查询词典 pathogen

Objective To isolate and identify pathogen of Cistanche deserticola stem rot , study its biological characteristics, and select the effective fungicides against the pathogenic bacteria.

目的分离和鉴定肉苁蓉茎腐病病原菌，研究其生物学特性，并室内筛选对该病原菌有效的杀菌剂。

Objective To isolate and identify pathogen of Cistanche deserticola stem rot, study its bio logical characteristics, and select the effective fungicides against the pathogenic bacteria.

目的 分离和鉴定肉苁蓉茎腐病病原菌，研究其生物学特性，并室内筛选对该病原菌有效的杀菌剂。

De Bary is a worldwide plant pathogen causing destructive Sclerotinia stem rot disease in many oil crops, vegetables, etc.

de Bary是世界粮油作物、蔬菜等农作物生产上的分布最广、为害最严重的病害之一。

Since there is no any record on Arabidopsis Sclerotinia stem rot, we first identified the pathogen and then studied the molecular mechanism of Arabidopsis- Sclerotinia interaction.

Northern blot分析表明：PDF1.2在接种12h后开始表达，在之后的4个时间段其表达量逐步增强；而PR1在整个过程中表达量变化不大。

The fungal pathogen infected stems and leaves of the host plants and caused stem rot and leaf spots, resulting in earlier defoliation and plant wilting or even death.

在田间，病原菌侵染植株的茎和叶片，引起当年移植苗发生茎腐、落叶、植株枯萎和死亡。

The biological characteristics of the pathogen of the tomato stem rot was studied. The results showed that the mycelia could grow better on PDA, PSA, 2%water agar, Richard,tomato juice,oatmeal and tomato oatmeal culture media, but worse on the 2%water agar culture medium. The temperature for mycelial growth ranged from 2 ℃ to 32 ℃, and 20 ℃ was the optimum. The mycelia could grow from pH3 to pH10, but pH5-7 was better.

对番茄茎基腐病病原菌生物学特性研究结果表明：病菌菌丝在供试PDA、PSA、2%水琼脂、Richard、番茄煎汁、燕麦片和番茄燕麦等7种培养基中均能良好生长，而在2%水琼脂培养基上生长较为缓慢；菌丝在2~32 ℃范围内均能生长，最适20 ℃，致死温度为50 ℃，10 min；菌丝生长的pH范围为3~10，最适为5~7；光照对菌丝生长影响较小。

The results showed that pathogen conidia germination germ tube after the invasion from pore to complete the required invasive 12h ~ 48h, the 10d show symptoms around, 16d browser ripe conidia; host bacteria cause symptoms of infection, the mycelium from the Under surface of leaf across the mesophyll cells, in thin-walled small positive inter-leaf assembly, and finally the formation of conidia, and conidia generated subepidermal parenchyma cells in between, a certain randomness.

结果表明：病菌分生孢子萌发后产生芽管从气孔侵入，完成侵入需要12h～48h，大约到10d显示症状，16d分生孢子器成熟；病菌侵染寄主引起症状后，菌丝多从叶背面跨过叶肉细胞，在叶正面薄壁细间集结，最后形成分生孢子器，分生孢子器产生于表皮下薄壁细胞之间，具有一定随机性。

Similar requirements of a plant symbiont and a mammalian pathogen for prolonged intracellular survival.

延长细胞内生存的植物共生体和哺乳动物病原体的相似要求〉《科学》287 (2000)：

Through investigation and study of the leaf blight disease of Lycium in 5 different areas in Mongolia, the pathogen was identified in-house as Alternaria tenuis Nees, biological characteristics of the pathogens, the bioassay of toxins from A. tenuis Nees, the pathogenic mechanism of toxin and the toxicity determination of the fungicide were studied.

通过对内蒙古5个不同地区枸杞叶枯病的调查研究，确定其致病菌为细链格孢菌，并对该菌的生物学特性、病原菌毒素活性检测、毒素的致病机理及几种药剂的室内毒力进行了研究。

The observation and comparison on morphology of the powdery mildew being collected on tree of heaven from Gansu, Beijing and Chengdu have been made. The result showed that the pathogen on leafs collected from three locations mentioned above was identified as Phyllactinia ailanthi.

对采自甘肃、北京和成都的臭椿白粉病标样进行了病原菌形态观察比较，结果显示，三个地区采集的标样为同一病原，均为子囊菌亚门、球针壳属真菌―臭椿球针壳。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。