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Related Concept Videos

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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Cooperative Binding of Transcription Regulators02:13

Cooperative Binding of Transcription Regulators

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Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

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Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
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Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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Combinatorial Gene Control02:33

Combinatorial Gene Control

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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  11. Brain Gene Regulatory Networks Coordinate Nest Construction In Birds.
  1. Home
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  11. Brain Gene Regulatory Networks Coordinate Nest Construction In Birds.

Related Experiment Video

Radioactive in situ Hybridization for Detecting Diverse Gene Expression Patterns in Tissue
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Radioactive in situ Hybridization for Detecting Diverse Gene Expression Patterns in Tissue

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Brain Gene Regulatory Networks Coordinate Nest Construction in Birds.

Yi-Ting Fang1,2, Hao-Chih Kuo1, Cheng-Yu Chen1,3

  • 1Biodiversity Research Center, Academia Sinica, Taipei, Taiwan.

Molecular Biology and Evolution
|June 25, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Avian nest construction is driven by adult neural plasticity, with gene expression changes linked to social cues like pair bonding. This study reveals sex-specific neurogenomic roles in nesting behavior.

Keywords:
nest constructionneural plasticityneurogenesispair bonding

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Grafting of Beads into Developing Chicken Embryo Limbs to Identify Signal Transduction Pathways Affecting Gene Expression
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Area of Science:

  • Neurobiology
  • Ethology
  • Genomics

Background:

  • Nest building is a crucial avian breeding behavior influenced by environmental and social cues.
  • Adult neuronal plasticity is hypothesized to control this behavioral plasticity, but neurogenomic evidence is limited.

Purpose of the Study:

  • To identify gene regulatory networks governing avian nest construction.
  • To investigate associations between these networks and neural circuit rewiring.
  • To understand the neurogenomic underpinnings of nesting behavior in zebra finches.

Main Methods:

  • Experimentally manipulated pair bonding and nest material availability in 30 pairs of zebra finches.
  • Conducted whole-transcriptome analysis on 300 samples from five brain regions.
  • Analyzed gene expression patterns in relation to behavioral components.
transcriptome

Main Results:

  • Nesting-associated gene expression was enriched with neural rewiring functions (neurogenesis, neuron projection).
  • Gene expression changes were observed in female motor/social networks and male dopaminergic systems.
  • Neurotranscriptomic changes were predominantly linked to pair bonding and showed sex-specific timing.

Conclusions:

  • Provides novel neurogenomic evidence for adult neural plasticity in avian nest construction.
  • Highlights the significant role of social interactions (pair bonding) in triggering these changes.
  • Uncovers genetic mechanisms underlying the evolution of nesting behavior.