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関連する概念動画

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.
14.5K
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

17.9K
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...
17.9K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

22.5K
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.
22.5K
Cell Signaling in Plants01:25

Cell Signaling in Plants

4.5K
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...
4.5K
Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

928
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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関連する実験動画

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

CHL1は植物における窒素センサーとして機能します.

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
まとめ

植物はCHL1トランスポーターを使用して土壌の窒素濃度を感知し,それは二重親和イオンセンサーとして機能します. CIPK23によるリン酸化はCHL1を調節する.

科学分野:

  • 植物生物学 植物生物学
  • 分子植物生理学 植物生理学
  • 交通機関 交通機関 交通機関

背景:

  • イオンは重要な栄養素であり,植物のシグナル伝達分子である.
  • 植物が土壌の栄養分の変化を感知するメカニズムは完全に理解されていません.
  • CHL1トランスポーターは,T101のリン酸化状態に基づいた二重親和特性を示しています.

研究 の 目的:

  • 植物における窒素センサーとしての窒素輸送物質CHL1の役割を調査する.
  • CHL1が異なる窒素濃度を感知するメカニズムを解明する.
  • 主要な窒素反応におけるCHL1リン酸化の機能を理解する.

主な方法:

  • CHL1変異体の吸収と感知が分離された分析.
  • CHL1T101DとCHLT101Aのトランスジェニック植物の研究.
  • インビトロおよびインビボ生化学測定法.
  • CHL1.1におけるタンパク質キナーゼCIPK23の活性に関する調査.

主要な成果:

  • CHL1は,輸送活動とは関係なく,窒素センサーとして機能します.
  • リン酸化CHL1は低レベルのプライマリナイトレート反応を媒介し,脱リン酸化CHL1は高レベルの反応を媒介する.

さらに関連する動画

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

Published on: August 15, 2017

14.6K
Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis
06:50

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

Published on: June 4, 2021

4.3K

関連する実験動画

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

Published on: August 15, 2017

14.6K
Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis
06:50

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

Published on: June 4, 2021

4.3K
  • CIPK23はT101でCHL1をリン酸化し,低ナイトレットの感知と応答維持に寄与する.

    • 結論:

    • CHL1は,高級植物における二重親和イオンセンサとして機能する.
    • リン酸化スイッチメカニズムにより,CHL1は多種多様な土壌の窒素濃度を感知できます.
    • CHL1は,植物の栄養素感知およびシグナル伝達経路を統合しています.