致病性

In order to evaluate resistance risk of Phytophthora parasitica var. nicotianae to metalaxyl, the metalaxyl-sensitive strain 240 and metalaxyl-resistant strain191 were studied. The results showed that the mutation rate of metalaxyl-sensitive strain 240 was 7.0×10–5 on CA medium with metalaxyl concentration of 10μg/mL.

为了评估烟草黑胫病菌对甲霜灵的抗药性风险，以对甲霜灵敏感和高抗的烟草黑胫病菌240和191为出发菌株，进行了抗性突变频率测定、抗性诱变、抗性水平测定、遗传稳定性、生长速率、致病性测定和适合度等研究。

Ten years wide investigation and research on the characteristics and pathogenicity of cryphonectria parasitica showed that, Cryphonectria parasitica existed widely in the distributing areas of Castanea mollissima, and that it belonged to weak parasite, only lived on the weak and dying branchs, sprouts, and soon. Cryphonectria parasitica was not main and direct death cause of Castanea mollissima, and the dead parts had no great influence on the growth of whole tree.

经过10余年对栗疫病发生特点和致病性的大量调查研究，结果表明栗疫菌在板栗分布区普遍存在，是弱寄生菌，在本地只寄生那些生长十分衰弱，即将死亡的板栗树干、苗木等，但栗疫菌的寄生不是这些部位死亡的主要和直接原因，而且它所寄生的部位局部死亡后对整株栗树的影响不大，因此，栗疫病在一般倩况下并非毁灭性病害。

The co-infection of both viruses is quite interesting in many, many aspects. It's a much more pathopoiesis process than mono-infection.

两种病毒混合感染在许多方面都是很有意思的，这种感染要比单一感染更有致病性。

Fig. 27. HPAI - Congestion and petechiae in the skin on the hocks and shanks

图-27。高致病性禽流感-腿部皮肤可见充血和淤斑

Here we describe a gene in the plant pathogen Streptomyces turgidiscabies that encodes a NOS homologue, and we reveal its role in nitrating a dipeptide phytotoxin required for plant pathogenicity.

作者描述了植物致病菌Streptomyces turgidiscabies中一种编码NOS同源物的基因并揭示了其在植物致病性中所需的对植物毒素二肽的硝化作用。

Complementation assays in planta showed that either the deletion in the lipoprotein domain or in the transmembrane domain did not restore HR induction in tobacco and pathogenicity in rice to the hrcJ mutant.

功能互补结果显示，缺失脂蛋白结构域和跨膜结构域的hrcJ基因均不能恢复hrcJ突变体在烟草上的HR激发能力和在水稻上的致病性。

Through a relaxed selection of 10 passages, the precocious line showed genetically stable in its prepatent time, OPG, and as well as its pathogenicity.

对选育的早熟系进行放松选择传代10次，其潜隐期、OPG、致病性均保持了早熟系的特征。

the low procreant routeway infection is one important reason to abortion in prevalence.through enhance pertinence treatment to microbe which can cause disease,it might reduce the quotiety of abortion in prevalence.

孕期下生殖道感染是引起孕妇早产的一个重要原因，加强对其中一些高致病性微生物针对性的治疗，可能对减少早产的发生起到重要作用。

M. penetrans can stimulate the production of NO and inhibit mouse macrophages prolification, thus it may be an important etiological factor.

穿透支原体的脂质相关膜蛋白能诱导巨噬细胞产生一氧化氮，且能抑制巨噬细胞的增殖，因而可能与其致病性相关。

Objective To investigate the potential pathogenicity of Mycoplasma penetrans (M. penetrans), and to study nitric oxide production and cell prolification in lipid-associated membrane proteins-stimulated mouse macrophages.

目的 检测穿透支原体脂质相关膜蛋白能否诱导小鼠巨噬细胞产生一氧化氮及其对细胞增殖的影响，以了解穿透支原体潜在的致病性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。