Related Experiment Video
Updated: Jul 15, 2026
11:33
Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer
Published on: October 14, 2022
K+ channel activity in plants: genes, regulations and functions
Anne Lebaudy1, Anne-Aliénor Véry, Hervé Sentenac
1Biochimie et Physiologie Moléculaire des Plantes, UMR 5004, CNRS/INRA/Monptellier SupAgro/UM2, 1 Place Viala, 34060 Montpellier Cedex 1, France. lebaudy@supagro.inra.fr
FEBS Letters
|April 10, 2007
Summary
Plant growth relies on potassium (K(+)) transport. This study details K(+)-selective channels, including Shaker, TPK, and Kir-like types, and their roles in plant physiology.
Area of Science:
- Plant Physiology
- Molecular Biology
- Biochemistry
Background:
- Potassium (K(+)) is the most abundant cation in plant cytosol.
- Efficient K(+) transport from soil to growing organs is crucial for plant development.
- K(+) uptake and internal fluxes are regulated by various transporters and channels.
Purpose of the Study:
- To describe identified K(+)-selective channel families in plants.
- To review the regulation mechanisms of these channels.
- To elucidate the physiological functions of these channels in plants.
Main Methods:
- Literature review of identified plant K(+) channels.
- Analysis of Shaker, TPK, and Kir-like channel families.
- Synthesis of current knowledge on channel regulation and function.
Main Results:
- Identification and classification of Shaker, TPK, and Kir-like K(+) channels in plants.
- Overview of the known regulatory mechanisms governing these channels.
- Summary of the diverse physiological roles these channels play in plant life.
Conclusions:
- Shaker, TPK, and Kir-like channels are key players in plant K(+) homeostasis.
- Understanding these channels' regulation and function is vital for plant growth and development.
- Further research into K(+) channel mechanisms can inform agricultural applications.
Related Concept Videos
01:25Cell Signaling in Plants
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...
01:19Ion Channels
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
02:12Short-distance Transport of Resources
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.
01:27C4 Pathway and CAM
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...
C4 Pathway
The C4 pathway is used by plants such as...
02:00Photoreceptors and Plant Responses to Light
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.
02:45Biological Clocks and Seasonal Responses
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.