggesting that juvenile hormone participate in host modulation during the infection. Moreover, host cellular and systemic immune responses are also induced. Similar to B. thuringiensis (Bt), Bb can also induce a silkworm poisoning-related response.
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