AI Article Synopsis
- Using gene order to study evolutionary relationships can help resolve complex species connections, as demonstrated in the marine cyanobacteria Prochlorococcus.
- The research involved analyzing orthologous gene sets from 12 Prochlorococcus species and one related species, Synechococcus, employing statistical methods to create phylogenetic trees based on gene arrangements.
- This study is significant as it is the first to apply gene order data at the genus level in bacteria, highlighting its potential to clarify the Tree of Life.
Article Abstract
Background: Using gene order as a phylogenetic character has the potential to resolve previously unresolved species relationships. This character was used to resolve the evolutionary history within the genus Prochlorococcus, a group of marine cyanobacteria.
Methodology/principal Findings: Orthologous gene sets and their genomic positions were identified from 12 species of Prochlorococcus and 1 outgroup species of Synechococcus. From this data, inversion and breakpoint distance-based phylogenetic trees were computed by GRAPPA and FastME. Statistical support of the resulting topology was obtained by application of a 50% jackknife resampling technique. The result was consistent and congruent with nucleotide sequence-based and gene-content based trees. Also, a previously unresolved clade was resolved, that of MIT9211 and SS120.
Conclusions/significance: This is the first study to use gene order data to resolve a bacterial phylogeny at the genus level. It suggests that the technique is useful in resolving the Tree of Life.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2585141 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0003837 | PLOS |
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