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MEGA6: Molecular Evolutionary Genetics Analysis version 6.0.

Koichiro Tamura1, Glen Stecher, Daniel Peterson

  • 1Research Center for Genomics and Bioinformatics, Tokyo Metropolitan University, Hachioji, Tokyo, Japan.

Molecular Biology and Evolution
|October 18, 2013
PubMed
Summary
This summary is machine-generated.

The new Molecular Evolutionary Genetics Analysis (MEGA) software version 6.0 introduces timetree inference using the RelTime method. This update enhances phylogenetic analysis with improved tree searching and memory management for larger datasets.

Keywords:
phylogenyrelaxed clockssoftware

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Evolutionary Biology

Background:

  • The Molecular Evolutionary Genetics Analysis (MEGA) software is widely used for sequence alignment, phylogenetic tree construction, and molecular evolution studies.
  • Accurate estimation of divergence times is crucial for understanding evolutionary history.

Purpose of the Study:

  • To announce and describe the new features and improvements in version 6.0 of the MEGA software.
  • To introduce the implementation of the RelTime method for timetree inference.
  • To highlight enhancements in tree searching algorithms and memory management.

Main Methods:

  • Implementation of the RelTime method for estimating divergence times across a phylogeny.
  • Development of a graphical user interface (GUI) "Timetree Wizard" for simplified timetree construction.
  • Enhancement of tree searching algorithms for optimal tree inference under evolutionary criteria.
  • Improvement of memory management for handling larger sequence datasets.

Main Results:

  • MEGA version 6.0 now supports the inference of timetrees, providing divergence time estimates for all nodes in a phylogeny.
  • The Timetree Wizard offers a user-friendly approach to specifying phylogenetic and calibration constraints.
  • Enhanced algorithms improve the accuracy and efficiency of phylogenetic tree searches.
  • Increased memory capacity allows MEGA to process datasets twice the size of previous versions.

Conclusions:

  • MEGA version 6.0 represents a significant advancement in molecular evolutionary analysis software.
  • The inclusion of timetree inference and enhanced computational capabilities expands the utility of MEGA for evolutionary studies.
  • The software remains freely available, promoting accessibility for researchers worldwide.