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6 results for “Praticolella mexicana”
Data from: Two complete mitochondrial genomes from Praticolella mexicana Perez, 2011 (Polygyridae) and gene order evolution in Helicoidea (Mollusca, Gastropoda)
Helicoidea is a diverse group of globally distributed land snails. While much is known regardingthe relationships of helicoid taxa, comparatively little is known about the evolution of themitochondrial genome in the superfamily. We sequenced two complete mitochondrial genomesfrom Praticolella mexicana Perez, 2011 representing the first such data from the helicoid familyPolygyridae, and used them in an evolutionary analysis of mitogenomic gene order. We foundthe mitochondrial genome of P. mexicana to be 14,008 bp in size, possessing the typical 37metazoan genes. Multiple alternate stop codons are used, as are incomplete stop codons, andmitogenome size and nucleotide content is consistent with other helicoid species. Our analysis ofgene order suggested that Helicoidea has undergone five mitochondrial rearrangements in thepast. Four rearrangements were limited to tRNA genes, including one homoplasticrearrangement in Helicidae and (Bradybaenidae+Camaena+P. mexicana). The fifthrearrangement, unique to Aegista, involved a protein coding gene.
Figure 1 from: Minton RL, Martinez Cruz MA, Farman ML, Perez KE (2016) Two complete mitochondrial genomes from Praticolella mexicana Perez, 2011 (Polygyridae) and gene order evolution in Helicoidea (Mollusca, Gastropoda). ZooKeys 626: 137-154. https://doi.org/10.3897/zookeys.626.9633
Figure 1 - Mitochondrial genome of Praticolella mexicana UTRGV and McAllen illustrated with an image of the species holotype (ANSP 426031). Gene order and sizes are shown relative to one another, not including non-coding regions. Genes are color coded by H (black) or L (red) strand. IUPAC single letter codes are used to identify tRNA genes.
Figure 3 from: Minton RL, Martinez Cruz MA, Farman ML, Perez KE (2016) Two complete mitochondrial genomes from Praticolella mexicana Perez, 2011 (Polygyridae) and gene order evolution in Helicoidea (Mollusca, Gastropoda). ZooKeys 626: 137-154. https://doi.org/10.3897/zookeys.626.9633
Figure 3 - Maximum likelihood phylogeny of gene order. Analysis in MLGO yielded a single tree. Branch support >50% is shown based on 100 bootstrap replicates. Bradybaenidae and Helicidae were recovered as monophyletic, but Helicoidea was not.
Figure 4 from: Minton RL, Martinez Cruz MA, Farman ML, Perez KE (2016) Two complete mitochondrial genomes from Praticolella mexicana Perez, 2011 (Polygyridae) and gene order evolution in Helicoidea (Mollusca, Gastropoda). ZooKeys 626: 137-154. https://doi.org/10.3897/zookeys.626.9633
Figure 4 - Ancestral gene order reconstructions for Helicoidea. Columns (A–E) correspond to labeled nodes in Figure 2. IUPAC single letter codes are used to identify tRNA genes. Rearrangements in red and blue are unique to Helicidae. The convergent rearrangement seen in Bradybaenidae, Camaena, and Praticolella is shown in yellow. The green rearrangement is unique to Aegista.
Figure 2 from: Minton RL, Martinez Cruz MA, Farman ML, Perez KE (2016) Two complete mitochondrial genomes from Praticolella mexicana Perez, 2011 (Polygyridae) and gene order evolution in Helicoidea (Mollusca, Gastropoda). ZooKeys 626: 137-154. https://doi.org/10.3897/zookeys.626.9633
Figure 2 - Maximum likelihood phylogeny of Stylommatophora protein coding genes. Analysis in IQTREE yielded a single tree (log likelihood = -89104.188) under the mtZOA+F+I+G4 model. Branch support >50% is shown based on 10,000 ultra-fast bootstrap replicates. Helicoidea, Bradybaenidae, and Helicidae were recovered as monophyletic. Nodes A-E refer to rearrangements shown in Figure 4.
Data from: Two complete mitochondrial genomes from Praticolella mexicana Perez, 2011 (Polygyridae) and gene order evolution in Helicoidea (Mollusca, Gastropoda)
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