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Abstract Detail



Genomics / Proteomics

Marchant, Blaine [1], Sessa, Emily Butler [2], Heo, Kweon [3], Soltis, Pamela S. [4], Soltis, Douglas E. [5].

Transcriptomic and genomic investigations of the homosporous fern, Ceratopteris richardii.

In a little more than a decade, our understanding of plant genomes has increased immensely. As a result, sequenced genomes are now available for every major green plant clade, from chlorophytic and streptophytic algae to a vast array of flowering plants - that is, every clade except the second-most biodiverse major clade of land plants and sister group to the economically significant seed plants, the monilophytes (ferns). Notorious for large genomes and numerous chromosomes (~3x more than the average angiosperm), fern genomes are unchartered despite their evolutionarily significant position as a reference group for analyzing ancestral versus derived genomic and genetic characters in the seed plants. Using transcriptomic, genomic, and fluorescent in situ hybridization techniques, we are delving into the genome of Ceratopteris richardii, a fast-growing tropical aquatic homosporous fern with a haploid genome size of 11.26 Gb and chromosome number of 39. We will present our results regarding gene specificity in the gametophytic and sporophytic life stages, gene density, and the role of polyploidy, retrotransposons, and small-scale duplications in the evolutionary genomics of this species. The outcome of this research will provide novel perspectives on the genomic dynamics and characteristics of this major clade, while also providing crucial resources for broader comparative genomic, phylogenetic, and developmental studies between ferns and seed plants, yielding new insights into the evolution of euphyllophytes as a whole.


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Related Links:
Fern Genomes Project


1 - U Florida, Biology, USA
2 - University Of Florida, Department of Biology, Box 118525, Gainesville, FL, 32611, USA
3 - Kangwon National University, Applied Plant Sciences, Chuncheon, Korea
4 - University Of Florida, Florida Museum Of Natural History, PO Box 117800, Gainesville, FL, 32611-7800, USA, 352/273-1964
5 - University of Florida, Florida Museum of Natural History, Gainesville, FL, 32611, USA

Keywords:
fern
Polyploidy
transcriptomics
genomics.

Presentation Type: Oral Paper:Papers for Topics
Session: 39
Location: Salon 19/20/The Shaw Conference Centre
Date: Tuesday, July 28th, 2015
Time: 9:15 AM
Number: 39002
Abstract ID:847
Candidate for Awards:Margaret Menzel Award


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