Complete mitochondrial genome sequence of the “copper moss” <i>Mielichhoferia elongata</i> reveals independent <i>nad7</i> gene functionality loss

Goruynov, Denis V; Goryunova, S. V.; Kuznetsova, Oxana I.; Logacheva, Maria D.; Milyutina, Irina A.; Fedorova, Alina V.; Ignatov, Michael S.; Troitsky, A. V.

doi:10.7717/peerj.4350

Cited by 16 publications

(3 citation statements)

References 48 publications

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“…Nuclear pseudogenes of mitochondrial origin are well documented among animals [ 87 ], and mitochondrial pseudogenes kept in the mitochondrion have been discovered among various animals too [ 88 , 89 , 90 , 91 , 92 , 93 , 94 ]. In plants and algae, there are very few records of pseudogenes in mitochondria [ 95 , 96 , 97 , 98 , 99 ]. Regarding the fusion of genes inside single ORFs, the one concerning cox3 and rps13 is the most disturbing.…”

Section: Discussionmentioning

confidence: 99%

Haslea silbo, A Novel Cosmopolitan Species of Blue Diatoms

Gastineau

Hansen

Poulin

et al. 2021

Biology

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Specimens of a new species of blue diatoms from the genus Haslea Simonsen were discovered in geographically distant sampling sites, first in the Canary Archipelago, then North Carolina, Gulf of Naples, the Croatian South Adriatic Sea, and Turkish coast of the Eastern Mediterranean Sea. An exhaustive characterization of these specimens, using a combined morphological and genomic approach led to the conclusion that they belong to a single new to science cosmopolitan species, Haslea silbo sp. nov. A preliminary characterization of its blue pigment shows similarities to marennine produced by Haslea ostrearia, as evidenced by UV–visible spectrophotometry and Raman spectrometry. Life cycle stages including auxosporulation were also observed, providing data on the cardinal points of this species. For the two most geographically distant populations (North Carolina and East Mediterranean), complete mitochondrial and plastid genomes were sequenced. The mitogenomes of both strains share a rare atp6 pseudogene, but the number, nature, and positions of the group II introns inside its cox1 gene differ between the two populations. There are also two pairs of genes fused in single ORFs. The plastid genomes are characterized by large regions of recombination with plasmid DNA, which are in both cases located between the ycf35 and psbA genes, but whose content differs between the strains. The two sequenced strains hosts three plasmids coding for putative serine recombinase protein whose sequences are compared, and four out of six of these plasmids were highly conserved.

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Section: Discussionmentioning

confidence: 99%

Haslea silbo, A Novel Cosmopolitan Species of Blue Diatoms

Gastineau

Hansen

Poulin

et al. 2021

Biology

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“…However, metal tolerance is species-dependent and, indeed, some mosses, such as Mielichhoferia elongata, need metal-rich substrates for proper development [14]. Another example is the copper moss Scopelophila cataractae, an obligated metallophyte.…”

Section: Introductionmentioning

confidence: 99%

Is a Combination of Metals More Toxic to Mosses Than a Single Metal?

Schillaci,

Djakovic,

Lang

2023

Plants

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Increasing pollution in the environment calls for the precise determination of metal toxicity in plants as they are at the base of the food chain. Mosses are often employed as biomonitors and provide good models for testing metal adsorption. However, species may react differently and many studies only look at one metal at a time, even though toxicity levels are affected by metal combinations. In this study, the effects of CuCl2, MnCl2, FeCl2, and Sb-acetate were examined individually and in combinations on the moss species Pohlia drummondii and Physcomitrium patens. In general, the two species reacted differently to the presence of trace metals; although, for both, the tolerance limit was at 100 µM. Overall, individual metals were less toxic than combinations, with some exceptions for Fe and Mn in P. patens. Additionally, we demonstrate that multiple combinations of metals are especially toxic if Cu is present.

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“…Plant mitochondrial genomes are amazingly diverse and complex (Mower et al 2012). Land plant mitochondrial genomes range in size from 100 kilobases (kbp) for mosses such as Mielichhoferia elongata (Goruynov et al 2018) to more than 11 megabases (Mbp) in the case of the flowering plant Silene conica (Sloan et al 2012). Although their genome structure is often portrayed as a circle, the true physical structure of their genome appears to be a variety of circles, linear molecules, and complex branching structures (Backert et al 1997;Backert & Börner 2000).…”

Section: Introductionmentioning

confidence: 99%

Largest Complete Mitochondrial Genome of a Gymnosperm, Sitka Spruce (Picea sitchensis), Indicates Complex Physical Structure

Jackman¹,

Coombe²,

Warren³

et al. 2019

Preprint

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Plant mitochondrial genomes vary widely in size. Although many plant mitochondrial genomes have been sequenced and assembled, the vast majority are of angiosperms, and few are of gymnosperms. Most plant mitochondrial genomes are smaller than a megabase, with a few notable exceptions. We have sequenced and assembled the 5.5 Mbp mitochondrial genome of Sitka spruce (Picea sitchensis), the largest complete mitochondrial genome of a gymnosperm. We sequenced the whole genome using Oxford Nanopore MinION, and then identified contigs of mitochondrial origin assembled from these long reads. The assembly graph shows a multipartite genome structure, composed of one smaller 168 kbp circular segment of DNA, and a larger 5.4 Mbp component with a branching structure. The assembly graph gives insight into a putative complex physical genome structure, and its branching points may represent active sites of recombination.

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Complete mitochondrial genome sequence of the “copper moss” Mielichhoferia elongata reveals independent nad7 gene functionality loss

Cited by 16 publications

References 48 publications

Haslea silbo, A Novel Cosmopolitan Species of Blue Diatoms

Haslea silbo, A Novel Cosmopolitan Species of Blue Diatoms

Is a Combination of Metals More Toxic to Mosses Than a Single Metal?

Largest Complete Mitochondrial Genome of a Gymnosperm, Sitka Spruce (Picea sitchensis), Indicates Complex Physical Structure

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