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相关概念视频

Water and Mineral Acquisition02:34

Water and Mineral Acquisition

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Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
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Cell Signaling in Plants01:25

Cell Signaling in Plants

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Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
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Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

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Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Regulation of Transpiration by Stomata02:04

Regulation of Transpiration by Stomata

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During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
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Protein Modifications in the RER01:26

Protein Modifications in the RER

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Modification of secretory and transmembrane proteins entering the rough ER begins in the ER lumen. These modifications aid in protein folding and stabilize the acquired tertiary structure. Protein modifications in the rough ER co-occur at different stages of protein folding.
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Receptor-mediated Endocytosis01:20

Receptor-mediated Endocytosis

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Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
Clathrin-Mediated Endocytosis of LDL
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相关实验视频

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Author Spotlight: Image-Based Methods to Study Membrane Trafficking Events in Stomatal Lineage Cells
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克拉特林介导的内细胞酶通过ROS调节根内皮的亚基化.

Javier Martinez Pacheco1, Wolfgang Busch1

  • 1Plant Molecular and Cellular Biology Laboratory, Salk Institute for Biological Studies, La Jolla, San Diego, CA, 92037, USA.

The New phytologist
|October 2, 2025
PubMed
概括

内膜贩运调节了阿拉比多普西斯的根子化. 扰乱克拉特林介导的内细胞生殖或外细胞生殖会导致异位子内苏贝林沉积,由活性氧物种介导.

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:

  • 内膜贩运 (ET) 对植物应激适应至关重要.
  • 它在内皮根子化中的作用在很大程度上是未知的.
  • 根子化形成了一个关键的细胞增生障碍.

研究的目的:

  • 为了调查内膜贩运在阿拉比多普西斯根内皮亚体化中的作用.
  • 为了阐明参与调节苏贝林沉积的特定途径.
  • 了解将膜贩运与屏障形成联系起来的分子机制.

主要方法:

  • 细胞内核和细胞外核路径的遗传破坏.
  • 药理上抑制了克拉特林介导的内细胞分裂 (CME).
  • 对苏贝林沉积,信号通路 (CIFs-SGN3-SGN1-RBOHF/D) 和反应性氧物种 (ROS) 生产的分析.

主要成果:

  • 干扰CME或表细胞突变诱导了在根内皮层中的异卵性苏贝林沉积.
  • 通过CIFs-SGN3-SGN1-RBOHF/D轴和ROS的CME抑制引发了子化.
  • 在血中的RBOHF积累导致H2O2的产生,驱动子化.
关键词:
阿拉比多普西斯 (Arabidopsis) 是一种植物.这就是ROSOS ROS.细胞内的形成 细胞内的形成它们的内皮质 (endodermis) 是:苏贝林就是这样的.

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Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana

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结论:

  • 内膜贩运关键地控制了Arabidopsis.的内皮根子化.
  • 独特的ET途径调节了亚分化,CME通过ROS作用.
  • 这通过ROS信号传递将膜贩运与阿波塑性屏障形成联系起来.