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

What is Photosynthesis?00:39

What is Photosynthesis?

111.0K
Photosynthesis is a multipart, biochemical process that occurs in plants as well as in some bacteria. It captures carbon dioxide and solar energy to produce glucose. Glucose stores chemical energy in the form of carbohydrates. The overall biochemical formula of photosynthesis is 6 CO2 + 6 H2O + Light energy → C6H12O6 + 6 O2. Photosynthesis releases oxygen into the atmosphere and is largely responsible for maintaining the Earth’s atmospheric oxygen content.
111.0K
What is Photosynthesis?01:00

What is Photosynthesis?

19.8K
All living organisms on Earth are directly or indirectly dependent on photosynthesis. It is the only biological process that can capture energy from sunlight and convert it into chemical energy that every organism can use to power its metabolism. Photosynthesis is also the source of oxygen required by many living organisms.
Types of Organisms Based on their Modes of Nutrition
Broadly, there are two main categories of organisms based on their modes of nutrition — autotrophs and...
19.8K
Routes of Persuasion02:20

Routes of Persuasion

68.5K
Persuasion is the process of changing our attitude toward something based on some kind of communication. Much of the persuasion we experience comes from outside forces. How do people convince others to change their attitudes, beliefs, and behaviors? What communications do you receive that attempt to persuade you to change your attitudes, beliefs, and behaviors?
68.5K
Oxygenic Photosynthesis01:26

Oxygenic Photosynthesis

732
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...
732
Anoxygenic Photosynthesis01:30

Anoxygenic Photosynthesis

1.3K
Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...
1.3K
Feedback Inhibition00:46

Feedback Inhibition

57.0K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.0K

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

Leveraging time-series point clouds for dynamic crop canopy monitoring: Quantifying phenotypic variability and assessing leaf-level photosynthetic contributions.

Plant phenomics (Washington, D.C.)·2026
Same author

Toxic effects of environmental-level polychlorinated biphenyls on Litopenaeus vannamei: Multi-omics integration of oxidative stress, ferroptosis, metabolism, intestinal microbiota, and nutritional quality.

Environmental research·2026
Same author

Non-destructive quantification of shoot apical meristem homeostasis for prediction of plant architecture and biomass using robot-based 3D imaging and photosynthesis measurements.

Plant communications·2026
Same author

Transgenerational Transfer and Effects of Polystyrene Nanoplastics in the Floating Macrophyte <i>Spirodela polyrhiza</i>.

Environmental science & technology·2026
Same author

Ammonia stress induces hepatotoxicity in hybrid grouper: histological, oxidative, inflammatory, and metabolomic responses.

Fish physiology and biochemistry·2026
Same author

Decoy Nanoparticles and Protein Corona Modulation: A Novel Frontier in Sepsis Treatment.

International journal of nanomedicine·2026
Same journal

Planetary Boundary for Novel Entities: Time for a Reboot.

Environmental science & technology·2026
Same journal

Coordination-Engineered Fe Single Atoms Enable Synergistic PVC Upcycling into Fuel-Range Hydrocarbons via Fenton-Like Pathway.

Environmental science & technology·2026
Same journal

Ambitious Co-scaling of Carbon Dioxide Removal and Decarbonization Delivers Better Climate Outcomes Than Strategies That Prioritize Efforts in One Domain.

Environmental science & technology·2026
Same journal

Can Data Mining Improve Methane Correction Factors for Urban, Nonsewered Sanitation?

Environmental science & technology·2026
Same journal

Meteorologically Driven Changes in Future Global Air Quality: Physical and Monetized Impacts.

Environmental science & technology·2026
Same journal

Microbiome-Based Framework for Achieving Simultaneous Efficient Transformation of Persistent Organic Pollutants and Restored Biogeochemical Cycling.

Environmental science & technology·2026
查看所有相关文章

相关实验视频

Updated: Jan 25, 2026

An Optimized Hemagglutination Inhibition HI Assay to Quantify Influenza-specific Antibody Titers
06:34

An Optimized Hemagglutination Inhibition HI Assay to Quantify Influenza-specific Antibody Titers

Published on: December 1, 2017

37.8K

特定路线的植物毒性:叶状聚乙烯纳米塑料抑制了大米光合作用.

Ruijie Zhu1, Yuhuai Wang2, Yuan Yuan3,4

  • 1State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of Environment, Nanjing University, Nanjing 210023, China.

Environmental science & technology
|January 23, 2026
PubMed
概括
此摘要是机器生成的。

应用于大米叶的聚乙烯纳米颗粒 (PSNP) 通过积聚在叶绿体中来抑制光合作用,从而损害了关键的光合作用过程. 这种叶子暴露对作物产量和全球粮食安全构成威胁.

关键词:
类塑料是一种类塑料.定位化,定位化的地方.暴露路径 暴露路径纳米塑料的纳米塑料光合作用 光合作用.转录组 (transcriptome) 是一个转录组.

更多相关视频

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
09:43

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits

Published on: January 3, 2025

3.4K
Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support
05:22

Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support

Published on: January 25, 2022

4.2K

相关实验视频

Last Updated: Jan 25, 2026

An Optimized Hemagglutination Inhibition HI Assay to Quantify Influenza-specific Antibody Titers
06:34

An Optimized Hemagglutination Inhibition HI Assay to Quantify Influenza-specific Antibody Titers

Published on: December 1, 2017

37.8K
Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
09:43

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits

Published on: January 3, 2025

3.4K
Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support
05:22

Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support

Published on: January 25, 2022

4.2K

科学领域:

  • 环境科学 环境科学
  • 植物生物学 植物生物学
  • 纳米技术 纳米技术

背景情况:

  • 纳米粒子 (NP) 在环境中越来越普遍.
  • 聚乙烯NP (PSNP) 是常见的环境污染物.
  • PS NP对作物植物的影响需要进一步调查.

研究的目的:

  • 调查大米 (Oryza sativa L.) 中的PS NPs的植物毒性.
  • 为了比较根与叶暴露于PS NP的影响.
  • 为了阐明PSNP诱导的光合作用抑制的机制.

主要方法:

  • 用不同的PSNP剂量进行水培和土壤暴露实验.
  • 混焦成像用于追踪 PS NP 在大米叶中的定位.
  • 生物化学分析测量光合作用色素含量,酶活动和ATP生产.
  • 对光合作用速率,口腔导电率和透气的生理测量.
  • 转录组分析以确定遗传反应.

主要成果:

  • 叶子暴露于PS NPs导致持续的光合作用抑制,而根暴露仅在高剂量下抑制光合作用.
  • 在大米叶中积累的PSNP,与叶绿体局部化,导致受光依赖反应和碳固定受损.
  • 观察到光合作用色素,希尔反应活性,ATP生产,净光合作用率,鲁比斯科活性,口腔导电性和透气率的显著减少.
  • 转录组分析揭示了核心光合作用途径和相关基因的下调.

结论:

  • 叶子暴露于PSNP会诱导大米显著的植物毒性,主要是通过破坏质细胞水平的光合作用.
  • 在质体内PSNP的积累和同位是驱动光合作用抑制的关键机制.
  • 大气中的NP代表着对农业生产率和全球粮食安全的新兴威胁.