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Related Concept Videos

Epigenetic Regulation01:46

Epigenetic Regulation

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

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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,...
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Global Regulatory Systems01:28

Global Regulatory Systems

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Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
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Constitutive and Regulated Gene Expression01:27

Constitutive and Regulated Gene Expression

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Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
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Cis-regulatory Sequences02:02

Cis-regulatory Sequences

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Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
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Prokaryotic Transcriptional Activators and Repressors01:58

Prokaryotic Transcriptional Activators and Repressors

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The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...
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Related Experiment Video

Updated: Jun 11, 2025

Preparing and Rearing Axenic Insects with Tissue Cultured Seedlings for Host-Gut Microbiota Interaction Studies of the Leaf Beetle
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Epigenetic Regulation in Insect-Microbe Interactions.

Yiling Lai1,2, Sibao Wang1,2

  • 1CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China.

Annual Review of Entomology
|October 7, 2024
PubMed
Summary

Epigenetic mechanisms regulate insect immunity and microbial infections. Understanding these processes offers new strategies for pest control and disease mitigation.

Keywords:
DNA methylationhistone modificationsinsect immunityinsect–microbe interactionsmicrobial pathogenicitysmall RNAs

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Area of Science:

  • * Molecular Biology
  • * Entomology
  • * Immunology

Background:

  • * Insects engage in complex interactions with diverse microbes, including pathogens like fungi, bacteria, and viruses.
  • * Host immune responses and microbial pathogenicity necessitate precise gene expression regulation.
  • * Epigenetic mechanisms are crucial for modulating these gene expression programs.

Purpose of the Study:

  • * To review recent discoveries in epigenetic mechanisms governing insect-microbe interactions.
  • * To highlight the roles of DNA methylation, histone modifications, and noncoding RNAs.
  • * To explore the implications for pest control and disease management.

Main Methods:

  • * Comprehensive literature review of recent research on epigenetics in insect-microbe interactions.
  • * Analysis of studies focusing on gene expression regulation in insect immunity and microbial pathogenicity.
  • * Synthesis of findings on epigenetic modifications like DNA methylation, histone modifications, and noncoding RNAs.

Main Results:

  • * Epigenetic mechanisms, including DNA methylation, histone modifications, and noncoding RNAs, are key regulators of insect immune responses and microbial pathogenicity.
  • * These epigenetic processes fine-tune gene expression, impacting the dynamic interplay between insects and microbes.
  • * Recent insights reveal the intricate molecular pathways involved.

Conclusions:

  • * Epigenetic regulation is fundamental to insect-microbe interactions.
  • * A deeper understanding of these mechanisms can lead to novel biological control strategies for insect pests.
  • * This knowledge also holds potential for mitigating vector-borne diseases.