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Special Issue "Mitochondria Genome"

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Genetics and Genomics".

Deadline for manuscript submissions: 30 November 2021.

Special Issue Editor

Prof. Dr. Ui Wook Hwang
E-Mail Website
Guest Editor
Department of Biology Education, Kyungpook National University, Daegu 41566, Korea
Interests: mitochondrial genome evolution; animal phylogeny (focusing on arthropods); population genetics

Special Issue Information

Dear Colleagues,

Mitochondria possess a remnant of the endosymbiont’s genome that varies considerably in size throughout eukaryotes, ranging from ~15 kb to 11 Mbp. Mitochondrial genomes are mostly circular, containing five to ~100 genes (usually 37 genes in metazoans). In recent decades, due to the rapid advance of next-generation sequencing technology and compact structure of mitochondrial genomes, complete mitochondrial genome data have been exponentially increased and accumulated. Extensive sequencing of mitochondrial genomes has established meaningful and unique features in gene arrangements and genetic codes as well as nucleotide sequence substitutions, shedding light on enigmatic phylogenetic relationships and evolutionary histories in eukaryotes, especially metazoans. Additionally, a mitochondrial gene component, COI is known for the most promising metazoan DNA barcoding marker, which has been frequently employed for molecular species identification. Mitochondrial genomes are small but powerful in a variety of aspects, such as eukaryote phylogeny, evolution, population genetics, etc.

Prof. Dr. Ui Wook Hwang
Guest Editor

Manuscript Submission Information

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Keywords

  • mitochondrial genome
  • eukaryote phylogeny and evolution
  • next-generation sequencing
  • gene arrangement
  • population genetics
  • DNA barcoding

Published Papers (1 paper)

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Research

Article
Comparative Analysis of Mitochondrial Genome Features among Four Clonostachys Species and Insight into Their Systematic Positions in the Order Hypocreales
Int. J. Mol. Sci. 2021, 22(11), 5530; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms22115530 - 24 May 2021
Viewed by 661
Abstract
The mycoparasite fungi of Clonostachys have contributed to the biological control of plant fungal disease and nematodes. The Clonostachys fungi strains were isolated from Ophiocordyceps highlandensis, Ophiocordycepsnigrolla and soil, which identified as Clonostachyscompactiuscula, Clonostachysrogersoniana, Clonostachyssolani and [...] Read more.
The mycoparasite fungi of Clonostachys have contributed to the biological control of plant fungal disease and nematodes. The Clonostachys fungi strains were isolated from Ophiocordyceps highlandensis, Ophiocordycepsnigrolla and soil, which identified as Clonostachyscompactiuscula, Clonostachysrogersoniana, Clonostachyssolani and Clonostachys sp. To explore the evolutionary relationship between the mentioned species, the mitochondrial genomes of four Clonostachys species were sequenced and assembled. The four mitogenomes consisted of complete circular DNA molecules, with the total sizes ranging from 27,410 bp to 42,075 bp. The GC contents, GC skews and AT skews of the mitogenomes varied considerably. Mitogenomic synteny analysis indicated that these mitogenomes underwent gene rearrangements. Among the 15 protein-coding genes within the mitogenomes, the nad4L gene exhibited the least genetic distance, demonstrating a high degree of conservation. The selection pressure analysis of these 15 PCGs were all below 1, indicating that PCGs were subject to purifying selection. Based on protein-coding gene calculation of the significantly supported topologies, the four Clonostachys species were divided into a group in the phylogenetic tree. The results supplemented the database of mitogenomes in Hypocreales order, which might be a useful research tool to conduct a phylogenetic analysis of Clonostachys. Additionally, the suitable molecular marker was significant to study phylogenetic relationships in the Bionectriaceae family. Full article
(This article belongs to the Special Issue Mitochondria Genome)
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