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. 2022 Feb 28;13:849080. doi: 10.3389/fmicb.2022.849080

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Copyright © 2022 Miura, Nagata, Tamaki, Tomita and Kanai.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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GCSI and number of G2Is in the bacterial phylogeny. The GC skew index and numbers of G2Is in representative complete bacterial genomes (1,774 genomes) are shown. Bacterial phyla are shown on left and each corresponding branch on the bacterial phylogenic tree is colored. The numbers in brackets represent the number of genomes in each phylum. The position of the outgroup [Candidatus Saccharibacteria oral taxon TM7x (RefSeq assembly accession: GCF_000803625.1)] is indicated by the asterisk. The orange line in the middle panel indicates the GC skew index of the longest genome in each bacterial species. The numbers of G2Is are also shown on the right (red line: G2Is with bacterial-C type IEPs; blue line: G2Is with other IEPs).