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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
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Microbiome composition and function within the Kellet's whelk perivitelline fluid.

Benjamin N Daniels1, Jenna Nurge1, Chanel De Smet1

  • 1Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, California, USA.

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This summary is machine-generated.

The Kellet

Keywords:
GO termRNA-seqantibiotic biosynthesisantimicrobial activitygene expressionmicrobial communitiesmicrobiome

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Area of Science:

  • Marine biology and microbial ecology.
  • Invertebrate developmental biology.
  • Host-microbe interactions.

Background:

  • Microbiomes play crucial roles in host health and development.
  • The perivitelline fluid (PVF) of invertebrates is a unique environment for microbial communities.
  • Kellet's whelk (Kelletia kelletii) embryos develop within PVF, requiring a supportive microenvironment.

Purpose of the Study:

  • To investigate the microbiome diversity and function within the perivitelline fluid of Kellet's whelk.
  • To explore potential symbiotic relationships and functional roles of the PVF microbiome in embryo development.
  • To identify novel microbial functions, such as antibiotic biosynthesis, within this encapsulated system.

Main Methods:

  • Utilized 16S rRNA gene long-read sequencing for microbiome profiling.
  • Employed RNA sequencing (RNA-seq) to analyze gene expression within the PVF microbiome.
  • Combined these methods to provide a comprehensive analysis of the invertebrate PVF microbiome.

Main Results:

  • Revealed a diverse bacterial community in Kellet's whelk PVF, with the Roseobacter genus being dominant.
  • Detected genes associated with host-microbe interactions, symbiosis, and quorum sensing.
  • Identified gene expression related to antibiotic biosynthesis, indicating potential defensive functions.

Conclusions:

  • The Kellet's whelk PVF harbors a symbiotic microbiome that likely supports embryo development.
  • The microbiome may provide protective functions through antibiotic production.
  • This study pioneers the use of combined 16S and RNA sequencing to study invertebrate PVF microbiomes.