查询词典 mutants

Acremonium. However, low frequency of integrative genetic transformation is a major obstacle to gene cloning in Cephalosporium acremonium, for example, screening and identification of genes from a DNA bank by complementation of blocked mutants, knock out or replacement of genes.

过去的一些研究表明质粒对顶头孢霉的转化率太低，限制了许多分子生物学技术的应用，如利用互补突变株从顶头孢霉的DNA文库筛选和鉴别基因、基因敲除或者基因替换。

After inoculating Chenopodium amaranticolor and Vigna sinensis with in vitro transcripts, mutants resulting from the p82 fragment exchanges and wild type virus were observed for phenotypic changes, but the symptoms and host range were not altered.

体外转录物分别接种苋色藜和豇豆，观察互换复制酶变异片段重组体的寄主范围及所造成的症状。

Seedlings of these mutants subjected to chilling stress became chlorotic and had half the chlorophyll content of wild-type.

这些突变种的幼苗株在遭受低温胁迫时，比起野生型，叶绿素含量少了一半。

The C~6_0~0-ray, 5-FU and high Temperatuve have been used respectivly or combinedly To treat Some of the Species in the experiment. We have obtained some mutants from the wild type ...

我们从黄曲霉野生型菌株中获得到一些变异株，L-苹果酸产生菌株黄曲霉T18具有抗Zn~(++和耐高温在适宜条件下摇瓶中积累L-苹果酸3.31克/分升，总淀粉重量转化率为30%。

Genetic control of meiosis of rice, Oryza sativa L. II. Cytological analysis of desynaptic mutants.

起源于籼稻体细胞培养的联会消失变异的细胞遗传学研究。

Analysis of PcG mutants shows that the PcG system represses genes required for anteroposterior, dorsoventral, and proximodistal patterning of imaginal discs and that it also represses cell cycle regulator genes.

对PcG突变体研究发现，PcG系统表达基因在幼虫发育的前端、背腹以及远端模式都是必须的，同时可抑制细胞分裂调节基因的活性。

This work might lead to develop many better methods or means of preventing and controlling dysenteric diarrhea.To elucidate the role of H-NS protein in bacterial physiology, the hns gene insertion and deletion mutants were constructed with RecA and Red recombination system. Then, growth curve and invasion ability of wild strain and deletion mutant were studied.

为了更深入的了解hns基因在细菌生命活动中所起的作用，我们首先利用RecA重组系统构建了痢疾杆菌2457T hns基因的插入突变体；随后，对基于Red重组系统的痢疾杆菌2457T缺失突变体的构建方法进行了摸索并成功地敲除了hns、hdeA、hdeB、yhiE和yhiF 5个基因，研究表明延长同源臂的长度可以明显提高同源重组的效率，缩短构建缺失突变体所需的时间。

Our three groups in SCBB will conduct one project in this grant (three projects in this grant total), which is "Screen mutants interfering the development or regeneration of endodermal organs and study their functional mechanisms". In this project, stem cell and zebrafish will be used as models to elucidate the mechanisms of the development of endodermal organs.

我院的三个课题组负责此项目的课题三《正向遗传突变筛选具有内胚层器官发育或再生缺陷的突变体及致变基因的功能机制研究》，将采用干细胞和斑马鱼模型，研究内胚层器官的机制，特别是分子调节网络的整体性和时空性，为防治肝脏和胰腺的重大疾病提供坚实的理论基础。

We suggest the low enzymatic activity of these mutants is due to the conformational change.

因此，我们认为这些突变株的低水解活性是由於其蛋白构型改变所导致。

Compared to the wild type, the mutants' resistant capacity to Cu~(2+) declined and indicates that the Copper-transporting P-type ATPase gene plays an important role in resistance to heavy metal ion such as Cu~(2+) in filaceous fungi Penicillium janthinillum GXCR

对突变体进行抗铜水平检测发现抗Cu~(2+)能力与野生型对照有下降，表明铜转运P型ATP酶基因在丝状真菌微紫青霉菌Penicillium janthinillum GXCR的抗铜能力上起一定作用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。