Related Experiment Video
Updated: Aug 29, 2025
09:49
Divergence of Root Microbiota in Different Habitats based on Weighted Correlation Networks
Published on: September 25, 2021
4.4K
Species abundance correlations carry limited information about microbial network interactions
Susanne Pinto1, Elisa Benincà2, Egbert H van Nes3
1Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands.
Plos Computational Biology
|September 9, 2022
Summary
Correlation-based methods can suggest bacterial interactions in ecological communities, but are unreliable for determining interaction types. Independent validation is crucial for accurate ecological network analysis.
Area of Science:
- Ecology
- Microbiology
- Computational Biology
Background:
- Inferring interspecific interactions is vital for understanding ecological communities.
- Correlation-based methods using cross-sectional abundance data are common for inferring microbial interactions.
Purpose of the Study:
- To evaluate the reliability of correlation-based methods for inferring interaction networks.
- To assess the influence of host variability on interaction network inference.
Main Methods:
- Simulated bacterial communities using the generalized Lotka-Volterra model.
- Varied model parameters to represent host-specific variability.
- Analyzed correlations between bacterial abundances to infer interaction networks.
Main Results:
- Correlations can indicate the presence of bacterial interactions, especially with low measurement noise and high variation in interaction strengths.
- Interaction network type, process noise, and non-equilibrium sampling affected inference reliability.
- Correlation signs often matched the strongest pairwise interaction but not always; competitive and exploitative interactions could yield similar correlation patterns.
Conclusions:
- Cross-sectional abundance data provide limited information on specific interaction types.
- Correlation-based inference of ecological interaction networks requires independent validation.
More Related Videos
Related Concept Videos
01:28Gene Regulation in Microbial Communities: Quorum Sensing
82
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
82
01:20Applications of Molecular Taxonomy
76
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
76
02:26Protein Networks
4.1K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.1K
01:30Environmental Applications of Microorganisms
187
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
187
01:29Modern Molecular Taxonomy
109
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
109
01:27Diversity of Protists II
112
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
112