phytoalexins

简明释义

英[faɪtəʊəˈlɛksɪnz]美[faɪtoʊəˈlɛksɪnz]

n. 植物抗毒素（phytoalexin 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Plant oligosaccharides extracted from wheat cell wall was used to treat the suspension -cultured cells and calli of the crop, and subsequently phytoalexins were isolated from the treated materials.

采用从小麦细胞壁提取的低聚糖处理小麦的悬浮培养细胞和愈伤组织，并从这两种处理材料中都分离出抗毒素。

2.Plant oligosaccharides extracted from wheat cell wall was used to treat the suspension -cultured cells and calli of the crop, and subsequently phytoalexins were isolated from the treated materials.

采用从小麦细胞壁提取的低聚糖处理小麦的悬浮培养细胞和愈伤组织，并从这两种处理材料中都分离出抗毒素。

3.Finally, a new methodology, based on Mn (III) promoted carbon radical reactions, was developed to provide intermediates that should be useful in the synthesis of pterocarpan phytoalexins.

第三部分介绍了醋酸锰引发的碳自由基与杂芳烃的选择性反应，并将该方法成功地应用到天然产物紫檀素关键中间体的合成中。

4.Abstract: Phytoalexins are antimicrobial compounds of low molecular weight that are synthesized and accumulated in plants after exposure to microorganisms.

摘要：植物抗毒素是植物受到外界刺激或感染病菌后合成并积累的具有抗逆活性的小分子化合物。

5.Induced HSP enhances biosynthesis of lignins and phytoalexins in roots, thus increasing diseases resistance and storage tolerance in heat-shocked roots.

这些HSP加速了木质素的合成，并诱导植物抗毒素等产生，从而提高薯根的抗病性，保持耐贮不腐烂。

6.Thus phytoalexins as a crucial secondary metabolite, have a great potential to be applied in the fields of functional food and dietary supplement.

由此，植物抗毒素作为植物次生代谢产物的重要组成部分，在功能食品和膳食补充剂领域有着广阔的应用前景。

7.Therefore, infected by pathogen directly and treated with biotic elicitors both can induce the phytoalexins effectively.

因此，不论用病原菌直接侵染还是用生物诱导子外源处理植物生体，都能有效诱导植保素的生成。

8.Rice (Oryza sativa) produces momilactone diterpenoids as both phytoalexins and allelochemicals.

水稻产生稻壳酮二萜类化合物作为抗毒素和化感素。

9.Plants produce phytoalexins to defend themselves against pathogens.

植物产生植物抗生素来抵御病原体。

10.The study focused on how phytoalexins enhance plant immunity.

这项研究集中于植物抗生素如何增强植物免疫力。

11.Certain fungi trigger the production of phytoalexins in crops.

某些真菌会刺激作物产生植物抗生素。

12.Research indicates that phytoalexins can inhibit the growth of bacteria.

研究表明，植物抗生素可以抑制细菌生长。

13.The role of phytoalexins in plant defense mechanisms is crucial.

植物抗生素在植物防御机制中的作用至关重要。

作文

In the world of plant biology, the term phytoalexins refers to a group of antimicrobial and anti-fungal substances that are produced by plants in response to stress or pathogen attack. These compounds play a crucial role in the plant's defense mechanism, allowing it to protect itself from various threats such as bacteria, fungi, and even herbivores. Understanding phytoalexins is essential for both researchers and agriculturalists, as they provide insights into how plants interact with their environment and how we can enhance crop resilience against diseases. The production of phytoalexins is a complex biochemical process that occurs when a plant senses an external threat. For instance, when a pathogen infects a plant, the plant cells recognize the invader and trigger a signaling cascade that leads to the synthesis of these protective compounds. Different plants produce different types of phytoalexins, which can vary widely in their chemical structure and function. For example, the well-studied compound resveratrol, found in grapes, is a type of phytoalexin known for its antioxidant properties and potential health benefits for humans. Moreover, the presence of phytoalexins can influence the overall health of a plant and its ability to thrive in a competitive ecosystem. Plants that effectively produce these compounds are often more resilient to diseases, which can lead to higher yields in agricultural settings. This is particularly important in the face of climate change and the increasing prevalence of plant diseases that threaten food security worldwide. Research into phytoalexins has also opened up new avenues for developing disease-resistant crop varieties. By understanding the genetic and biochemical pathways involved in the production of these compounds, scientists can potentially breed or engineer plants that are better equipped to fend off pathogens. This biotechnological approach not only holds promise for improving crop health but also for reducing the reliance on chemical pesticides, which can have detrimental effects on the environment and human health. In addition to their role in plant defense, phytoalexins have garnered interest for their potential health benefits in humans. Many of these compounds exhibit antioxidant, anti-inflammatory, and even anticancer properties. As a result, there is a growing body of research exploring the dietary benefits of consuming plants rich in phytoalexins. For instance, foods like berries, grapes, and certain herbs are not only delicious but also packed with these beneficial compounds, which may contribute to overall health and wellness. In conclusion, phytoalexins are vital components of plant defense mechanisms, playing a significant role in how plants respond to stress and pathogens. Their importance extends beyond the realm of botany, impacting agriculture and human health. As we continue to explore the complexities of these fascinating compounds, we move closer to harnessing their potential to improve crop resilience and promote health in our diets. The study of phytoalexins exemplifies the intricate connections between plants, their environments, and our own well-being, highlighting the need for ongoing research in this field.

在植物生物学的世界中，术语phytoalexins指的是一类由植物在应对压力或病原体攻击时产生的抗微生物和抗真菌物质。这些化合物在植物的防御机制中发挥着至关重要的作用，使其能够保护自己免受细菌、真菌甚至草食动物等各种威胁。理解phytoalexins对于研究人员和农业工作者来说都很重要，因为它们提供了植物如何与环境互动以及我们如何增强作物抵御疾病能力的见解。 phytoalexins的产生是一个复杂的生化过程，当植物感知到外部威胁时就会发生。例如，当病原体感染植物时，植物细胞会识别入侵者并触发信号级联反应，从而导致这些保护性化合物的合成。不同的植物产生不同类型的phytoalexins，这些化合物的化学结构和功能可能差异很大。例如，葡萄中发现的著名化合物白藜芦醇是一种被广泛研究的phytoalexins，以其抗氧化特性和对人类潜在健康益处而闻名。 此外，phytoalexins的存在可以影响植物的整体健康及其在竞争生态系统中的生存能力。有效产生这些化合物的植物通常对疾病更具韧性，这可能导致农业环境中的更高产量。这在气候变化和日益严重的植物疾病威胁全球粮食安全的背景下尤为重要。 对phytoalexins的研究还开辟了开发抗病作物品种的新途径。通过理解这些化合物产生的遗传和生化途径，科学家们可以潜在地培育或工程化更能抵御病原体的植物。这种生物技术方法不仅有望改善作物健康，还有助于减少对化学农药的依赖，而后者可能对环境和人类健康产生不利影响。 除了在植物防御中的作用外，phytoalexins因其在人体潜在健康益处而引起了越来越多的关注。这些化合物中的许多表现出抗氧化、抗炎甚至抗癌的特性。因此，关于食用富含phytoalexins的植物的饮食益处的研究不断增加。例如，浆果、葡萄和某些草药等食品不仅美味，而且富含这些有益的化合物，可能有助于整体健康和福祉。 总之，phytoalexins是植物防御机制的重要组成部分，在植物如何应对压力和病原体方面发挥着重要作用。它们的重要性超越了植物学领域，影响着农业和人类健康。随着我们继续探索这些迷人化合物的复杂性，我们将更接近于利用它们的潜力来改善作物韧性并促进我们饮食中的健康。对phytoalexins的研究体现了植物、环境和我们自身健康之间错综复杂的联系，突显了这一领域持续研究的必要性。