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Using Single-Worm Data to Quantify Heterogeneity in Caenorhabditis elegans-Bacterial Interactions

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Published on: July 22, 2022

Resource heterogeneity structures aquatic bacterial communities.

Mario E Muscarella^1,2, Claudia M Boot^3,4, Corey D Broeckling⁵

¹Department of Plant Biology, University of Illinois, Urbana-Champaign, IL, 61801, USA.

The ISME Journal

|May 5, 2019

Summary

This summary is machine-generated.

Microbial diversity is shaped by dissolved organic matter (DOM). Higher DOM concentration and molecular richness increase bacterioplankton diversity, impacting lake ecosystem structure and function.

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Area of Science:

Microbial ecology
Aquatic microbiology
Biogeochemistry

Background:

Microorganisms are influenced by resource availability.
Resource heterogeneity, besides concentration, may affect microbial diversity.
Dissolved organic matter (DOM) is a key resource for heterotrophic bacteria.

Purpose of the Study:

To investigate the relationship between DOM concentration, composition, and bacterioplankton diversity in north temperate lakes.
To determine how DOM influences bacterial alpha-diversity (richness and evenness) and beta-diversity (community composition).

Main Methods:

16S rRNA transcript sequencing to assess bacterial community structure.
Ecosystem metabolomics to analyze the composition of dissolved organic matter.
Statistical analysis of resource-diversity relationships in lake ecosystems.

Main Results:

Bacterial alpha-diversity was positively correlated with DOM concentration and the number of DOM molecules.
Bacterial community beta-diversity was influenced by both DOM concentration and composition.
The prevalence of generalist bacteria, inversely related to DOM concentration, could modulate the impact of DOM heterogeneity on community structure.

Conclusions:

DOM concentration and molecular richness are significant drivers of bacterioplankton diversity.
Changes in DOM composition can alter the structure and function of aquatic bacterial communities.
Metabolic interactions between bacteria and DOM are crucial for understanding lake ecosystem dynamics.