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Phylogenetic Trees03:21

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Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
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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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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...
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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
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A Practical Guide to Phylogenetics for Nonexperts
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Iroki: automatic customization and visualization of phylogenetic trees.

Ryan M Moore1, Amelia O Harrison2, Sean M McAllister2

  • 1Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, United States of America.

Peerj
|March 10, 2020
PubMed
Summary
This summary is machine-generated.

Iroki is a web tool that simplifies the interpretation of large phylogenetic trees for microbial diversity and evolutionary history studies. It automatically customizes complex trees using metadata, making scientific insights more accessible.

Keywords:
BioinformaticsData visualizationEnvironmental microbiologyMetagenomicsMicrobial ecologyMicrobiomePhylogenySequence analysisSoftwareViral ecology

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Area of Science:

  • Microbial Ecology
  • Bioinformatics
  • Evolutionary Biology

Background:

  • Phylogenetic trees are crucial for understanding microbial diversity and evolutionary history.
  • Increasing sequencing data generates large, complex trees that are difficult to interpret.
  • Manual tree customization is time-consuming and prone to errors.

Purpose of the Study:

  • To introduce Iroki, a user-friendly web interface for visualizing and customizing large phylogenetic trees.
  • To simplify the interpretation of complex microbial datasets.
  • To facilitate the exploration of biological and ecological trends from sequencing data.

Main Methods:

  • Developed Iroki, a web-based tool for automatic tree visualization and customization.
  • Utilized tab-separated text files for metadata input.
  • Applied Iroki to microbial ecology datasets with large trees (hundreds to thousands of nodes).

Main Results:

  • Iroki provides automatic customization of large phylogenetic trees based on metadata.
  • The tool simplifies scientific inferences from complex tree structures.
  • Demonstrated utility in various microbial ecology applications.

Conclusions:

  • Iroki enhances the interpretation of large phylogenetic trees for microbial research.
  • The web interface reduces the complexity and time associated with tree customization.
  • Iroki is a valuable tool for exploring evolutionary and ecological trends in sequencing data.