过度表达血H+ATPase在平衡碳水使用中的双重功能
Hangjin Jiang1,2, Jinghan Su1, Zirong Ren3
1Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
Science advances
|November 8, 2024
概括
提高工厂用水效率 (WUE) 是至关重要的. 这项研究发现,过度表达血H+-ATPases在波动的光线条件下意外地提高了口腔反应能力和WUE.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 计算生物学 计算生物学
背景情况:
- 胃体对光变的反应比光合作用更慢,减少了植物的用水效率 (WUE).
- 尽管有许多潜在的目标,但在加速口腔反应方面取得了有限的进展.
研究的目的:
- 通过机械模型识别和优先考虑加速口腔运动的目标.
- 为了研究血膜H+-ATPases在口腔反应和波动光下的WUE中的作用.
主要方法:
- 机械模型被用来建立影响口腔动学的目标层次结构.
- 进行实验验证,以测试模型中的预测.
主要成果:
- 建模预测,过度表达血H+-ATPases可以加速口腔反应,在波动的光线下增强WUE.
- 实验证实了这一反直觉的预测,证明H+-ATPases在改善WUE方面发挥了意想不到的作用.
结论:
- 等离子膜H+-ATPases具有双重功能,根据光线条件,促进碳同化和水的使用.
- 结合实验方法的模拟与实验方法对于未来加强口腔功能和WUE的努力至关重要.
更多相关视频
12:18A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response
Published on: April 17, 2016
10.2K
07:38Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane
Published on: March 30, 2015
9.2K
相关概念视频
ATP Driven Pumps I: An Overview
8.0K
ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and...
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and...
8.0K
ATP Driven Pumps III: V-type Pumps
3.6K
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
3.6K
Short-distance Transport of Resources
15.6K
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.
15.6K
Tonicity in Plants
53.1K
Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.
53.1K
C4 Pathway and CAM
45.3K
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...
45.3K
Reabsorption and Secretion in the DCT and Collecting Duct
924
The early phase of the DCT manages the reabsorption of approximately 10-15% of filtered water, 5–10% of filtered sodium, and 5–10% of filtered chloride. This process is facilitated by Na+–Cl− symporters in apical membranes and sodium-potassium pumps, as well as Cl− leakage channels in basolateral membranes. The early DCT also stands out as a site where parathyroid hormone (PTH) stimulates calcium reabsorption, depending on the body's requirements.
The distal...
The distal...
924
