查询词典 pathogenicity

The results showed that among the 3 NO donors,only GSNO had significant effects on the percentage of sporulated oocysts,theinhibiting rate of purified sporulated oocysts was 93% to 97%,and reached 100% onthe oocysts in the faces of chicken with E.tenella infection.GSNO also significantlydecreased virulence of E.tenella oocysts;and the oocysts treated by 2～8 mmol/LGSNO almost lost their pathogenicity to chickens.

试验结果表明，在以上3种NO供体中，只有GSNO对卵囊的孢子化率有明显的抑制作用，其对纯化卵囊的抑制率为93％～97％，对粪便中卵囊的抑制率可达100％；GSNO还能明显抑制E.tenella卵囊的毒力，经2～8mmol/L浓度GSNO处理的卵囊几乎丧失了对雏鸡的致病力。

This study will help us to identify the role of vhh/tlh haemolysin gene in the pathogenicity of vibrios.

对vhh/tlh溶血素基因在弧菌中的分布研究，将有助于进一步确定这类溶血素基因在病原弧菌致病性中的作用。

The pathogenicity of pathogen was enhanced by washing leaf surface with acetone and 700% alcohol and by exposing the seedlings out of green-house.

在侵染试验中，用丙酮和70％酒精清洗的幼苗叶片发病加重；露天放置的烟苗较生长在温室内的烟苗发病重。

Some differences of pathogenicity of different cotton isolotes were observed on cotton seedlings, but not on cotton bolls.

来自棉花上的不同苎麻疫霉菌株对棉苗的致病力存在一定的差异，但对棉铃的致病力差异不明显。

Pestis pathogenicity. Methods: We utilized "whole genome shotgun" approach to get the genome sequence of 91001. Based on the finished and annotated genome sequence of 91001, as well as previously published genome sequence of C092 and KIM, we performed detailed comparative genomics analysis on their chromosome and plasmids. For the important phenotypes - nitrate reduction and glycerol fermentation, we carried out large scale screening among 257 strains isolated in China to clarify the genetic mechanism of these two phenotypes.

采用全基因组鸟枪法测定91001菌株的全基因组序列，利用比较基因组方法对91001与另两株鼠疫耶尔森氏菌(CO92和KIM)的全基因组进行比较研究；同时针对一些有意义的基因在多株鼠疫耶尔森氏菌的中国分离株中进行了验证；并在基因组研究的基础上开展了初步的蛋白质学研究。

Was isolated from the diseased leaf of Cynodon hybrid in Red Lotus Lake golf courses in E-zhou. Pathogenicity was tested by inoculating the leaf with mycelium plug of Curvularia sp., the result indicated that Curvularia sp. isolate was the pathogen.

研究结果如下：从鄂州红莲湖高尔夫球场的狗牙根发病植株叶片上分离菌株Curvularia sp。，用菌丝块接种狗牙根叶片进行致病性测定，证实Curvularia sp。

The progress levels of symptoms after pathogen infection showed that interaction of gray leaf spot pathogen and host has differentiation or polymorphism. The progress levels of symptoms is different.The aggressively has polymorphism. The pathogenicity of different isolates in same cultivar has polymorphism, or the host reaction type of same isolate in different cultivars has polymorphism.The host reaction type has differentiation. There are seven types of host reaction in cultivar and inbred after infected by GLS pathogen:Rectangular lesion without chlorotic halo, Rectangular lesion with chlorotic halo,Irregular lesion without chlorotic halo,Irregular lesion with chlorotic halo, Spot lesion with chlorotic halo,Rectangular and irregular lesionand Rectangular and spot lesion. The host reaction type is coalesced lesion when disease severely. Frequency of each reaction types is different.

通过对玉米灰斑病菌侵染后的显症过程的系统观察，可在组织水平上说明该病菌与寄主互作反应存在分化或多样性：玉米灰斑病菌不同菌株侵染后显症过程表现出明显的差异；玉米灰斑病菌在侵袭力上存在多样性，菌株间对同一种品种的致病性表现多样化，或者同一菌株对不同品种侵染引起的寄主反应表现为多样性；病斑反应型的分化，玉米灰斑病菌侵染玉米品种或自交系后，主要有7种病斑反应类型，即RH型、RN型、IRH型(不规则形具褪绿晕圈病斑)、IRN型(不规则形无褪绿晕圈病斑)、SH型、RI型(长矩形与不规则形混合病斑)和RS型(长矩形与斑点形混合病斑)，若发病严重，病斑连成片，而且这些反应类型出现的频率也不同。

Objective To study the change of levels of plasma heat stress protein 70 (HSP70) and cytokine and their interrelationship in pathogenicity of heat apoplexy.

目的 探讨热应激蛋白70(HSP70)水平与细胞因子在高温中暑发生的病理过程中的水平变化和相互关系。

To obligatory pathogens like Pseudoperonospron cubensis, it could not only hold back the infection of hypha,but also heal the spot where infected by hypha.(8)The study on mechanism of action showed that the crude extract of S-5210 had a strong inhibition of the mycelia growth and spore germination which led to some abnormal growth such as the twisted and inflated mycelia, the abnormal increased branching, the broken mycelia wall and leakage of cytoplasm from hyphal tips.Alao the spores and the rate of germination were decreased, the germ tube was malformed in shape et al.The pathogenicity of hypha and spore was weakened.

8S-5210 活性产物的拮抗机理初步研究表明：S-5210 粗提物能强烈抑制病原菌菌丝的生长和孢子的萌发，引起病原菌菌丝扭曲或膨大、分枝增多、分枝顶端细胞壁破裂、原生质外溢；分生孢子数减少，孢子萌发率降低，芽管畸形等异常现象；菌丝和分生孢子致病性减弱。

CG strains were isolated from the mango fruits with anthracnose symptoms in different locations on Guangdong and Hainan Province, China. The pathogenicity and sporulation capability of these isolates were compared, and the isolate LCG5 from CATAS, Danzhou City, Hainan Province, China were Chosen for further use in this study for its high virulence on mango fruits and also good sporulation capability.

分别从海口、湛江、两院三地采集到CG菌株进行纯化培养，通过芒果接种实验，对发病率、发病指数及菌株的产孢能力三项测试，最终确定选用接种发病率为100％，病情指数为71.1，菌株产孢能力达1.2×10~6个／ml的两院第5号菌株(缩写为LCG5)，其致病力比较强，产孢能力可以保证了转化体系的成功建立，方便对突变体库的致病和产孢相关突变体的筛选。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。