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Abstract Detail


Robison, Tanner [1], Grusz, Amanda [2], Wolf, Paul [3], Mower, Jeff [4], Sosa, Karla [5], Fauskee, Blake [6], McKain, Michael [7], Schuettpelz, Eric [8].

Mobile elements may be shaping plastome evolution in ferns.

Genomic events, such as inversions, endosymbiotic gene transfer, and intergenic expansion are often useful markers for resolving phylogenetic relationships. In this study we look in detail at plastomes of the fern family Pteridaceae, and broadly across all ferns to gain further insight into these genomic events. Comparing ancient and more recent inversion events we find a specific family of highly mobile open reading frames that are tightly associated with these events. We name these elements MORFFO (Mobile Open Reading Frames in Fern Organelles). We find that these elements are often associated with intergenic expansion and inverted repeat expansion. The origin and precise functional mechanisms related to these elements remain unknown, but they represent a major driver of structural genome evolution in the plastomes of ferns, and maybe other groups of green plants.

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1 - Utah State Univsersity, Biology, 5201 Old Main Hill, Logan, Utah, 84321, United States
2 - University of Minnesota Duluth, Biology, 1035 Kirby Drive, Duluth, MN , 55812, USA
3 - Utah State University, Department of Biology, 5305 Old Main Hill, Logan, UT, 84322, USA
4 - 1844 Kings Hwy, Beadle Center E128, Lincoln, NE, 68502, United States
5 - Duke University, Biology, 125 Science Dr, Durham, NC, 27708, USA
6 - University of Minnesota Duluth, 1035 Kirby Drive, Duluth, MN, 55812, United States
7 - The University of Alabama, Biological Sciences, 300 Hackberry Lane, Tuscaloosa, Alabama, 35487, United States
8 - Smithsonian Institution, Department Of Botany, MRC 166 PO Box 37012, Washington, DC, 20013, United States

Mobile Element

Presentation Type: Oral Paper
Session: 15, Pteridology II
Location: 108/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 4:15 PM
Number: 15003
Abstract ID:345
Candidate for Awards:Edgar T. Wherry award

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