The Selaginella Genome Identifies Genetic Changes Associated with the Evolution of Vascular Plants
Top Cited Papers
- 20 May 2011
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 332 (6032), 960-963
- https://doi.org/10.1126/science.1203810
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.Keywords
Funding Information
- U.S. Department of Agriculture (DE-FG02-08ER64630, NRI 2007-35318-18389)
- National Institutes of Health (GM84051, T32 GM007757, T32-HG00035, GM065383)
- National Human Genome Research Institute (HG004164, HG004164)
- National Science Foundation (844413, 515435, 519970, 638595, 922742, 1020443, 607123, 744800, 1020660, 1036466, 735191, 228660, 421604)
- U.S. Department of Energy (DE?AC02?05CH11231, DE-FG02-04ER15542)
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