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Related Concept Videos

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Prokaryotes are small unicellular organisms that include the domains—Archaea and Bacteria. Bacteria include many common organisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
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The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
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The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
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Updated: May 21, 2025

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution
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Archaea go multicellular under pressure.

Eva K Pillai1,2,3, Thibaut Brunet3

  • 1Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany.

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|April 3, 2025
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Summary
This summary is machine-generated.

A unique Dead Sea microbe transforms into a tissue-like structure under pressure. This discovery reveals novel microbial adaptation strategies in extreme environments.

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Area of Science:

  • Microbiology
  • Extremophile Research
  • Biophysics

Background:

  • The Dead Sea harbors unique microorganisms adapted to extreme hypersalinity and aridity.
  • Understanding microbial adaptation mechanisms is crucial for astrobiology and biotechnology.

Purpose of the Study:

  • To investigate the morphological and structural changes of a Dead Sea microbe under mechanical stress.
  • To characterize the novel tissue-like state induced by compression.

Main Methods:

  • Microscopic analysis (light and electron microscopy) of microbial samples.
  • Application of controlled mechanical compression to microbial cultures.
  • Biochemical assays to analyze cellular components.

Main Results:

  • A specific Dead Sea microbe exhibited a remarkable morphological transition when subjected to compression.
  • The microbe formed a cohesive, multicellular, tissue-like aggregate.
  • This transformation involved significant changes in cell-cell adhesion and extracellular matrix production.

Conclusions:

  • Dead Sea microbes possess sophisticated adaptation mechanisms, including the ability to form tissue-like structures under physical stress.
  • This finding opens new avenues for studying microbial plasticity and potential applications in biomaterials.