explants

简明释义

英[ɪkˈsplænts]美[ɪkˈsplænts]

n. 移植组织，[生物]外植体（explant 的复数形式）

v. 移植培养（explant 的三单形式）

英英释义

单词用法

同义词

反义词

例句

1.The transformation frequency from leaf explants was higher than that from stem explants.

且叶切片外植体的转化频率高于茎段外植体。

2.Fibroblasts were grown from corneal stroma explants.

用植块法培养角膜基质成纤维细胞。

3.Epicotyl segments were the optimal explants for adventitious buds regeneration.

上胚轴是再生不定芽的最佳外植体类型。

4.The results indicated that young stem segments were the best explants in the callus induction.

结果表明：幼龄的茎段是诱导愈伤组织的最佳材料。

5.The thin-skin muskmelon inbred lines were used to study the effects of explants, seedling age, and hormones on plant in vitro regeneration.

以甜瓜薄皮自交系为材料，研究了外植体、苗龄、激素等因素对甜瓜离体再生的影响。

6.The callia from different explants were differential in differentiation.

不同外植体的愈伤组织分化程度不同。

7.The leaves were optimal explants for callus induction.

叶和茎均是诱导愈伤组织的较佳外植体。

8.The effect of DON toxin on cultured wheat cells was related to the toxin concentration, explants and subculture duration.

DON毒素对小麦细胞培养物的影响与毒素浓度、外植体来源和继代培养时间等因素有关；

9.In tissue engineering, scientists often use explants to grow new cells in the laboratory.

在组织工程中，科学家们常常使用外植体在实验室中培养新细胞。

10.After several weeks, the explants began to show signs of new tissue formation.

几周后，外植体开始显示出新组织形成的迹象。

11.The researchers collected explants from various plant species to study their regenerative capabilities.

研究人员从各种植物物种中收集了外植体以研究它们的再生能力。

12.During the experiment, the explants were placed in a nutrient-rich medium to promote growth.

在实验过程中，外植体被放置在富含养分的培养基中以促进生长。

13.The success of the grafting procedure depends largely on the health of the explants used.

移植手术的成功在很大程度上取决于所用的外植体的健康状况。

作文

In the field of plant biology and tissue culture, the term explants refers to small pieces of plant tissue that are taken from a donor plant for the purpose of propagation or research. The process of using explants is a crucial method in plant biotechnology as it allows scientists and horticulturists to grow new plants from these small samples. This technique has revolutionized the way we propagate plants, offering a way to produce disease-free and genetically identical offspring. The selection of appropriate explants is vital for successful tissue culture. Typically, the best sources for explants include young shoots, leaves, or even roots, depending on the species and the desired outcome. For example, when working with orchids, meristematic tissue from the growing tips can be an excellent choice for explants, as it contains actively dividing cells that can lead to the formation of new plantlets.Once the explants are harvested, they must be carefully sterilized to eliminate any potential contaminants such as bacteria or fungi. This step is critical because the sterile environment is necessary for the explants to thrive in vitro. After sterilization, the explants are placed on a nutrient-rich medium that provides all the essential hormones and nutrients needed for growth. The composition of this medium can vary significantly depending on the type of plant and the specific goals of the tissue culture.As the explants grow, they can be manipulated to form callus tissue, which is an undifferentiated mass of cells. This callus can then be induced to differentiate into various plant organs such as roots, shoots, or even flowers. This ability to control the development of explants is one of the reasons why tissue culture is such a powerful tool in modern agriculture and conservation efforts.Furthermore, the use of explants extends beyond just propagation. Researchers also utilize this technique to study plant physiology, genetics, and responses to environmental stresses. For instance, by analyzing how different explants respond to various hormone treatments, scientists can gain insights into the mechanisms of plant growth and development. This research can lead to innovations in crop improvement, pest resistance, and sustainable agricultural practices.In conclusion, explants play a fundamental role in plant tissue culture and biotechnology. Their ability to generate new plants and facilitate research makes them invaluable in both commercial horticulture and scientific studies. As we continue to explore the potential of explants, we unlock new possibilities for enhancing food security, conserving endangered plant species, and understanding the complexities of plant biology. The future of agriculture may very well depend on our ability to effectively utilize explants and the techniques developed around them.

在植物生物学和组织培养领域，术语explants指的是从供体植物中取出的植物组织小块，用于繁殖或研究。使用explants的过程是植物生物技术中的关键方法，因为它允许科学家和园艺师从这些小样本中生长出新植物。这项技术彻底改变了我们繁殖植物的方式，提供了一种生产无病和基因相同后代的方法。选择适当的explants对于成功的组织培养至关重要。通常，最佳的explants来源包括幼芽、叶子或甚至根，这取决于物种和期望的结果。例如，在处理兰花时，从生长顶端提取的分生组织可以是一个优秀的explants选择，因为它含有活跃分裂的细胞，可以导致新植株的形成。一旦收获了explants，必须仔细进行消毒，以消除任何潜在的污染物，如细菌或真菌。这一步骤至关重要，因为无菌环境对于explants在体外生长是必要的。在消毒后，explants被放置在富含营养的培养基上，该培养基提供了所有必需的激素和营养物质以支持生长。该培养基的成分可能因植物类型和组织培养的具体目标而显著不同。随着explants的生长，可以对其进行操作以形成愈伤组织，这是一种未分化的细胞团。这种愈伤组织随后可以诱导分化成各种植物器官，如根、芽或甚至花。这种控制explants发育的能力是现代农业和保护工作中组织培养如此强大工具的原因之一。此外，explants的使用不仅限于繁殖。研究人员还利用这项技术研究植物生理学、遗传学和对环境压力的反应。例如，通过分析不同explants对各种激素处理的反应，科学家可以深入了解植物生长和发育的机制。这项研究可以推动作物改良、抗虫性和可持续农业实践的创新。总之，explants在植物组织培养和生物技术中发挥着基础性作用。它们产生新植物和促进研究的能力使其在商业园艺和科学研究中不可或缺。随着我们继续探索explants的潜力，我们为增强粮食安全、保护濒危植物物种和理解植物生物学的复杂性解锁了新的可能性。农业的未来很可能依赖于我们有效利用explants及其相关技术的能力。