诱变

To improve the nitrilase production,a strain of Rhodococcus rhodochrous was treated with UV radiation and LiCl,a mutant,tg1-A6,with higher nitrilase activity was obtained.

对实验室保存的1株产腈水解酶的Rhodococcus rhodochrous菌株采用氯化锂进行诱变处理，筛选得到了1株产酶活力较高的菌株tg1-A6。

Second, the time of the saccharomycetes which muted is 14～16hours.

在突变株发酵性能实验中，通过对酵母菌生长曲线的绘制和流加时间的确定，得到诱变后菌种的最佳培养时间为14～16小时。

The YY saccharomycetes was muted by diffent dosage heavy ion in the experiment, The data was analysied for obtaining the mold mushroom spawn lethality in 0.25~0.5GY, then through 3 steps screening, obtained the saccharomycetes which had grown well and beard the high consistence alcoho.

摘 要：本实验主要阐述了使用不同剂量的重离子对YY酵母菌进行辐照诱变选育耐酒精酵母的实验过程，结果表明：菌种致死率在0.25～0.5GY。

Using Sarcina lutea as original strain,a ethionine and zinc chloride-resistant mutant was screened after treated with UV.

通过对谷胱甘肽新产生菌———藤黄八叠球菌进行紫外诱变处理，筛选到一株抗乙硫氨酸和氯化锌的抗性菌株，该突变株发酵生产谷胱甘肽的产量比出发菌株提高268.9%。

The experiment system developed by us for rape, is being used for induction and screening of sclerotinia sclerotiorum resistant mutant and introduction of foreign gene into rape.

这一实验体系正在用于抗菌核病的诱变与筛选，并作为外源基因导入的实验体系。

The mutagentc effect on a stra in producing PHB by cooperation of UV and He-Ne laser［J］.

He-Ne激光和紫外线对PHB产生菌的复合诱变效应［J］。

The screening of high tannase producer and mutagenic effects of Aspergillus niger 9701 with low N + ions implantation were studied.

研究了单宁酸酶高产菌株的选育以及低能N+离子注入黑曲霉 970 1 (Aspergillusniger 970 1 )的诱变效应。

The results were as followed: 1 Mutagenesis Breeding of High Tannase Activity Strains and preparing of Tannase As a original strain, Asp. niger CY was mutated by UV treatment. One strain was obtained from the mutants.

全文实验结果如下： 1 单宁酶菌种的选育和单宁酶的制备以一株产单宁酶的黑曲霉为出发菌株，进行了菌株的诱变选育，得到了一株单宁酶高产菌株。

Of particular interest are:Toxic or biologically disruptive impacts of anthropogenic chemicals and by-products;Natural toxins and their impacts;Biotransformation and metabolism of toxigenic compounds, food chains for toxin accumulation or biodegradation;Assays of toxicity, endocrine disruption, mutagenicity, carcinogenicity, ecosystem impact and health hazard;Environmental and public health risk assessment, environmental guidelines, environmental policy for toxicants.

包括人为因素造成的污染；自然因素造成的污染，以及它们的破坏作用；生毒物质的生物转化和新陈代谢，导致毒素积累和生物降解的食物链；毒性、内分泌损害、诱变、致癌、生态系统影响和健康危机；为毒性环境和公众危机评估、环境指导、环境政策。

It proved that the mutations are generally the transformation or transversion but not the insertion or deletion.

本研究得出的初步结论或推论如下： 1）经过亚硝基胍和PCR诱变法获得的一系列突变体在核苷酸基础上只发生了点突变，由此导致其蛋白质的序列也只是发生了个别氨基酸的突变。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。