Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

The Calvin Benson Cycle01:46

The Calvin Benson Cycle

4.4K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.4K
Photosystem II01:22

Photosystem II

69.6K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
69.6K
The Calvin Cycle01:40

The Calvin Cycle

73.4K
Overview
73.4K
Photosystem I01:27

Photosystem I

61.6K
Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
61.6K
The Z-Scheme of Electron Transport in Photosynthesis01:34

The Z-Scheme of Electron Transport in Photosynthesis

9.8K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
9.8K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

20.1K
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.
20.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Rapid dehydration drives a nondiffusional drop in C<sub>3</sub> photosynthesis that aligns with phosphate limitation.

The New phytologist·2026
Same author

Fast dehydration reduces bundle sheath conductance in C<sub>4</sub> maize and sorghum.

The New phytologist·2024
Same author

Instantaneous growth: a compact measure of efficient carbon and nitrogen allocation in leaves and roots of C<sub>3</sub> and C<sub>4</sub> plants.

Physiologia plantarum·2024
Same author

The operation of PEPCK increases light harvesting plasticity in C<sub>4</sub> NAD-ME and NADP-ME photosynthetic subtypes: A theoretical study.

Plant, cell & environment·2024
Same author

The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation.

Photosynthesis research·2023
Same author

C<sub>4</sub> maize and sorghum are more sensitive to rapid dehydration than C<sub>3</sub> wheat and sunflower.

The New phytologist·2023

相关实验视频

Updated: May 27, 2025

Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
10:20

Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses

Published on: August 9, 2019

12.3K

量化光合作用限制的量化

Chandra Bellasio1,2,3,4

  • 1Laboratory of Theoretical and Applied Crop Ecophysiology, Department of Chemistry, Biology and Biotechnology, Università Degli Studi Di Perugia, 06122, Perugia, Italy. chandra.bellasio@unipg.it.

Photosynthesis research
|February 18, 2025
PubMed
概括

了解植物的二氧化碳同化是提高作物产量的关键. 这项研究提供了一个统一的框架,以准确量化限制二氧化碳吸收的因素,简化复杂的分析.

关键词:
生物化学 生物化学贡献 贡献 贡献控制,敏感性 控制,敏感性限制限制的限制限制的限制梅索菲尔 (Mesophyll) 是一种存在于平面的生物.建模模型 建模模型非扩散性的非扩散性.其他非口腔材料.分区分区分区分区分区分区分区分区分在口腔上有牙.

更多相关视频

High-Throughput Analysis of Non-Photochemical Quenching in Crops Using Pulse Amplitude Modulated Chlorophyll Fluorometry
10:08

High-Throughput Analysis of Non-Photochemical Quenching in Crops Using Pulse Amplitude Modulated Chlorophyll Fluorometry

Published on: July 6, 2022

4.1K
Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis
10:46

Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis

Published on: December 9, 2022

1.9K

相关实验视频

Last Updated: May 27, 2025

Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
10:20

Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses

Published on: August 9, 2019

12.3K
High-Throughput Analysis of Non-Photochemical Quenching in Crops Using Pulse Amplitude Modulated Chlorophyll Fluorometry
10:08

High-Throughput Analysis of Non-Photochemical Quenching in Crops Using Pulse Amplitude Modulated Chlorophyll Fluorometry

Published on: July 6, 2022

4.1K
Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis
10:46

Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis

Published on: December 9, 2022

1.9K

科学领域:

  • 植物生理学 植物生理学
  • 光合作用研究研究光合作用.
  • 生物物理建模 生物物理建模

背景情况:

  • 精确量化影响二氧化碳 (CO2) 吸收的因素对于了解植物功能和提高作物生产率至关重要.
  • 目前用于量化二氧化碳同化限制的方法各不相同,往往会导致混,常见的错误是过度强调扩散电阻.
  • 需要一种一致和综合的方法来分析影响植物二氧化碳吸收的复杂因素.

研究的目的:

  • 制定一套一致的定义和一个通用的框架来量化二氧化碳同化限制.
  • 整合和协调各种现有的分析二氧化碳吸收的方法.
  • 为研究植物生产率的研究人员提供一个明确和适用的工具.

主要方法:

  • 开发一个通用的框架,整合以前的方法来量化二氧化碳同化限制.
  • 为关键指标 (如限制,贡献和敏感性) 建立一套一致的定义.
  • 在可下载电子表格格式中创建十个工作示例.

主要成果:

  • 已经建立了一个统一的框架来量化二氧化碳同化限制.
  • 拟议的框架简化了影响二氧化碳吸收的复杂因素的分析.
  • 通过更全面的方法来解决传播作用的常见高估.

结论:

  • 开发的框架提供了一种一致和综合的方法来量化控制二氧化碳吸收的因素.
  • 这项工作澄清和简化了对植物生产率限制的分析.
  • 提供的示例和电子表格有助于在各种研究问题中应用这些概念.