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

Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

752
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
752
Cell Signaling in Plants01:25

Cell Signaling in Plants

6.7K
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...
6.7K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

28.7K
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.
28.7K
Bacterial Signaling01:30

Bacterial Signaling

41.8K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
41.8K
Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

4.9K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
4.9K
Redox Reactions01:24

Redox Reactions

59.0K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
59.0K

You might also read

Related Articles

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

Sort by
Same author

Unsupervised Data Driven Clustering of the Neurological Assessments of People With Traumatic SCI Focusing on Sensorimotor Complete Injuries.

Neurorehabilitation and neural repair·2026
Same author

Cognitive offloading, critical thinking and attitudes towards artificial intelligence in the era of ChatGPT: a comparative study of artificial intelligence-assisted and manual task performance in young adults.

Cognitive processing·2026
Same author

Establishing communities of practice in undergraduate science classrooms.

Journal of microbiology & biology education·2026
Same author

Linking neurological status to functional outcomes in spinal cord injury: a multi-class, task-specific approach.

BMC biomedical engineering·2026
Same author

Effect of opioid-free versus opioid-based anaesthesia among surgical patients in public health care centers: A community medicine perspective.

Bioinformation·2026
Same author

Exploring synthetic controls in rare diseases with a proof of concept in spinal cord injury.

BMC medicine·2025

Related Experiment Video

Updated: Feb 23, 2026

Real-Time Detection of Reactive Oxygen Species Production in Immune Response in Rice with a Chemiluminescence Assay
05:44

Real-Time Detection of Reactive Oxygen Species Production in Immune Response in Rice with a Chemiluminescence Assay

Published on: November 25, 2022

5.3K

Redox-mediated quorum sensing in plants.

Alexandra W Fuller1, Phoebe Young1, B Daniel Pierce1,2

  • 1Departments of Biology and Chemistry, Emory University, Atlanta, GA, United States of America.

Plos One
|September 14, 2017
PubMed
Summary
This summary is machine-generated.

Plant roots use chemical signals called xenognosins to interact in the soil. This study shows how these signals trigger different root growth responses in parasitic versus non-parasitic plants.

More Related Videos

Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana
04:11

Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana

Published on: May 21, 2019

14.1K
Author Spotlight: Advancing Therapeutics to Treat Vibriosis in Humans and Aquatic Organisms
03:29

Author Spotlight: Advancing Therapeutics to Treat Vibriosis in Humans and Aquatic Organisms

Published on: May 31, 2024

986

Related Experiment Videos

Last Updated: Feb 23, 2026

Real-Time Detection of Reactive Oxygen Species Production in Immune Response in Rice with a Chemiluminescence Assay
05:44

Real-Time Detection of Reactive Oxygen Species Production in Immune Response in Rice with a Chemiluminescence Assay

Published on: November 25, 2022

5.3K
Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana
04:11

Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana

Published on: May 21, 2019

14.1K
Author Spotlight: Advancing Therapeutics to Treat Vibriosis in Humans and Aquatic Organisms
03:29

Author Spotlight: Advancing Therapeutics to Treat Vibriosis in Humans and Aquatic Organisms

Published on: May 31, 2024

986

Area of Science:

  • Plant-microbe interactions
  • Chemical signaling in the rhizosphere
  • Plant development and recognition

Background:

  • The rhizosphere is a complex soil zone shaped by plant-microbe interactions.
  • Xenognosins, host-derived signals, are crucial for parasitic plant development.
  • Reactive oxygen species (ROS) and calcium ions (Ca2+) are implicated in root recognition.

Purpose of the Study:

  • To compare the effects of the xenognosin dimethoxybenzoquinone (DMBQ) on parasitic (Striga asiatica) and non-parasitic (Arabidopsis thaliana) plants.
  • To investigate the role of calcium signaling and ROS production in mediating plant responses to xenognosins.
  • To elucidate the chemical mechanisms underlying rhizosphere interactions.

Main Methods:

  • Exposure of S. asiatica and A. thaliana to DMBQ.
  • Measurement of cytoplasmic Ca2+ concentration and ROS production.
  • Inhibition of Ca2+ channels and addition of antioxidants.
  • Phenotypic analysis of root development and host attachment organ formation.

Main Results:

  • DMBQ increased Ca2+ in both plant types, but elicited distinct phenotypic responses.
  • S. asiatica developed haustoria and decreased root-tip ROS, while A. thaliana increased ROS and arrested root growth.
  • Blocking Ca2+ channels or adding antioxidants reduced DMBQ responses in both species.
  • Ca2+ appears to regulate NADPH oxidases, sustaining ROS production via a redox cycle.

Conclusions:

  • Xenognosin perception triggers conserved Ca2+-dependent signaling pathways with divergent downstream effects in parasitic and non-parasitic plants.
  • ROS production and Ca2+ signaling form a redox circuit critical for root recognition and developmental plasticity in the rhizosphere.
  • The underlying chemical reaction-diffusion network provides a framework for understanding rhizosphere architecture.