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Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution.

ABSTRACT: The filamentous and unicellular algae of the class Zygnematophyceae are the closest algal relatives of land plants. Inferring the properties of the last common ancestor shared by these algae and land plants allows us to identify decisive traits that enabled the conquest of land by plants. We sequenced four genomes of filamentous Zygnematophyceae (three strains of Zygnema circumcarinatum and one strain of Z. cylindricum) and generated chromosome-scale assemblies for all strains of the emerging model system Z. circumcarinatum. Comparative genomic analyses reveal expanded genes for signaling cascades, environmental response, and intracellular trafficking that we associate with multicellularity. Gene family analyses suggest that Zygnematophyceae share all the major enzymes with land plants for cell wall polysaccharide synthesis, degradation, and modifications; most of the enzymes for cell wall innovations, especially for polysaccharide backbone synthesis, were gained more than 700 million years ago. In Zygnematophyceae, these enzyme families expanded, forming co-expressed modules. Transcriptomic profiling of over 19 growth conditions combined with co-expression network analyses uncover cohorts of genes that unite environmental signaling with multicellular developmental programs. Our data shed light on a molecular chassis that balances environmental response and growth modulation across more than 600 million years of streptophyte evolution.

SUBMITTER: Feng X

PROVIDER: S-EPMC9915684 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution.

Feng Xuehuan X Zheng Jinfang J Irisarri Iker I Yu Huihui H Zheng Bo B Ali Zahin Z de Vries Sophie S Keller Jean J Fürst-Jansen Janine M R JMR Dadras Armin A Zegers Jaccoline M S JMS Rieseberg Tim P TP Ashok Amra Dhabalia AD Darienko Tatyana T Bierenbroodspot Maaike J MJ Gramzow Lydia L Petroll Romy R Haas Fabian B FB Fernandez-Pozo Noe N Nousias Orestis O Li Tang T Fitzek Elisabeth E Grayburn W Scott WS Rittmeier Nina N Permann Charlotte C Rümpler Florian F Archibald John M JM Theißen Günter G Mower Jeffrey P JP Lorenz Maike M Buschmann Henrik H von Schwartzenberg Klaus K Boston Lori L Hayes Richard D RD Daum Chris C Barry Kerrie K Grigoriev Igor V IV Wang Xiyin X Li Fay-Wei FW Rensing Stefan A SA Ari Julius Ben JB Keren Noa N Mosquna Assaf A Holzinger Andreas A Delaux Pierre-Marc PM Zhang Chi C Huang Jinling J Mutwil Marek M de Vries Jan J Yin Yanbin Y

bioRxiv : the preprint server for biology 20230201

The filamentous and unicellular algae of the class Zygnematophyceae are the closest algal relatives of land plants. Inferring the properties of the last common ancestor shared by these algae and land plants allows us to identify decisive traits that enabled the conquest of land by plants. We sequenced four genomes of filamentous Zygnematophyceae (three strains of <i>Zygnema circumcarinatum</i> and one strain of <i>Z. cylindricum</i>) and generated chromosome-scale assemblies for all strains of t ...[more]

PMID: 36778228

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Dataset Information

Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution.

Publications

Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution.

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