The selaginella genome identifies genetic changes associated with the evolution of vascular plants

Jo Ann Banks; Tomoaki Nishiyama; Mitsuyasu Hasabe; Jesper Harholt; Bent L Petersen; Iben Sørensen; Peter Ulvskov; William George Tycho Willats

doi:10.1126/science.1203810

The selaginella genome identifies genetic changes associated with the evolution of vascular plants

Jo Ann Banks, Tomoaki Nishiyama, Mitsuyasu Hasabe, Jesper Harholt, Bent L Petersen, Iben Sørensen, Peter Ulvskov, William George Tycho Willats

552 Citations (Scopus)

Abstract

Vascular plants appeared ∼410 million years ago, then diverged into several lineages of which only two survive: the euphyllophytes (ferns and seed plants) and the lycophytes. We report here the genome sequence of the lycophyte Selaginella moellendorffii (Selaginella), the first nonseed vascular plant genome reported. By comparing gene content in evolutionarily diverse taxa, we found that the transition from a gametophyte- to a sporophyte-dominated life cycle required far fewer new genes than the transition from a nonseed vascular to a flowering plant, whereas secondary metabolic genes expanded extensively and in parallel in the lycophyte and angiosperm lineages. Selaginella differs in posttranscriptional gene regulation, including small RNA regulation of repetitive elements, an absence of the trans-acting small interfering RNA pathway, and extensive RNA editing of organellar genes.

Original language	English
Journal	Science
Volume	332
Issue number	6032
Pages (from-to)	960-963
Number of pages	4
ISSN	0036-8075
DOIs	https://doi.org/10.1126/science.1203810
Publication status	Published - 20 May 2011

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title = "The selaginella genome identifies genetic changes associated with the evolution of vascular plants",

abstract = "Vascular plants appeared ∼410 million years ago, then diverged into several lineages of which only two survive: the euphyllophytes (ferns and seed plants) and the lycophytes. We report here the genome sequence of the lycophyte Selaginella moellendorffii (Selaginella), the first nonseed vascular plant genome reported. By comparing gene content in evolutionarily diverse taxa, we found that the transition from a gametophyte- to a sporophyte-dominated life cycle required far fewer new genes than the transition from a nonseed vascular to a flowering plant, whereas secondary metabolic genes expanded extensively and in parallel in the lycophyte and angiosperm lineages. Selaginella differs in posttranscriptional gene regulation, including small RNA regulation of repetitive elements, an absence of the trans-acting small interfering RNA pathway, and extensive RNA editing of organellar genes.",

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T1 - The selaginella genome identifies genetic changes associated with the evolution of vascular plants

AU - Banks, Jo Ann

AU - Nishiyama, Tomoaki

AU - Hasabe, Mitsuyasu

AU - Harholt, Jesper

AU - Petersen, Bent L

AU - Sørensen, Iben

AU - Ulvskov, Peter

AU - Willats, William George Tycho

PY - 2011/5/20

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N2 - Vascular plants appeared ∼410 million years ago, then diverged into several lineages of which only two survive: the euphyllophytes (ferns and seed plants) and the lycophytes. We report here the genome sequence of the lycophyte Selaginella moellendorffii (Selaginella), the first nonseed vascular plant genome reported. By comparing gene content in evolutionarily diverse taxa, we found that the transition from a gametophyte- to a sporophyte-dominated life cycle required far fewer new genes than the transition from a nonseed vascular to a flowering plant, whereas secondary metabolic genes expanded extensively and in parallel in the lycophyte and angiosperm lineages. Selaginella differs in posttranscriptional gene regulation, including small RNA regulation of repetitive elements, an absence of the trans-acting small interfering RNA pathway, and extensive RNA editing of organellar genes.

AB - Vascular plants appeared ∼410 million years ago, then diverged into several lineages of which only two survive: the euphyllophytes (ferns and seed plants) and the lycophytes. We report here the genome sequence of the lycophyte Selaginella moellendorffii (Selaginella), the first nonseed vascular plant genome reported. By comparing gene content in evolutionarily diverse taxa, we found that the transition from a gametophyte- to a sporophyte-dominated life cycle required far fewer new genes than the transition from a nonseed vascular to a flowering plant, whereas secondary metabolic genes expanded extensively and in parallel in the lycophyte and angiosperm lineages. Selaginella differs in posttranscriptional gene regulation, including small RNA regulation of repetitive elements, an absence of the trans-acting small interfering RNA pathway, and extensive RNA editing of organellar genes.

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DO - 10.1126/science.1203810

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The selaginella genome identifies genetic changes associated with the evolution of vascular plants

Abstract

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