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Related Concept Videos

Genomics02:02

Genomics

Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

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...
Proteomics01:33

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...
Evolution of Microbial Genome01:08

Evolution of Microbial Genome

Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
Methods to Assess Microbial Communities01:19

Methods to Assess Microbial Communities

Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

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...

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Updated: Jun 26, 2026

Metagenomic Analysis of Silage
08:43

Metagenomic Analysis of Silage

Published on: January 13, 2017

Metagenomics.

R D Sleator1, C Shortall, C Hill

  • 1Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland. r.sleator@ucc.ie

Letters in Applied Microbiology
|January 17, 2009
PubMed
Summary
This summary is machine-generated.

Metagenomics, the study of microbial genomes, reveals vast uncharacterized prokaryotic diversity. This approach uncovers novel genes and metabolic pathways, advancing microbial systems biology.

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Last Updated: Jun 26, 2026

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11:23

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08:09

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Published on: September 15, 2015

Area of Science:

  • Microbiology
  • Genomics
  • Bioinformatics

Background:

  • Prokaryotic cells on Earth number approximately 4-6 x 10^30, with most remaining uncharacterized.
  • This vast microbial diversity holds potential for discovering novel genes, metabolic pathways, and valuable products.
  • Metagenomics enables the analysis of collective microbial genomes within specific environments.

Purpose of the Study:

  • To review recent sequence-based metagenomic analyses of diverse environments.
  • To highlight the discoveries made through metagenomic studies in various niches.
  • To emphasize the role of metagenomics in microbial systems biology.

Main Methods:

  • Sequence-based metagenomic analysis.
  • Functional analysis of collective microbial genomes.
  • Comparative analysis of microbiomes from soil, marine water, and gut environments.

Main Results:

  • Uncovered previously unknown microbial diversity in extreme environments.
  • Revealed the extent of symbiotic relationships in insect and human guts.
  • Identified novel genes and metabolic pathways from uncharacterized prokaryotes.

Conclusions:

  • Metagenomics is crucial for understanding microbial diversity and function.
  • This field is essential for exploiting microbial genetic resources.
  • Metagenomics plays a vital role in the advancement of microbial systems biology.