菌落突變 的英文怎麼說
中文拼音 [jūnlàtūbiàn]
菌落突變
英文
colonial mutation-
The distribution fractions of mutants with higher avermectin titer than the original had correlation with implantation dose. after ion implantation mutation there were many types of morphology of colony, we stdudied the relationship between the colony shape and the ability of yielding, found that gray and protuberant colony had the highest titer
離子注入后阿維鏈黴菌的菌落形態發生了很大的變化，其中灰色，邊緣整齊，中間突出有開裂的菌落和為灰色，邊緣波浪狀，中間突出有放射狀開裂的菌株產量較高。In this study, lexa mutant of deinococcus radiodurans xe has been successfully constructed. the survival curve of this strain was measured using colony formation assay after treatment with different doses of radiation and different times of mmc
本研究利用已構建的抗輻射菌lexa基因突變體菌株xe ，經受不同劑量射線照射和不同時間的mmc作用，平板菌落計數，繪制存活曲線。The morphological, physiological, biochemical and genetic diversities between bacillus thuringiensis wild - type strain ybt - 1463 and its plasmid - free mutant bmb171 was comparatively studied. it showed that the plasmid - free mutant strain bmb171 lost the ability to form the parasporal crystal, but there was on obvious diversities were observed on the sensitivity to 10 antibiotics, the utilization of 19 carbon sources and 12 nitrogen sources, as well as the growth properties between ybt - 1463 and bmb171, whereas the electro - transformation frequencies of bmb171 were much higher than those of ybt - 1463, respectively with 5 exogenous plasmids as the donor dnas
對出發菌株ybt - 1463和其無質粒突變株bmb171的部分形態、生理生化和遺傳學特性進行的比較研究的結果表明，突變株bmb171不形成伴胞晶體，但在個體形態與菌落特徵、對紅黴素等10種抗生素的敏感性、對葡萄糖等19種碳源和谷氨酸等12種氮源的利用能力及生長性能與出發菌株ybt - 1463無明顯差異。This system included method of solid medium plate enveloped with parafilm to form colony, conjugational gene transfer in a selective medium, screening the nonmagnetic mutants by magnet adsorption technique
此體系包括：以平板封膜培養技術獲得單菌落，在選擇性培養液中進行遺傳因子接合轉移，以液體培養和磁鐵吸附技術篩選突變子。Approximately 7000 colonies were screened. one mutant was obtained, and its enzyme activity is 2. 09 - fold higher than that of wild - type a - aldc in low temperature. the two nucleotide substitutions were occurred in the evolved a - aldc gene
根據定向進化的基本思想，我們利用易錯pcr的方法，篩選了近7000個菌落，最終得到了一株在低溫下也有較高酶活力的突變體。分享友人