常見例句The results showed that the strain was a L-cysteine auxotrophic strain.This method has laid a foundation for screening an auxotrophic mutant. 結(jié)果表明,該菌株為L-半胱氨酸缺陷型菌株,為營養(yǎng)缺陷型突變株的篩選奠定了基礎(chǔ)。The isolation of these mutants would provide a useful auxotrophic marker to facilitate the development of an efficient host-vector system in K.lactis. 這為在克魯氏乳酸酵母中構(gòu)建有效的宿主-載體系統(tǒng)提供了一個有用的營養(yǎng)缺陷型選擇標(biāo)記。An auxotroph requires, in addition to the principal carbon source, one or more organic nutrients. 缺陷營養(yǎng)生物除需要主要碳源外,還需要一種或幾種有機(jī)養(yǎng)料。Here we apply the system to the determination of gene function using deletion mutants of yeast (Saccharomyces cerevisiae) and auxotrophic growth experiments. 通過使用人工智能研究中的教訓(xùn)制造出機(jī)器人,它能夠自動地創(chuàng)造事實假設(shè)來解釋數(shù)據(jù),修正實驗以驗證其假設(shè),并且能指導(dǎo)實驗室的機(jī)器人完成試驗。The reverse frequency of donor and receptor for auxotroph and resistance is less than 10~(-9), protoplast transformation is carried out in SMM containing 30% oolyethene glycol (MW 6000) and 20mg/ml DNA at controtledtime and temperature. 轉(zhuǎn)化子有的是原養(yǎng)型,有的在含利福平(10單位/亳升)和鏈霉素(200單位/亳升)的培養(yǎng)基上能生長,也有的兼而有之。Original strain, Corynebacterium glutamicum AS1542, was mutanted by DES and UV. protoplast irradiation. Finally, a higher L-tryptophan producing strain,T11-6 was obtained. It was a double auxotroph of phenylalanine and tyrosine. 以谷氨酸棒桿菌AS1542為出發(fā)菌株,經(jīng)過硫酸二乙酯誘變和紫外原生質(zhì)體誘變,定向選育出一株穩(wěn)定的色氨酸生產(chǎn)菌T11-6,該菌株具有苯丙氨酸、酪氨酸雙重營養(yǎng)缺陷及對氟苯丙氨酸、5-甲基色氨酸、6-氟色氨酸三種結(jié)構(gòu)類似物抗性遺傳標(biāo)記。 返回 auxotrophic