Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Methods for Controlling Microbial Growth01:29

Methods for Controlling Microbial Growth

1.8K
Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
1.8K
Physical Methods for Controlling Microbial Growth: Temperature01:23

Physical Methods for Controlling Microbial Growth: Temperature

1.2K
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
1.2K
Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

1.3K
Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
1.3K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

28.5K
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.
28.5K
Meristems and Plant Growth02:36

Meristems and Plant Growth

49.5K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
49.5K
Population Growth00:57

Population Growth

28.6K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
28.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The amino terminus of PetD is essential for cytochrome b<sub>6</sub> f function and the negative feedback control of STT7 kinase.

Nature plants·2026
Same author

NPF2 is involved in intracellular pH regulation and ion balance in the diatom Phaeodactylum tricornutum.

The New phytologist·2026
Same author

Metabolic imaging of <i>Fragilariopsis cylindrus</i> in polar night conditions using full-field optical transmission tomography (FFOTT).

Biomedical optics express·2026
Same author

Interplay between high-energy quenching and state transitions in Chlamydomonas reinhardtii: a single-cell approach.

The New phytologist·2026
Same author

Phytochromes facilitate social behaviour in marine diatoms.

Nature communications·2026
Same author

Hidden diversity: Transcriptomic and photosynthetic variation among common 'wild type' Chlamydomonas strains.

The Plant journal : for cell and molecular biology·2025

Related Experiment Video

Updated: Feb 1, 2026

Author Spotlight: Accessible M&amp;M-Based Mouse Model for Investigating Binge Eating Disorder - Insights into Eating Behaviors, Anxiety, and Neural Mechanisms
05:15

Author Spotlight: Accessible M&M-Based Mouse Model for Investigating Binge Eating Disorder - Insights into Eating Behaviors, Anxiety, and Neural Mechanisms

Published on: January 10, 2025

1.7K

Chlororespiration Controls Growth Under Intermittent Light.

Wojciech J Nawrocki1, Felix Buchert1, Pierre Joliot1

  • 1Institut de Biologie Physico-Chimique, Unité Mixte de Recherche 7141, Centre National de la Recherche Scientifique-Sorbonne Université, 75005 Paris, France.

Plant Physiology
|December 1, 2018
PubMed
Summary
This summary is machine-generated.

Chlororespiration is vital for algae growth under fluctuating light. A key enzyme, Plastid Terminal Oxidase (PTOX), ensures efficient photosynthesis by managing redox balance during dark periods.

More Related Videos

Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities
05:34

Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities

Published on: February 2, 2018

19.8K
Light-Controlled Fermentations for Microbial Chemical and Protein Production
08:37

Light-Controlled Fermentations for Microbial Chemical and Protein Production

Published on: March 22, 2022

4.6K

Related Experiment Videos

Last Updated: Feb 1, 2026

Author Spotlight: Accessible M&amp;M-Based Mouse Model for Investigating Binge Eating Disorder - Insights into Eating Behaviors, Anxiety, and Neural Mechanisms
05:15

Author Spotlight: Accessible M&M-Based Mouse Model for Investigating Binge Eating Disorder - Insights into Eating Behaviors, Anxiety, and Neural Mechanisms

Published on: January 10, 2025

1.7K
Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities
05:34

Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities

Published on: February 2, 2018

19.8K
Light-Controlled Fermentations for Microbial Chemical and Protein Production
08:37

Light-Controlled Fermentations for Microbial Chemical and Protein Production

Published on: March 22, 2022

4.6K

Area of Science:

  • Plant Science
  • Biochemistry
  • Algal Biology

Background:

  • Photosynthetic function under steady-state light is understood, but responses to light fluctuations are not.
  • Chlororespiration, a respiratory chain in thylakoids, is common in photosynthetic organisms but its role is unclear.

Purpose of the Study:

  • Investigate the role of chlororespiration in intermittent light conditions.
  • Determine the function of Plastid Terminal Oxidase (PTOX) in algal growth and photosynthesis.

Main Methods:

  • Studied the green alga *Chlamydomonas reinhardtii*.
  • Utilized a mutant lacking PTOX2, the primary plastoquinol oxidase.
  • Analyzed redox relaxation kinetics and photosynthetic electron flow.

Main Results:

  • PTOX activity is essential for growth under intermittent light.
  • A *pto x2* mutant exhibited severe growth defects.
  • Intermittent light altered redox relaxation kinetics of the photosynthetic electron transfer chain.
  • Cyclic electron flow was stimulated at the expense of linear electron flow.

Conclusions:

  • Chlororespiration, specifically PTOX activity, is critical for optimizing photosynthesis under fluctuating light.
  • Proper redox relaxation during dark periods is key to efficient photosynthetic function during light periods.