The hornwort genome and early land plant evolution
Hornworts, liverworts and mosses are three early diverging clades of land plants, and together comprise the bryophytes. Here, we report the draft genome sequence of the hornwort Anthoceros angustus . Phylogenomic inferences confirm the monophyly of bryophytes, with hornworts sister to liverworts and...
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Published in | Nature plants Vol. 6; no. 2; pp. 107 - 118 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
01.02.2020
Nature Publishing Group |
Subjects | |
Online Access | Get full text |
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Summary: | Hornworts, liverworts and mosses are three early diverging clades of land plants, and together comprise the bryophytes. Here, we report the draft genome sequence of the hornwort
Anthoceros angustus
. Phylogenomic inferences confirm the monophyly of bryophytes, with hornworts sister to liverworts and mosses. The simple morphology of hornworts correlates with low genetic redundancy in plant body plan, while the basic transcriptional regulation toolkit for plant development has already been established in this early land plant lineage. Although the
Anthoceros
genome is small and characterized by minimal redundancy, expansions are observed in gene families related to RNA editing, UV protection and desiccation tolerance. The genome of
A. angustus
bears the signatures of horizontally transferred genes from bacteria and fungi, in particular of genes operating in stress-response and metabolic pathways. Our study provides insight into the unique features of hornworts and their molecular adaptations to live on land.
A draft genome sequence of the hornwort
Anthoceros augustus
confirms the phylogenetic relationships among the three clades of bryophytes and provides insight into the unique characteristics of hornworts and their adaptations to live on land. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2055-0278 2055-0278 |
DOI: | 10.1038/s41477-019-0588-4 |