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Chromosome-Scale Assembly of the Complete Genome Sequence of Leishmania (Mundinia) sp. Ghana, Isolate GH5, Strain LV757.

ABSTRACT: Leishmania (Mundinia) sp. Ghana is a kinetoplastid parasite isolated in 2015 in Ghana. We report the complete genome sequence of L. (M.) sp. Ghana, sequenced using combined short-read and long-read technologies. This will facilitate greater understanding of this novel pathogen and its relationships within the subgenus Mundinia.

SUBMITTER: Almutairi H

PROVIDER: S-EPMC8483695 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Chromosome-Scale Assembly of the Complete Genome Sequence of Leishmania (Mundinia) procaviensis Isolate 253, Strain LV425.

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Leishmania sp. Ghana 2012 LV757 strain:GH5

Project description:Leishmania (Mundinia) chancei Genome sequencing and assembly

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Chromosome-Scale Assembly of the Complete Genome Sequence of Porcisia hertigi, Isolate C119, Strain LV43.

Project description:Porcisia hertigi is a parasitic kinetoplastid first isolated from porcupines (Coendou rothschildi) in central Panama in 1965. We present the complete genome sequence of P. hertigi, isolate C119, strain LV43, sequenced using combined short- and long-read technologies. This complete genome sequence will contribute to our knowledge of the parasitic genus Porcisia.

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Comparative genomics of Leishmania (Mundinia).

Project description:BackgroundTrypanosomatids of the genus Leishmania are parasites of mammals or reptiles transmitted by bloodsucking dipterans. Many species of these flagellates cause important human diseases with clinical symptoms ranging from skin sores to life-threatening damage of visceral organs. The genus Leishmania contains four subgenera: Leishmania, Sauroleishmania, Viannia, and Mundinia. The last subgenus has been established recently and remains understudied, although Mundinia contains human-infecting species. In addition, it is interesting from the evolutionary viewpoint, representing the earliest branch within the genus and possibly with a different type of vector. Here we analyzed the genomes of L. (M.) martiniquensis, L. (M.) enriettii and L. (M.) macropodum to better understand the biology and evolution of these parasites.ResultsAll three genomes analyzed were approximately of the same size (~ 30 Mb) and similar to that of L. (Sauroleishmania) tarentolae, but smaller than those of the members of subgenera Leishmania and Viannia, or the genus Endotrypanum (~ 32 Mb). This difference was explained by domination of gene losses over gains and contractions over expansions at the Mundinia node, although only a few of these genes could be identified. The analysis predicts significant changes in the Mundinia cell surface architecture, with the most important ones relating to losses of LPG-modifying side chain galactosyltransferases and arabinosyltransferases, as well as β-amastins. Among other important changes were gene family contractions for the oxygen-sensing adenylate cyclases and FYVE zinc finger-containing proteins.ConclusionsWe suggest that adaptation of Mundinia to different vectors and hosts has led to alternative host-parasite relationships and, thereby, made some proteins redundant. Thus, the evolution of genomes in the genus Leishmania and, in particular, in the subgenus Mundinia was mainly shaped by host (or vector) switches.

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Project description:The genus Corynebacterium is best known for the pathogen C. diphtheriae; however, it contains mostly commensal and nonpathogenic, as well as several opportunistic, pathogens. Here, we present the 2.47-Mb scaffolded assembly of the type strain, Corynebacterium sp. ATCC 6931 (NCTC 1914), as deposited into GenBank under accession number CP008913.

| S-EPMC4208328 | biostudies-literature

Leishmania (Mundinia) orientalis n. sp. (Trypanosomatidae), a parasite from Thailand responsible for localised cutaneous leishmaniasis.

Project description:BackgroundLeishmaniasis is an emerging disease in Thailand with an unknown incidence or prevalence. Although the number of properly characterized and clinically confirmed cases is about 20, it is suspected that this low number masks a potentially high prevalence, with clinical disease typically manifesting itself against an immunocompromised background, but with a substantial number of subclinical or cured cases of infection. To date leishmaniasis in Thailand has been mainly ascribed to two taxa within the recently erected subgenus Mundinia Shaw, Camargo & Teixeira, 2016, Leishmania (Mundinia) martiniquensis Desbois, Pratlong & Dedet, 2014 and a species that has not been formally described prior to this study.ResultsA case of simple cutaneous leishmaniasis was diagnosed in a patient from Nan Province, Thailand. Molecular analysis of parasites derived from a biopsy sample revealed this to be a new species of Leishmania Ross, 1908, which has been named as Leishmania (Mundinia) orientalis Bates & Jariyapan n. sp. A formal description is provided, and this new taxon supercedes some isolates from the invalid taxon "Leishmania siamensis". A summary of all known cases of leishmaniasis with a corrected species identification is provided.ConclusionsThree species of parasites are now known to cause leishmaniasis is Thailand, L. martiniquensis and L. orientalis n. sp. in the subgenus Mundinia, which contains the type-species Leishmania enriettii Muniz & Medina, 1948, and a single case of Leishmania infantum Nicolle, 1908. This study now enables epidemiological and other investigations into the biology of these unusual parasites to be conducted. It is recommended that the use of the taxonomically invalid name "L. siamensis" should be discontinued.

| S-EPMC6006788 | biostudies-literature

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