營(yíng)養(yǎng)缺陷型的,營(yíng)養(yǎng)缺陷的

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(zhǎng)-半胱氨酸缺陷型菌株，為營(yíng)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(gè)有用的營(yíng)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(yíng)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(dòng)地創(chuàng)造事實(shí)假設(shè)來解釋數(shù)據(jù)，修正實(shí)驗(yàn)以驗(yàn)證其假設(shè)，并且能指導(dǎo)實(shí)驗(yàn)室的機(jī)器人完成試驗(yàn)。

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(yíng)養(yǎng)缺陷及對(duì)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。