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相关概念视频

Plasmodesmata02:32

Plasmodesmata

32.6K
The organs in a multicellular organism’s body are made up of tissues formed by cells. To work together cohesively, cells must communicate. One way that cells communicate is through direct contact with other cells. The points of contact that connect adjacent cells are called intercellular junctions.
32.6K
Contact-dependent Signaling01:19

Contact-dependent Signaling

44.6K
Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...
44.6K
The Apoplast and Symplast01:46

The Apoplast and Symplast

50.4K
Plant growth depends on its ability to take up water and dissolved minerals from the soil. The root system of every plant is equipped with the necessary tissues to facilitate the entry of water and solutes. The plant tissues involved in the transport of water and minerals have two major compartments - the apoplast and the symplast. The apoplast includes everything outside the plasma membrane of living cells and consists of cell walls, extracellular spaces, xylem, phloem, and tracheids. The...
50.4K
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

16.0K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.0K
Cell Adhesion in Plants01:14

Cell Adhesion in Plants

2.7K
Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
2.7K
The Phragmoplast01:59

The Phragmoplast

5.1K
Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
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相关实验视频

Updated: Jun 30, 2025

Identification of Plasmodesmal Localization Sequences in Proteins In Planta
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Identification of Plasmodesmal Localization Sequences in Proteins In Planta

Published on: August 15, 2017

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质体和细胞间分子流量控制.

Estee E Tee1, Christine Faulkner1

  • 1Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.

The New phytologist
|March 17, 2024
PubMed
概括
此摘要是机器生成的。

质体形成植物细胞之间的连接,调节分子流通. 它们的结构,组成和光圈控制什么移动,影响植物生理学.

关键词:
细胞与细胞之间的通信.分子走私分子贩运多细胞性多细胞性非细胞的自主信号塑体可能会发生变化.信号信号是指一个信号.

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Author Spotlight: Microscopic Analysis of Protein Localization at Plasmodesmata in Plants
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Author Spotlight: Microscopic Analysis of Protein Localization at Plasmodesmata in Plants

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A Cell-to-cell Macromolecular Transport Assay in Planta Utilizing Biolistic Bombardment
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相关实验视频

Last Updated: Jun 30, 2025

Identification of Plasmodesmal Localization Sequences in Proteins In Planta
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Identification of Plasmodesmal Localization Sequences in Proteins In Planta

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Author Spotlight: Microscopic Analysis of Protein Localization at Plasmodesmata in Plants
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A Cell-to-cell Macromolecular Transport Assay in Planta Utilizing Biolistic Bombardment
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科学领域:

  • 植物生物学 植物生物学
  • 细胞生物学 细胞生物学
  • 分子生物学分子生物学

背景情况:

  • 等离子体是连接相邻植物细胞的关键等离子体膜线通道.
  • 这些通道建立了细胞质连续体,促进了分子在各种尺度上的细胞间运输.
  • 等离子体孔的动态调节会影响分子交换的范围.

研究的目的:

  • 探索通过等离子体的分子流量管理的调节机制.
  • 了解等离子体的组成,结构和孔径是如何控制细胞间传输的.
  • 研究各种分子的通道,从小代谢物到更大的RNA.

主要方法:

  • 分析不同类型细胞中的等离子体结构,组成和密度.
  • 研究控制等离子体微孔径的信号级联.
  • 检查分子贩运机制,包括被动和潜在的活跃运输.

主要成果:

  • 等离子体的组成,形状和密度是贩运能力的关键决定因素.
  • 专门的信号通路调节了等离子体小孔.
  • 虽然小分子的运输是被动的,但更大的分子运输机制仍然是研究的活跃领域.

结论:

  • 等离子体的形成,结构,组成和分子含量是植物细胞间运输的关键调节者.
  • 了解这些因素对于理解广泛的植物生理过程至关重要.
  • 需要进一步的研究来阐明大分子通过等离子体贩运的机制.