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Related Concept Videos

Microbial Interactions: Predation01:28

Microbial Interactions: Predation

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Microbial predation refers to the process by which one microorganism kills and consumes another to obtain nutrients and energy. It encompasses both bacterial and protozoan predators. This interaction plays a crucial role in shaping microbial communities and regulating nutrient cycling.Bacterial Predators: Epibiotic vs. EndobioticBacterial predators are classified based on their mode of attack as either epibiotic or endobiotic. Epibiotic predators, such as Vampirococcus, attach to the surface of...
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Cholera01:25

Cholera

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Cholera is an acute gastrointestinal disease caused by the Gram-negative bacterium Vibrio cholerae. It is transmitted primarily via the fecal-oral route through the ingestion of contaminated water or food.Vibrio cholerae is a motile, Gram-negative bacterium of the family Vibrionaceae, primarily associated with waterborne outbreaks in areas with inadequate sanitation. Although over 200 serogroups of V. cholerae exist, only O1 and O139 are responsible for epidemic cholera. The O1 serogroup,...
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Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

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Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
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Predator-Prey Interactions02:39

Predator-Prey Interactions

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Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
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Evolutionary Processes in Microbes01:26

Evolutionary Processes in Microbes

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Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
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Bacterial Phylum Proteobacteria01:26

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Proteobacteria, one of the largest and most diverse bacterial phyla, encompasses a wide range of Gram-negative bacteria distinguished by their outer membrane composed of lipopolysaccharides. These microorganisms exhibit various metabolic capabilities, including phototrophy, chemolithotrophy, and heterotrophy, and thrive in diverse environments from soil to aquatic systems and host-associated niches. The phylum is divided into six classes: Alphaproteobacteria, Betaproteobacteria,...
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Vibrio cholerae: Model Organism to Study Bacterial Pathogenesis - Interview
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Vibrio cholerae as a predator: lessons from evolutionary principles.

Stefan Pukatzki1, Daniele Provenzano2

  • 1Department of Medical Microbiology and Immunology, University of Alberta Edmonton, AB, Canada.

Frontiers in Microbiology
|December 26, 2013
PubMed
Summary
This summary is machine-generated.

Vibrio cholerae causes cholera, a deadly diarrheal disease. This study proposes that V. cholerae uses its type VI secretion system for predation, enabling rapid growth and multiplication to cause severe illness.

Keywords:
Vibrio choleraecholeraintraguild predationmicrobiome modificationnutrient acquisitiontype VI secretion system

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Bacterial Pathogenesis

Background:

  • Diarrheal diseases are a leading cause of mortality in children under five globally.
  • Cholera, caused by Vibrio cholerae, results in millions of cases and over 120,000 deaths annually.
  • V. cholerae invades the small intestine, multiplies, and secretes toxins, leading to severe diarrhea.

Purpose of the Study:

  • To investigate the mechanism by which V. cholerae achieves rapid population growth during infection.
  • To explore the role of the type VI secretion system in V. cholerae's proliferation and virulence.

Main Methods:

  • The study proposes a hypothesis involving bacterial predation.
  • Further research would involve experimental validation of the proposed mechanism.

Main Results:

  • The proposed mechanism involves V. cholerae utilizing its type VI secretion system.
  • This system is hypothesized to facilitate intraspecies and intraguild predation.

Conclusions:

  • V. cholerae may use its type VI secretion system for predation to acquire nutrients.
  • This predation supports rapid growth and multiplication, contributing to cholera pathogenesis.