callose

简明释义

英[ˈkæləʊz]美[ˈkæloʊs]

adj. 有硬块的

n. 胼胝质

英英释义

单词用法

同义词

反义词

例句

1.Few pollen grains of open flower self-pollination attached and germinated in the stigma of self-incompatible individuals, and intensive callose reaction occurred on the surface of stigma.

自交亲和系萝卜单株花期、蕾期以及自交不亲和系单株蕾期授粉后花粉多数能够正常萌发并穿越柱头进入子房。

2.Few pollen grains of open flower self-pollination attached and germinated in the stigma of self-incompatible individuals, and intensive callose reaction occurred on the surface of stigma.

自交亲和系萝卜单株花期、蕾期以及自交不亲和系单株蕾期授粉后花粉多数能够正常萌发并穿越柱头进入子房。

3.Secondly, if pollen tubes entered into stigma, growth was retarded with callose plug deposition, then they stopped to grow because of inhibition.

即使父本花粉管进入母本柱头，因生长缓慢，沉积胼胝质，在花柱中受抑制而停止生长。

4.These phenomena may be related to the conveyance of implanted ions across cell wall, or be related to the accumulation of callose.

上述现象可能与注入离子的过壁运输有关，也可能与胼胝质的积累有关。

5.As development goes on, callose fluorescence disappears in the chalazal wall of diplosporous functional megaspore .

二倍体功能大孢子的合点端细胞壁内的胼胝质荧光消失。

6.The wall of the generative cell contains callose.

生殖细胞壁为胼胝质成分。

7.But the side walls usually lacked callose.

侧壁通常不具胼胝质。

8.During the wound healing process in plants, callose 胶质 is deposited to seal off damaged areas.

在植物的伤口愈合过程中，callose 胶质 被沉积以封闭受损区域。

9.Researchers found that callose 胶质 plays a crucial role in the formation of plasmodesmata.

研究人员发现，callose 胶质 在质体连接的形成中起着至关重要的作用。

10.The accumulation of callose 胶质 can indicate stress responses in plants.

在植物中，callose 胶质 的积累可以表明应激反应。

11.In some plant species, callose 胶质 is produced in response to pathogen attack.

在某些植物物种中，callose 胶质 是对病原体攻击的反应而产生的。

12.The presence of callose 胶质 in cell walls can affect the permeability of plant tissues.

细胞壁中存在的 callose 胶质 可以影响植物组织的通透性。

作文

In the realm of plant biology, understanding the various compounds that contribute to the structure and function of plant cells is crucial. One such compound that plays a significant role in plant physiology is callose, which is a polysaccharide made up of β-1,3-glucan. This substance is primarily found in the cell walls of plants and is known for its ability to respond to stress conditions. For instance, when plants are subjected to pathogen attack or mechanical injury, they often produce callose as a protective measure. This process is part of the plant's innate immune response, helping to fortify the cell wall and prevent the spread of pathogens. The synthesis of callose occurs through the action of specific enzymes called callose synthases, which are activated during stress situations. This rapid accumulation of callose can form a barrier that isolates the damaged area, thereby limiting the potential damage to surrounding tissues. As a result, callose not only serves a defensive role but also plays a part in the overall growth and development of the plant. Moreover, callose is involved in various physiological processes, including pollen development and the regulation of plasmodesmata, which are microscopic channels that facilitate communication between plant cells. The presence of callose in these structures can regulate their permeability, influencing the transport of nutrients and signaling molecules. This highlights the multifunctional nature of callose in plant biology, as it is not only a protective agent but also a key player in cellular communication. Research has shown that the levels of callose can vary significantly depending on the species of plant and the environmental conditions they face. For example, plants exposed to drought conditions may exhibit increased callose production as a means to conserve water and maintain cellular integrity. Similarly, in response to salinity stress, some plants enhance callose synthesis to mitigate the adverse effects of salt on their cellular functions. Understanding the role of callose in these contexts not only sheds light on plant resilience but also opens avenues for agricultural advancements. By manipulating the pathways that lead to callose production, scientists may develop crops that are better suited to withstand environmental stresses, thus improving food security. In conclusion, callose is a vital component of plant cell walls that plays a crucial role in plant defense mechanisms, growth, and intercellular communication. Its multifaceted functions underscore the importance of this polysaccharide in the adaptation of plants to their environments. As research continues to uncover the complexities of callose and its interactions within plant systems, we gain valuable insights that could lead to innovative strategies for enhancing plant resilience in the face of global challenges such as climate change and food scarcity.

在植物生物学领域，理解各种化合物对植物细胞的结构和功能的贡献至关重要。一个在植物生理中扮演重要角色的化合物是callose，它是一种由β-1,3-葡聚糖组成的多糖。这种物质主要存在于植物的细胞壁中，以其对压力条件的反应能力而闻名。例如，当植物遭受病原体攻击或机械损伤时，它们通常会产生callose作为保护措施。这个过程是植物固有免疫反应的一部分，有助于加固细胞壁并防止病原体的传播。 callose的合成通过特定酶的作用来进行，这些酶被称为callose合成酶，它们在压力情况下被激活。这种callose的快速积累可以形成一个屏障，隔离受损区域，从而限制对周围组织的潜在损害。因此，callose不仅具有防御作用，还在植物的整体生长和发育中发挥作用。 此外，callose还参与各种生理过程，包括花粉发育和胞间连丝的调节，胞间连丝是促进植物细胞之间通信的微小通道。callose在这些结构中的存在可以调节它们的通透性，影响营养物质和信号分子的运输。这突显了callose在植物生物学中的多功能性，因为它不仅是保护剂，还是细胞间通信的关键参与者。 研究表明，callose的水平可能因植物种类和它们面临的环境条件而显著不同。例如，暴露于干旱条件下的植物可能会表现出增加的callose生产，以节约水分并保持细胞完整性。类似地，面对盐分压力时，一些植物会增强callose的合成，以减轻盐对其细胞功能的不利影响。 理解callose在这些背景下的作用，不仅揭示了植物的韧性，还为农业进步开辟了途径。通过操控导致callose生产的途径，科学家们可能会开发出更适合承受环境压力的作物，从而改善粮食安全。 总之，callose是植物细胞壁的重要组成部分，在植物防御机制、生长和细胞间通信中发挥着至关重要的作用。其多方面的功能凸显了这种多糖在植物适应环境中的重要性。随着研究不断揭示callose及其在植物系统内相互作用的复杂性，我们获得了宝贵的见解，这可能导致创新策略，以增强植物在气候变化和粮食短缺等全球挑战面前的韧性。