Dataset Information

The complete mitochondrial genome of Ilyonectria sp. (Hypocreales: Hypocreomycetidae).

ABSTRACT: In the present study, we presented the complete mitochondrial genome (mitogenome) of Ilyonectria sp. The complete mitogenome of Ilypnectria sp. was composed of circular DNA molecules, with a total length of 34, 584?bp. The base composition of this mitogenome is as follows: A (35.31%), T (35.92%), G (15.93%), and C (12.83%). The mitogenome contains 18 protein-coding genes, 2 ribosomal RNA genes (rRNA), and 25 transfer RNA (tRNA) genes. The taxonomic status of the Ilyonectria sp. mitogenome exhibits a closest relationship with Ilyonectria destructans.

SUBMITTER: Yang M

PROVIDER: S-EPMC7687390 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Publications

The complete mitochondrial genome of Ilyonectria sp. (Hypocreales: Hypocreomycetidae).

Yang Mei M Li Qiang Q Chen Cheng C Huang Wenli W Liu Chengyi C

Mitochondrial DNA. Part B, Resources 20190712 2

In the present study, we presented the complete mitochondrial genome (mitogenome) of Ilyonectria sp. The complete mitogenome of Ilypnectria sp. was composed of circular DNA molecules, with a total length of 34, 584 bp. The base composition of this mitogenome is as follows: A (35.31%), T (35.92%), G (15.93%), and C (12.83%). The mitogenome contains 18 protein-coding genes, 2 ribosomal RNA genes (rRNA), and 25 transfer RNA (tRNA) genes. The taxonomic status of the Ilyonectria ...[more]

PMID: 33365556

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Project description:The fungus Pochonia chlamydosporia parasitizes nematode eggs and has become one of the most promising biological control agents (BCAs) for plant-parasitic nematodes, which are major agricultural pests that cause tremendous economic losses worldwide. The complete mitochondrial (mt) genome is expected to open new avenues for understanding the phylogenetic relationships and evolution of the invertebrate-pathogenic fungi in Hypocreales.The complete mitogenome sequence of P. chlamydosporia is 25,615 bp in size, containing the 14 typical protein-coding genes, two ribosomal RNA genes, an intronic ORF coding for a putative ribosomal protein (rps3) and a set of 23 transfer RNA genes (trn) which recognize codons for all amino acids. Sequence similarity studies and syntenic gene analyses show that 87.02% and 58.72% of P. chlamydosporia mitogenome sequences match 90.50% of Metarhizium anisopliae sequences and 61.33% of Lecanicillium muscarium sequences with 92.38% and 86.04% identities, respectively. A phylogenetic tree inferred from 14 mt proteins in Pezizomycotina fungi supports that P. chlamydosporia is most closely related to the entomopathogenic fungus M. anisopliae. The invertebrate-pathogenic fungi in Hypocreales cluster together and clearly separate from a cluster comprising plant-pathogenic fungi (Fusarium spp.) and Hypocrea jecorina. A comparison of mitogenome sizes shows that the length of the intergenic regions or the intronic regions is the major size contributor in most of mitogenomes in Sordariomycetes. Evolutionary analysis shows that rps3 is under positive selection, leading to the display of unique evolutionary characteristics in Hypocreales. Moreover, the variability of trn distribution has a clear impact on gene order in mitogenomes. Gene rearrangement analysis shows that operation of transposition drives the rearrangement events in Pezizomycotina, and most events involve in trn position changes, but no rearrangement was found in Clavicipitaceae.We present the complete annotated mitogenome sequence of P. chlamydosporia. Based on evolutionary and phylogenetic analyses, we have determined the relationships between the invertebrate-pathogenic fungi in Hypocreales. The invertebrate-pathogenic fungi in Hypocreales referred to in this paper form a monophyletic group sharing a most recent common ancestor. Our rps3 and trn gene order results also establish a foundation for further exploration of the evolutionary trajectory of the fungi in Hypocreales.

Dataset Information

The complete mitochondrial genome of Ilyonectria sp. (Hypocreales: Hypocreomycetidae).

Publications

The complete mitochondrial genome of <i>Ilyonectria</i> sp. (Hypocreales: Hypocreomycetidae).

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