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  The Penium margaritaceum Genome: Hallmarks of the Origins of Land Plants

Jiao, C., Sørensen, I., Sun, X., Sun, H., Behar, H., Alseekh, S., et al. (2020). The Penium margaritaceum Genome: Hallmarks of the Origins of Land Plants. Cell, 181(5), 1097-1111.e12. doi:10.1016/j.cell.2020.04.019.

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Genre: Journal Article

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 Creators:
Jiao, Chen1, Author
Sørensen, Iben1, Author
Sun, Xuepeng1, Author
Sun, Honghe1, Author
Behar, Hila1, Author
Alseekh, S.2, Author              
Philippe, Glenn1, Author
Palacio Lopez, Kattia1, Author
Sun, Li1, Author
Reed, Reagan1, Author
Jeon, Susan1, Author
Kiyonami, Reiko1, Author
Zhang, Sheng1, Author
Fernie, A. R.2, Author              
Brumer, Harry1, Author
Domozych, David S.1, Author
Fei, Zhangjun1, Author
Rose, Jocelyn K.C.1, Author
Affiliations:
1external, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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Free keywords: Zygnematophyceae, Penium, unicellular algae, plant evolution, terrestrial abiotic stresses, phytohormone, cell wall, flavonoids, transcriptional regulation, gene family evolution
 Abstract: Summary The evolutionary features and molecular innovations that enabled plants to first colonize land are not well understood. Here, insights are provided through our report of the genome sequence of the unicellular alga Penium margaritaceum, a member of the Zygnematophyceae, the sister lineage to land plants. The genome has a high proportion of repeat sequences that are associated with massive segmental gene duplications, likely facilitating neofunctionalization. Compared with representatives of earlier diverging algal lineages, P. margaritaceum has expanded repertoires of gene families, signaling networks, and adaptive responses that highlight the evolutionary trajectory toward terrestrialization. These encompass a broad range of physiological processes and protective cellular features, such as flavonoid compounds and large families of modifying enzymes involved in cell wall biosynthesis, assembly, and remodeling. Transcriptome profiling further elucidated adaptations, responses, and selective pressures associated with the semi-terrestrial ecosystems of P. margaritaceum, where a simple body plan would be an advantage.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published in print
 Pages: -
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Title: Cell
Source Genre: Journal
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Publ. Info: Cambridge, Mass. : Cell Press
Pages: - Volume / Issue: 181 (5) Sequence Number: - Start / End Page: 1097 - 1111.e12 Identifier: ISSN: 0092-8674
CoNE: https://pure.mpg.de/cone/journals/resource/954925463183