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Glass atomizer

玻璃雾化器

Company: VWR
Catalog#: 552-0031
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An Assay to Study Botrytis cinerea-infected Grapevine Leaves Primed with Pseudomonas fluorescens
Author:
Date:
2016-10-05
[Abstract]  Grapevine (Vitis vinifera L.) is susceptible to an array of diseases among them the grey mold caused by the necrotrophic fungus Botrytis cinerea that decreases grape productivity and quality. To ensure a satisfactory yield and harvest quality numerous chemical fungicides are required, but they have serious drawbacks. One alternative is the use of beneficial bacteria to improve plant health. Pseudomonas fluorescens has been shown to trigger a plant-mediated resistance response in aboveground plant tissues against fungal, oomycete, bacterial, and viral pathogens. Triggered plant resistance exploits mechanisms of the plant immune system through a priming state that provides plants with enhanced capacity for rapid and strong activation of defense responses after ... [摘要]  葡萄(葡萄(Vitis vinifera)L.)易受一系列疾病的影响,其中包括由坏死性真菌葡萄孢菌引起的灰霉病,其降低葡萄生产力和质量。为了确保令人满意的产量和收获质量,需要许多化学杀真菌剂,但它们具有严重的缺点。一个替代方案是使用有益细菌来改善植物健康。已经显示荧光假单胞菌在地上植物组织中触发植物介导的对真菌,卵菌,细菌和病毒病原体的抗性反应。触发的植物抗性通过启动状态利用植物免疫系统的机制,其提供植物在病原体感染后快速和强烈地激活防御反应的增强能力,导致较低的适合度成本。有益细菌的引发应答包括防御相关基因的诱导表达,细胞壁增强和病原体感染后次生代谢产物的产生。在该方案中,我们描述了根据Verhagen评价有益细菌荧光假单胞菌PTA-CT2对葡萄植​​物的引发状态及其对灰葡萄孢的抗性水平的实验设计等。 (2011)和Gruau等人。 (2015)。

Isolation of Triterpenes from Propolis (Bee Glue)
Author:
Date:
2015-10-20
[Abstract]  Propolis (bee glue) is a natural substance produced by bees upon collection of mainly plant resins. Bees use it as antiseptic sealing agent between honeycombs and to preserve the hive from external contamination. Numerous scientific studies have been published on the biological properties of propolis including its anti-inflammatory, anti-oxidant, immunostimulant, antitumour and antimicrobial activity. Different propolis chemotypes have been characterised based on the nature of the plant-derived substances present and the geographical origin of collection. Here, we describe the isolation of nine triterpenes from a sample of propolis originating from North-Western Cameroon. All compounds were identified following analysis of their spectroscopic data and comparison with previously published ... [摘要]  蜂胶(蜂胶)是在收集主要植物树脂时由蜜产生的天然物质。 蜂用作蜂窝之间的防腐密封剂,并保护蜂巢免受外部污染。 已经发表了关于蜂胶的生物学性质的许多科学研究,包括其抗炎,抗氧化,免疫刺激,抗肿瘤和抗微生物活性。 已经基于存在的植物衍生物质的性质和收集的地理起源来表征不同的蜂胶化学型。 在这里,我们描述了从源自喀麦隆西北部的蜂胶样品中分离出九种三萜。 在分析其光谱数据并与先前发表的报告比较后鉴定所有化合物。

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