One thousand plant transcriptomes and the phylogenomics of green plants.
Abstract
Green plants (Viridiplantae) include around 450,000-500,000 species1,2 of great diversity
and have important roles in terrestrial and aquatic ecosystems. Here, as part of the
One Thousand Plant Transcriptomes Initiative, we sequenced the vegetative transcriptomes
of 1,124 species that span the diversity of plants in a broad sense (Archaeplastida),
including green plants (Viridiplantae), glaucophytes (Glaucophyta) and red algae (Rhodophyta).
Our analysis provides a robust phylogenomic framework for examining the evolution
of green plants. Most inferred species relationships are well supported across multiple
species tree and supermatrix analyses, but discordance among plastid and nuclear gene
trees at a few important nodes highlights the complexity of plant genome evolution,
including polyploidy, periods of rapid speciation, and extinction. Incomplete sorting
of ancestral variation, polyploidization and massive expansions of gene families punctuate
the evolutionary history of green plants. Notably, we find that large expansions of
gene families preceded the origins of green plants, land plants and vascular plants,
whereas whole-genome duplications are inferred to have occurred repeatedly throughout
the evolution of flowering plants and ferns. The increasing availability of high-quality
plant genome sequences and advances in functional genomics are enabling research on
genome evolution across the green tree of life.
Type
Journal articleSubject
One Thousand Plant Transcriptomes InitiativeEvolution, Molecular
Phylogeny
Genome, Plant
Databases, Genetic
Biological Evolution
Viridiplantae
Transcriptome
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https://hdl.handle.net/10161/21768Published Version (Please cite this version)
10.1038/s41586-019-1693-2Publication Info
One Thousand Plant Transcriptomes Initiative (2019). One thousand plant transcriptomes and the phylogenomics of green plants. Nature, 574(7780). pp. 679-685. 10.1038/s41586-019-1693-2. Retrieved from https://hdl.handle.net/10161/21768.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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