营养缺陷型的,营养缺陷的
The results showed that the strain was a L-cysteine auxotrophic strain.This method has laid a foundation for screening an auxotrophic mutant. 结果表明，该菌株为L-半胱氨酸缺陷型菌株，为营养缺陷型突变株的筛选奠定了基础。
The isolation of these mutants would provide a useful auxotrophic marker to facilitate the development of an efficient host-vector system in K.lactis. 这为在克鲁氏乳酸酵母中构建有效的宿主-载体系统提供了一个有用的营养缺陷型选择标记。
An auxotroph requires, in addition to the principal carbon source, one or more organic nutrients. 缺陷营养生物除需要主要碳源外，还需要一种或几种有机养料。
Here we apply the system to the determination of gene function using deletion mutants of yeast (Saccharomyces cerevisiae) and auxotrophic growth experiments. 通过使用人工智能研究中的教训制造出机器人，它能够自动地创造事实假设来解释数据，修正实验以验证其假设，并且能指导实验室的机器人完成试验。
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. 以谷氨酸棒杆菌AS1542为出发菌株，经过硫酸二乙酯诱变和紫外原生质体诱变，定向选育出一株稳定的色氨酸生产菌T11－6，该菌株具有苯丙氨酸、酪氨酸双重营养缺陷及对氟苯丙氨酸、5-甲基色氨酸、6-氟色氨酸三种结构类似物抗性遗传标记。
