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相关概念视频

C4 Pathway and CAM01:27

C4 Pathway and CAM

38.0K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
38.0K
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

14.5K
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.
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Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

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Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
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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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Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

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Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
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相关实验视频

Updated: May 5, 2026

Detection of Histone Modifications in Plant Leaves
07:08

Detection of Histone Modifications in Plant Leaves

Published on: September 23, 2011

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在植物中,CHL1作为酸盐传感器.

Cheng-Hsun Ho1, Shan-Hua Lin, Heng-Cheng Hu

  • 1Molecular Cell Biology, Institute of Molecular Biology, Academia Sinica, and Taipei, Taiwan.

Cell
|September 22, 2009
PubMed
概括

植物通过CHL1传送器感知土壤酸盐水平,该传送器充当双亲缘离子传感器. 通过CIPK23的酸化调节了CHL1的活性.

科学领域:

  • 植物生物学 植物生物学
  • 分子植物生理学分子植物生理学
  • 交通运输 交通运输 交通运输

背景情况:

  • 离子是植物中重要的营养素和信号分子.
  • 植物对土壤营养物质变化的传感机制尚未完全理解.
  • 根据T101酸化状态,CHL1输送体表现出双亲关系特征.

研究的目的:

  • 研究酸盐载体CHL1作为植物中酸盐传感器的作用.
  • 阐明CHL1感知不同酸盐度的机制.
  • 了解CHL1酸化在初级酸盐反应中的作用.

主要方法:

  • 对吸收和感知脱的CHL1突变体的分析.
  • 对CHL1T101D和CHLT101A转基因植物的研究.
  • 在体外和体内生物化学测定.
  • 对CHL1.1上的蛋白质激酶CIPK23活性进行调查.

主要成果:

  • CHL1作为一个酸盐传感器,独立于其运输活动.
  • 化CHL1调节了低水平的初级酸盐反应,而脱化CHL1则调节了高水平的反应.
  • CIPK23在T101酸化CHL1,有助于低酸盐感应和响应维护.

更多相关视频

Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor
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Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis
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Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis

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相关实验视频

Last Updated: May 5, 2026

Detection of Histone Modifications in Plant Leaves
07:08

Detection of Histone Modifications in Plant Leaves

Published on: September 23, 2011

26.9K
Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor
08:21

Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor

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Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis
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Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis

Published on: June 4, 2021

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结论:

  • 在更高的植物中,CHL1作为双亲关系离子传感器.
  • 一个酸化开关机制使CHL1能够感知广泛的土壤酸盐度.
  • CHL1集成了植物中的营养感应和信号通路.