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Related Experiment Video

Updated: Jan 15, 2026

Transcriptome Analysis of Single Cells
07:27

Transcriptome Analysis of Single Cells

Published on: April 25, 2011

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In-depth transcriptome analysis of the Hardin crayfish, Faxonius wrighti.

Holly Gothard1, Carla Hurt1, Mostafa Rahnama1

  • 1Department of Biology, Tennessee Technological University, 1 William L Jones Dr, Cookeville, TN 38505, USA.

Marine Genomics
|January 13, 2026
PubMed
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Genomic resources for the endangered Hardin crayfish (Faxonius wrighti) were established using multi-tissue transcriptomics. This provides a foundation for understanding how this keystone species responds to environmental stressors.

Area of Science:

  • Genomics
  • Ecology
  • Conservation Biology

Background:

  • Freshwater crayfish are vital ecological keystone species facing population declines.
  • The Hardin crayfish (Faxonius wrighti), endemic to the Tennessee River basin, is vulnerable to habitat degradation.
  • Genomic resources are crucial for understanding species' responses to environmental stressors.

Purpose of the Study:

  • To establish a comprehensive, multi-tissue transcriptome for the Hardin crayfish (Faxonius wrighti).
  • To identify molecular mechanisms underlying physiological responses to environmental stressors in F. wrighti.
  • To create the first genomic resource for the genus Faxonius.

Main Methods:

  • RNA-Sequencing (RNA-Seq) was performed on 11 F. wrighti individuals.
Keywords:
CrayfishFreshwaterGillsHepatopancreasRNA-SeqTranscriptomics

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  • Hepatopancreas, gill, and abdominal muscle tissues were utilized for transcriptome generation.
  • De novo assembly was conducted using Trinity, followed by annotation against major databases.

    • Main Results:

    • A multi-tissue transcriptome yielded 91,808 unigenes, with 45.3% annotated.
    • Differential gene expression analysis revealed significant tissue-specific expression patterns.
    • Stress-response pathways, including cytochrome P450 metabolism and Na+/K+-ATPase regulation, were highly enriched in specific tissues.

    Conclusions:

    • The generated transcriptome is the first genomic resource for the genus Faxonius.
    • This resource will aid future studies on population-level adaptation and responses to environmental stressors.
    • Tissue-specific transcriptomics is valuable for non-model endangered crayfish species.