Plant Mitochondrial Genome Map (PMGmap): A Software Tool for
Comprehensive Visualization of Coding, Non-coding and Genome Features of
Plant Mitochondrial Genomes
Abstract
Genome visualization tools are important for exploring genomic features
and their interactions. Currently, visualization of the plant
mitochondrial genomes (mitogenome) depends on those tools designed
originally for animal mitogenomes and plant plastomes. These tools
cannot faithfully present features unique to the plant mitogenomes, such
as non-linear exon arrangement for genes, prevalence of functional
non-coding features, and complex chromosomal architectures. To address
these challenges, a software package plant mitochondrial genome map
(PMGmap), was developed using Python programming language. PMGmap can
draw genes at exon levels, draw cis- and trans-splicing gene maps, draw
non-coding features, draw repetitive sequences, scale the genic regions
using a scaling the genic regions on the genome (SGM) algorithm, and
draw multiple chromosomes simultaneously. We compared PMGmap with other
leading tools on 405 plant mitogenomes and found that PMGmap allowed the
visualization of the above-mentioned features better than those tools.
We believe PMGmap will become an invaluable tool for plant mitogenome
research. The web and container versions and the source code of PMGmap
can be accessed at http://www.1kmpg.cn/pmgmap.