Mobile elements shape plastome evolution in ferns

Tanner A. Robison, Amanda L Grusz, Paul G. Wolf, Jeffrey P. Mower, Blake D. Fauskee, Karla Sosa, Eric Schuettpelz

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Plastid genomes display remarkable organizational stability over evolutionary time. From green algae to angiosperms, most plastid genomes are largely collinear, with only a few cases of inversion, gene loss, or, in extremely rare cases, gene addition. These plastome insertions are mostly clade-specific and are typically of nuclear or mitochondrial origin. Here, we expand on these findings and present the first family-level survey of plastome evolution in ferns, revealing a novel suite of dynamic mobile elements. Comparative plastome analyses of the Pteridaceae expose several mobile open reading frames that vary in sequence length, insertion site, and configuration among sampled taxa. Even between close relatives, the presence and location of these elements is widely variable when viewed in a phylogenetic context.We characterize these elements and refer to them collectively as Mobile Open Reading Frames in Fern Organelles (MORFFO). We further note that the presence of MORFFO is not restricted to Pteridaceae, but is found across ferns and other plant clades. MORFFO elements are regularly associated with inversions, intergenic expansions, and changes to the inverted repeats. They likewise appear to be present in mitochondrial and nuclear genomes of ferns, indicating that they can move between genomic compartments with relative ease. The origins and functions of these mobile elements are unknown, but MORFFO appears to be a major driver of structural genome evolution in the plastomes of ferns, and possibly other groups of plants.

Original languageEnglish (US)
Pages (from-to)2558-2571
Number of pages14
JournalGenome biology and evolution
Volume10
Issue number10
DOIs
StatePublished - Oct 1 2018

Fingerprint

Ferns
fern
ferns and fern allies
Open Reading Frames
open reading frames
Organelles
Pteridaceae
organelles
genome
Plastid Genomes
plastid
Angiosperms
Chlorophyta
Mitochondrial Genome
gene
Insertional Mutagenesis
green alga
angiosperm
nuclear genome
Genes

Keywords

  • Fern
  • Horizontal gene transfer
  • Inversion
  • Organelle
  • Pteridaceae.

Cite this

Robison, T. A., Grusz, A. L., Wolf, P. G., Mower, J. P., Fauskee, B. D., Sosa, K., & Schuettpelz, E. (2018). Mobile elements shape plastome evolution in ferns. Genome biology and evolution, 10(10), 2558-2571. https://doi.org/10.1093/gbe/evy189

Mobile elements shape plastome evolution in ferns. / Robison, Tanner A.; Grusz, Amanda L; Wolf, Paul G.; Mower, Jeffrey P.; Fauskee, Blake D.; Sosa, Karla; Schuettpelz, Eric.

In: Genome biology and evolution, Vol. 10, No. 10, 01.10.2018, p. 2558-2571.

Research output: Contribution to journalArticle

Robison, TA, Grusz, AL, Wolf, PG, Mower, JP, Fauskee, BD, Sosa, K & Schuettpelz, E 2018, 'Mobile elements shape plastome evolution in ferns', Genome biology and evolution, vol. 10, no. 10, pp. 2558-2571. https://doi.org/10.1093/gbe/evy189
Robison TA, Grusz AL, Wolf PG, Mower JP, Fauskee BD, Sosa K et al. Mobile elements shape plastome evolution in ferns. Genome biology and evolution. 2018 Oct 1;10(10):2558-2571. https://doi.org/10.1093/gbe/evy189
Robison, Tanner A. ; Grusz, Amanda L ; Wolf, Paul G. ; Mower, Jeffrey P. ; Fauskee, Blake D. ; Sosa, Karla ; Schuettpelz, Eric. / Mobile elements shape plastome evolution in ferns. In: Genome biology and evolution. 2018 ; Vol. 10, No. 10. pp. 2558-2571.
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