We proposed that the appearance of strain HTS1 was responsible partly for the protein expression decrease during the preservation.
2
经6次传代培养后,其生物量和菌丝多糖产量较稳定,且明显超过原始菌株,表明其遗传稳定性良好。
After continuous cultivation for 6 generations, the biology yield and the polysaccharide yield were steady and obviously exceeded the original strain. It showed a good genetic stability.
3
采用中国鉴别寄主对突变体的毒性研究表明,各突变菌株的毒性均较原始菌系发生了明显改变。
Infection assay of mutants on Chinese differential host shows that virulence of all the mutants changes significantly in contrast with wild-type isolates.