Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi

Abstract The zoosporic obligate endoparasites, Olpidium, hold a pivotal position to the reconstruction of the flagellum loss in fungi, one of the key morphological transitions associated with the colonization of land by the early fungi. We generated genome and transcriptome data from non-axenic zoos...

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Autores principales:	Ying Chang, D’Ann Rochon, Satoshi Sekimoto, Yan Wang, Mansi Chovatia, Laura Sandor, Asaf Salamov, Igor V. Grigoriev, Jason E. Stajich, Joseph W. Spatafora
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/43da8aae83df4773810b0787d298573f
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spelling	oai:doaj.org-article:43da8aae83df4773810b0787d298573f2021-12-02T14:06:57ZGenome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi10.1038/s41598-021-82607-42045-2322https://doaj.org/article/43da8aae83df4773810b0787d298573f2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82607-4https://doaj.org/toc/2045-2322Abstract The zoosporic obligate endoparasites, Olpidium, hold a pivotal position to the reconstruction of the flagellum loss in fungi, one of the key morphological transitions associated with the colonization of land by the early fungi. We generated genome and transcriptome data from non-axenic zoospores of Olpidium bornovanus and used a metagenome approach to extract phylogenetically informative fungal markers. Our phylogenetic reconstruction strongly supported Olpidium as the closest zoosporic relative of the non-flagellated terrestrial fungi. Super-alignment analyses resolved Olpidium as sister to the non-flagellated terrestrial fungi, whereas a super-tree approach recovered different placements of Olpidium, but without strong support. Further investigations detected little conflicting signal among the sampled markers but revealed a potential polytomy in early fungal evolution associated with the branching order among Olpidium, Zoopagomycota and Mucoromycota. The branches defining the evolutionary relationships of these lineages were characterized by short branch lengths and low phylogenetic content and received equivocal support for alternative phylogenetic hypotheses from individual markers. These nodes were marked by important morphological innovations, including the transition to hyphal growth and the loss of flagellum, which enabled early fungi to explore new niches and resulted in rapid and temporally concurrent Precambrian diversifications of the ancestors of several phyla of fungi.Ying ChangD’Ann RochonSatoshi SekimotoYan WangMansi ChovatiaLaura SandorAsaf SalamovIgor V. GrigorievJason E. StajichJoseph W. SpataforaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ying Chang D’Ann Rochon Satoshi Sekimoto Yan Wang Mansi Chovatia Laura Sandor Asaf Salamov Igor V. Grigoriev Jason E. Stajich Joseph W. Spatafora Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
description	Abstract The zoosporic obligate endoparasites, Olpidium, hold a pivotal position to the reconstruction of the flagellum loss in fungi, one of the key morphological transitions associated with the colonization of land by the early fungi. We generated genome and transcriptome data from non-axenic zoospores of Olpidium bornovanus and used a metagenome approach to extract phylogenetically informative fungal markers. Our phylogenetic reconstruction strongly supported Olpidium as the closest zoosporic relative of the non-flagellated terrestrial fungi. Super-alignment analyses resolved Olpidium as sister to the non-flagellated terrestrial fungi, whereas a super-tree approach recovered different placements of Olpidium, but without strong support. Further investigations detected little conflicting signal among the sampled markers but revealed a potential polytomy in early fungal evolution associated with the branching order among Olpidium, Zoopagomycota and Mucoromycota. The branches defining the evolutionary relationships of these lineages were characterized by short branch lengths and low phylogenetic content and received equivocal support for alternative phylogenetic hypotheses from individual markers. These nodes were marked by important morphological innovations, including the transition to hyphal growth and the loss of flagellum, which enabled early fungi to explore new niches and resulted in rapid and temporally concurrent Precambrian diversifications of the ancestors of several phyla of fungi.
format	article
author	Ying Chang D’Ann Rochon Satoshi Sekimoto Yan Wang Mansi Chovatia Laura Sandor Asaf Salamov Igor V. Grigoriev Jason E. Stajich Joseph W. Spatafora
author_facet	Ying Chang D’Ann Rochon Satoshi Sekimoto Yan Wang Mansi Chovatia Laura Sandor Asaf Salamov Igor V. Grigoriev Jason E. Stajich Joseph W. Spatafora
author_sort	Ying Chang
title	Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
title_short	Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
title_full	Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
title_fullStr	Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
title_full_unstemmed	Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
title_sort	genome-scale phylogenetic analyses confirm olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/43da8aae83df4773810b0787d298573f
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Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi

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