突變體細菌 的英文怎麼說
中文拼音 [tūbiàntǐxìjūn]
突變體細菌
英文
mutant bacteria-
The bacilliform cell penetrate into interior of the fibre to degrade the cellulose strongly and produced a mass of sticky polysaccharides. after cultured 48 hours, the bacilliform cell ' s surface of sporocytophaga have a great change. at this stage the bacilliform produce a lot of sticky polysaccharides. these sticky polysaccharides associated with the sites where the filter paper was decomposed intensively and form thorns on the surface of the bacillium. at the same time, the filter - paper weight loss is the greatest and decomposing rate is the fastest, so we think that the sticky polysaccharides are produced during the cellulose degradation
培養48小時，桿狀細胞的表面結構發生很大的變化，此時的菌體表面已產生大量的粘性多糖，這些粘性多糖因菌體在纖維素表面滑動而在菌體表面形成突起，即在纖維素被旺盛降解部位的菌體表面產生了大量突起；而產生突起的菌體深入到纖維素分子內部，纖維素表面可以清晰地看到由於菌體嵌入纖維素分子內部而留下的凹陷。The aglycone, steviol, exhibited greater acute toxicity than stevioside in hamsters but not in rats. steviol was clearly genotoxic after metabolic activation, inducing forward mutations in bacteria and gene mutations and chromosomal aberrations in lung fibroblasts of chinese hamsters
甜菊醇經過代謝活化后，基因毒性明顯，可引致細菌產生正向突變，以及使中國倉鼠的肺纖維原細胞產生基因突變和染色體變異。Over - expression of yggg retarded the cell cycle, on the point after dna partition, resulting in accumulation of diploid as bacteria stop division and sequentially went to death. this appearance is similar to that of the era mutants, including the partially defective in era gtpase activity or the reduced in the synthesis of wild - type era which bacteria become arrested in the cycle at the predivisional two - cell stage
在熒光顯微鏡下細菌形態的變化，以及dapi染色和透射電子顯微鏡觀察， yggg的表達與era突變（使era功能降低時）對細菌分裂的影響有類似之處，即細菌dna合成，子代dna分離后；分裂停滯，形成細菌繁殖受阻時， 2 - 4倍體的出現。
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