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Related Concept Videos

Convergent Evolution01:54

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...

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Generation of Chimeric Axolotls with Mutant Haploid Limbs Through Embryonic Grafting
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Salamander-Batrachochytrium salamandrivorans Interactions Through Dual Transcriptomics.

María Torres-Sánchez1,2,3

  • 1Department of Life, Health, and Environmental Sciences University of L'Aquila L'Aquila Italy.

Ecology and Evolution
|July 6, 2026
PubMed
Summary

This study reveals how salamanders and the pathogen Batrachochytrium salamandrivorans (Bsal) interact at the gene expression level. Understanding these host-pathogen gene expression changes is crucial for conserving salamander biodiversity.

Keywords:
Batrachochytrium dendrobatidisBatrachochytrium salamandrivoransDesmognathusEuryceaNotophthalmusTylototritonco‐infectiondual RNA‐seq

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Area of Science:

  • * Ecology and Evolutionary Biology
  • * Molecular Biology
  • * Conservation Biology

Background:

  • * The amphibian chytrid fungus, Batrachochytrium salamandrivorans (Bsal), threatens salamander populations globally.
  • * Salamander susceptibility to Bsal varies, indicating host-specific defense mechanisms.
  • * Gene expression responses in both hosts and pathogens during infection are poorly understood.

Purpose of the Study:

  • * To characterize gene expression changes in salamanders and Bsal during their interaction.
  • * To investigate the role of host genetics in Bsal susceptibility.
  • * To explore Bsal's adaptive genetic strategies and potential for co-infection.

Main Methods:

  • * A multispecies comparative framework was used to analyze gene expression.
  • * Host and pathogen gene expression data were integrated.
  • * Bioinformatic analyses identified conserved and variable responses.

Main Results:

  • * Conserved gene expression patterns were observed in plethodontid salamanders.
  • * Bsal exhibited adaptive gene expression changes related to host susceptibility.
  • * A calmodulin-mediated pathway was implicated in Bsal virulence.

Conclusions:

  • * Simultaneous analysis of host and pathogen gene expression is vital for understanding species interactions.
  • * Bsal's virulence may be linked to specific gene expression pathways.
  • * Comparative studies are essential for predicting and mitigating Bsal's impact on salamander biodiversity.