Universität zu Köln

Hess, Sebastian, Williams, Shelby K., Busch, Anna, Irisarri, Iker ORCID: 0000-0002-3628-1137, Delwiche, Charles F., de Vries, Sophie ORCID: 0000-0002-5267-8935, Darienko, Tatyana, Roger, Andrew J., Archibald, John M., Buschmann, Henrik ORCID: 0000-0003-3022-6150, von Schwartzenberg, Klaus and de Vries, Jan ORCID: 0000-0003-3507-5195 (2022). A phylogenomically informed five-order system for the closest relatives of land plants. Curr. Biol., 32 (20). S. 4473 - 4491. CAMBRIDGE: CELL PRESS. ISSN 1879-0445

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Abstract

The evolution of streptophytes had a profound impact on life on Earth. They brought forth those photosyn-thetic eukaryotes that today dominate the macroscopic flora: the land plants (Embryophyta).1 There is convincing evidence that the unicellular/filamentous Zygnematophyceae-and not the morphologically more elaborate Coleochaetophyceae or Charophyceae-are the closest algal relatives of land plants.2-6 Despite the species richness (>4,000), wide distribution, and key evolutionary position of the zygnemato-phytes, their internal phylogeny remains largely unresolved.7,8 There are also putative zygnematophytes with interesting body plan modifications (e.g., filamentous growth) whose phylogenetic affiliations remain un-known. Here, we studied a filamentous green alga (strain MZCH580) from an Austrian peat bog with central or parietal chloroplasts that lack discernible pyrenoids. It represents Mougeotiopsis calospora PALLA, an enig-matic alga that was described more than 120 years ago9 but never subjected to molecular analyses. We generated transcriptomic data of M. calospora strain MZCH580 and conducted comprehensive phyloge-nomic analyses (326 nuclear loci) for 46 taxonomically diverse zygnematophytes. Strain MZCH580 falls in a deep-branching zygnematophycean clade together with some unicellular species and thus represents a formerly unknown zygnematophycean lineage with filamentous growth. Our well-supported phylogenomic tree lets us propose a new five-order system for the Zygnematophyceae and provides evidence for at least five independent origins of true filamentous growth in the closest algal relatives of land plants. This phylogeny provides a robust and comprehensive framework for performing comparative analyses and inferring the evo-lution of cellular traits and body plans in the closest relatives of land plants.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hess, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED Williams, Shelby K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Busch, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Irisarri, Iker UNSPECIFIED orcid.org/0000-0002-3628-1137 UNSPECIFIED Delwiche, Charles F. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Vries, Sophie UNSPECIFIED orcid.org/0000-0002-5267-8935 UNSPECIFIED Darienko, Tatyana UNSPECIFIED UNSPECIFIED UNSPECIFIED Roger, Andrew J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Archibald, John M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Buschmann, Henrik UNSPECIFIED orcid.org/0000-0003-3022-6150 UNSPECIFIED von Schwartzenberg, Klaus UNSPECIFIED UNSPECIFIED UNSPECIFIED de Vries, Jan UNSPECIFIED orcid.org/0000-0003-3507-5195 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-686969
DOI:	10.1016/j.cub.2022.08.022
Journal or Publication Title:	Curr. Biol.
Volume:	32
Number:	20
Page Range:	S. 4473 - 4491
Date:	2022
Publisher:	CELL PRESS
Place of Publication:	CAMBRIDGE
ISSN:	1879-0445
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ZYGOGONIUM-ERICETORUM ZYGNEMATOPHYCEAE; CELL-DIVISION; MOLECULAR PHYLOGENY; STREPTOPHYTE ALGAE; SSU RDNA; EVOLUTION; SEQUENCE; GENOME; TERRESTRIAL; PERFORMANCE Multiple languages Biochemistry & Molecular Biology; Biology; Cell Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68696