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toxin production
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  毒素产生
     7. The optimum conditions for toxin production of P.parasitica were 62 medium, pH4-6, 25-28 , and culturing for 28 days.
     7.研究了寄生疫霉毒素产生的最适条件:G:培养液、pH值4一6,温度25一28℃及黑暗与光照交替条件下培养28天以上。
短句来源
     As to the Non-Host-pecific Toxins (NHST) researches were foc sed on the condition of toxin production and determination of the toxin content in the infected plants.
     非寄主专化性毒素(Non-Host-Specific Toxin,NHST)的研究着重在毒素产生的条件、生物活性测定、抗性鉴定以及检测被感染植物体的毒素含量等。
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     Effects of Nutrients and Microorganisms on the Growth and Toxin Production of Alexandrium Minutum
     氮、磷营养物质与微生物对微小亚历山大藻(Alexandrium Minutum)生长和毒素产生的影响
短句来源
     Factors Affecting Hyphae Growth and Toxin Production of Alternaria brassicae
     白菜黑斑病菌(Alternaria brassicae)菌丝生长和毒素产生条件的研究
短句来源
     The fittest conditions of ABW hyphae growth and toxin production were 20~22℃, pH4, light 12 hours one day, interval shaking culture, 3% sucrose as C resource and 13~15℃, pH6, dark, stilling culture, 10 % glucose as C resource respectively.
     而毒素产生的最佳条件是13~15℃、pH6、黑暗、静止和以葡萄糖(浓度为10%)为C源。
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  产生毒素
     gloeosporoides in the field. Czapek-Dox liquid medium are suitable for the growth and toxin production of the pathogen. The optimum temperature and pH for growth are 25-28℃ and pH 6, respectively.
     Czapek-Dox培养液适于枸杞炭疽病菌的生长和产毒,其适宜温度为25~28℃,初始pH为6,通气条件促进其生长和产生毒素
短句来源
     We further believe that trichothecenes are toxicto the fungus itself and that exposure to the toxins inhibits its growth and toxin production.
     分别在大米粒和小麦粒等固体培养基和葡萄糖-蛋白胨-酵母粉(GYEP)液体培养基上,MT12只产生少量毒素或不产生毒素
短句来源
     The influence exerted by culture conditions of 6 factors on toxin production of Magnaporthe grisea was detected with the method of inhibition of embryo-root growth.
     用抑制胚根生长法测定6种因素对稻瘟病菌产生毒素量的影响。
短句来源
     The experimental results indicated that the max toxin production of Ascochyta phaseolorum had been got in Chapek liquid medium, and the optical cultural condition were 25 ℃, continued light, pH 5~8, culture 26 days in succession.
     绿豆轮纹病菌(Ascochyta phaseolorum Sacc.) 在Czapek培养基上最易产生毒素,且以25℃,全光照。
短句来源
     The toxicity on culture liquid of T. roseum was determined by the method of inhibiting germination rate of muskmelon seeds. The results showed that 2 kinds of medium (PSC and PSC+5 % seed juices) were suitable for toxin production.
     采用白兰瓜种子发芽抑制试验测定了不同培养条件下粉红聚端孢(Trichotheciumroseum)培养滤液的毒性,结果表明:PSC和PSC+5%白兰瓜种子汁这两种培养基有利于该菌产生毒素,Richard产毒较少;
短句来源
  产毒
     The specific growth rates were 0.21, 0.21 and 0.16and the highest toxin content per cell were11.85, 14.64 and 12.86fmol/ml, respectively. But the effects of urea on the growth and toxin production of A.
     这三者培养的微小亚历山大藻生长和产毒量相似,生长速率分别为 0.16、0.21 和 0.21/d,最高细胞毒素含量分别为 12.86、14.64 和 11.85fmol/cell。
短句来源
     capsici growth and toxin production. The optimum temperature and pH for growth were 25℃ and pH6—7,respectively. The filtrates at 25—28℃ and pH6—7 were highly toxic.
     capsici的生长和产毒,生长适宜温度和范围分别为25℃和pH6—7,在25—28℃,pH6—7的条件下培养滤液毒性最强;
短句来源
     The results showed that the various strains were different in toxin production. CL-1,CL-2,CL-7,CL-13 strains were strong in the toxin production.
     结果表明:不同菌株的产毒能力存在明显差异,以CL-1、CL-2、CL-7、CL-13菌株培养液对叶片的破坏能力最强;
短句来源
     Strains TR2 and TR3 destroyed the aeciospores more distinctly than TR1. Strain TR1 possessed the highest ability to produce toxins in the culture liquid of PD, and the aeciospore walls could control its toxin production.
     TR1对锈孢子壁的破坏作用弱于TR2和TR3,但在PD培养液中有较强的产毒能力,锈孢子壁能抑制TR1菌株产毒
短句来源
     The N∶P atomic ratio at 100∶1 was determined as the optimum for growth and toxin production.
     适合铜绿微囊藻生长和产毒的氮磷比是100∶1(原子数比);
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  “toxin production”译为未确定词的双语例句
     At the same time,inhibition ofthe metabolic productof Ala and 73 a to toxin production and hypha growth of JC1 B and BP2 was obvious.
     同时,Ala、73a的代谢物对JC1B、BP2的产毒素和菌丝生长亦有明显的抑制作用。
短句来源
     High nitrogen concentration (test range, 1.6mg/L to 245.1mg/L) favored both growth of and toxin production by NIES-90 strain.
     高浓度的氮(1.6~245.1mg/L)有利于两藻株的生长及产毒株的毒素合成,而对磷、铁、锌的需求量较低。
短句来源
     For toxin production, the optimal conditions were: PGB liquid media, initial pH 5.5-6.0, initial inoculation 104 conidia/ml, temperature 28癈, 200rpm, seven days.
     选用尖角突脐孢菌32,研究了其产生毒素的最优条件为:在土豆液体培养基上,起始pH5.5—6,接种量10~4个孢子,培养温度28℃,摇床培养200rpm,培养时间7天。
短句来源
     Inhibition of Ala to toxin production of BP2 was the strongestwith the inhibition rate of5 1 97%,while to JC1 B,73 a had the strongestinhibition with the rate of72 6%.
     对JC1B产毒素能力抑制最强的是73a菌体,抑制率为7260%。
短句来源
     RNAⅢ acts primarily at the level of target gene transcription and independently regulated the transcription of exoprotein. RAP(RNAⅢ activating protein) is a -38KD S. aureus secretory protein which could activate the transcription of RNAⅢ in S. aureus. Now it was found that RAP activated the toxin production via its sensor TRAP (Target of RAP), a membrane-associated -21 kD protein.
     其调节过程为RAP蛋白(RNAⅢ activating protein)使其靶分子TRAP蛋白(Target of RAP)磷酸化,从而激活RNAⅢ的转录,上调外毒素的分泌。
短句来源
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  toxin production
Role of Temperate Bacteriophage 139 in Changing Cholera Toxin Production in Vibrio cholerae Classical Biovar
      
Toxin production was influenced by clindamycin, erythromycin, lincomycin, kanamycin and tetracycline without simultaneous changes in the number of cells; MN8 was more sensitive to clindamycin and lincomycin than W/MT strains.
      
Pseudomonas aeruginosa can cause false-positive identification of verotoxin (Shiga-like toxin) production by a commercial enzyme
      
Although the defective regulatory gene locus is associated with increased toxin production in vitro, the in vivo significance of this mutation and of the binary toxin remains undefined.
      
The procedures have been applied to the determination of toxin production in dinoflagellate cultures, field samples of red tides, and toxic mussels.
      
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Cercospora oryzae Miyake is the pathogen of the narrow brown leaf spot of rice. Twenty four isolates were screened by the bioassay of root growth inhibition for toxin production. The majority of culture filtrates exhibited the inhibitory effect on the radicle growth of rice seeds. Six isolates: I-16, I-26, I-28, I-38, I-42 and I-49 were selected for further study. Potato sucrose broth plus 10% rice juice (PSBE) favored isolate growth and toxin production. The ranges of optimum temperature and pH...

Cercospora oryzae Miyake is the pathogen of the narrow brown leaf spot of rice. Twenty four isolates were screened by the bioassay of root growth inhibition for toxin production. The majority of culture filtrates exhibited the inhibitory effect on the radicle growth of rice seeds. Six isolates: I-16, I-26, I-28, I-38, I-42 and I-49 were selected for further study. Potato sucrose broth plus 10% rice juice (PSBE) favored isolate growth and toxin production. The ranges of optimum temperature and pH for growth were 25—30℃ and pH 6—7 respectively. Light and aeration could stimulate growth. Temperature, light and aeration had no effect on the toxicity of the culture filtrates. The culture filtrates from culture at pH 6—7 showed the highest toxicity to radicle growth. The highest toxicity of culture filtrates occurred on the third week after inoculation, while the growth peak for most of isolates were on the fourth week. Partial characterization of the toxin was undertaken. The results illustrated that 6 isolates were capable of producing red pigment and yellow substance. Bed pigment was identified as cercosporin by thin layer chromatography, visible spectrum analysis and color reaction. Culture filtrates and cercosporin solution could inhibit the radicle growth on the seeds of different rice varieties and 4 crops (mungbean, sorghum, cowpea and corn). It also could induce chlorosis and necrosis on the injured leaf surface of rice seedings regardless of the varietal resistance, susceptibility, and seedling age.

水稻尾孢霉(Cercospora oryzae)是水稻条叶枯病的致病菌。24个菌株用抑制稻种胚根生长生物测定法进行产毒筛选。大部分菌株培养滤液对胚根生长有抑制作用。6个菌株:I-16,I-26,I-28,I-38,I-42和I-49选为进一步试验的菌株。添加10%稻叶汁马铃薯蔗糖培养液适于菌株的生长和产毒。生长适宜的温度和pH范围分别是25°-30℃和pH 6—7,光线和通气可促进菌株生长,但温度、光线和通气对培养滤液的毒性无影响,pH6—7的培养滤液毒性最强。接种后3周的培养滤液表现强毒性。多数菌株生长高峰出现在第4周。对水稻尾孢霉毒素进行了初步鉴定。结果表明菌株都能产生红色色素和黄色物质,红色色素经薄层色谱,可见光谱分析和颜色反应证明与尾孢霉毒素相同。培养滤液和尾孢霉毒素提取物能抑制稻种和4种作物种子胚根生长,并能在损伤稻叶上引起褪绿和枯死。这一作用与稻秧的品种抗性和秧龄无关。

The LD_(50) of Alternaria alternata D_(10-a_2) strain which was isolated from the corn of area of the high incidence of esophageal cancer is 71,85 g culture/kg weight of mouse. The result of UDS test of the extracts of seven strains indicated that the six extracts of them were positive.The DSI test of six extracts indicted that the five were weaker positive,but the result showed that the extracts of A.alternata could damage DNA of human cells.Resea- ching the condition of the toxin production provided...

The LD_(50) of Alternaria alternata D_(10-a_2) strain which was isolated from the corn of area of the high incidence of esophageal cancer is 71,85 g culture/kg weight of mouse. The result of UDS test of the extracts of seven strains indicated that the six extracts of them were positive.The DSI test of six extracts indicted that the five were weaker positive,but the result showed that the extracts of A.alternata could damage DNA of human cells.Resea- ching the condition of the toxin production provided that A.alternata could produce toxin was 25℃,and the suitable humidity was 33.3—50%.The results suggest that the wheat is con- taminated by A.alternata in its fruitful period when it is growing in the field or in the period of harvesting crops in which the wheat is immersed in rain water for a long time rather than in the period of its store.

本文报告了从食管癌高发区林县分离的具有强烈毒性和致突变性的链格孢(Alternariaalternata)“D_(10)-A_2”菌株粗提物半数致死量的测定,结果为71.25g 培养物/kg 体重;7个菌株粗提物的程序外 DNA 合成(UDS)试验,6个菌株粗提物的 DNA 合成抑制(DSI)试验。结果 UDS 试验6个菌株为阳性,DSI 试验5个菌株为阳性。说明互隔交链孢提取物可致人体细胞 DNA 的损伤。本文还报道了链格孢适宜的产毒条件。链格孢在一般粮食上均能生长繁殖产毒,适温为25℃,适宜的湿度根据粮食品种不同而为33—50%含水量。在北方侵染的主要粮食为小麦,当麦粒灌浆成熟期遇到较长时间的阴雨天气,或在收割脱粒时遇到连阴雨,麦粒被雨水浸泡。污染非发生于贮存期。

Soybean digest medium and brain heart infusion broth were examined for their ability to support toxin production by two strains of Clostridium difficile.The result showed that the cytotoxin titers of the two medium filtrates made no difference.So,soybean digest medium could replace brain heart infusion broth for toxin production by Clostridium difficile.

迄今尚未见用黄豆消化液培养基培养艰难梭菌及其毒素的报导。本实验结果表明,黄豆消化液培养基培养艰难梭菌毒素的效价与牛心脑浸液培养基培养的结果无显著性差异(P>0.05)。故制备艰难梭菌毒素可用黄豆消化液代替牛心脑浸液。

 
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