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Delineating closely related dinoflagellate lineages using phylotranscriptomics
- Source :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2018
- Publisher :
- Phycological Society of America, 2018.
-
Abstract
- 6 pages, 2 figures, supporting information https://doi.org/10.1111/jpy.12748<br />Recently radiated dinoflagellates Apocalathium aciculiferum (collected in Lake Erken, Sweden), Apocalathium malmogiense (Baltic Sea) and Apocalathium aff. malmogiense (Highway Lake, Antarctica) represent a lineage with an unresolved phylogeny. We determined their phylogenetic relationships using phylotranscriptomics based on 792 amino acid sequences. Our results showed that A. aciculiferum diverged from the other two closely related lineages, consistent with their different morphologies in cell size, relative cell length and presence of spines. We hypothesized that A. aff. malmogiense and A. malmogiense, which inhabit different hemispheres, are evolutionarily more closely related because they diverged from a marine common ancestor, adapting to a wide salinity range, while A. aciculiferum colonized a freshwater habitat, by acquiring adaptations to this environment, in particular, salinity intolerance. We show that phylotranscriptomics can resolve the phylogeny of recently diverged protists. This has broad relevance, given that many phytoplankton species are morphologically very similar, and single genes sometimes lack the information to determine species’ relationships<br />The work was supported through the Russian Foundation for Basic Research (project # 16-04-01704) to NA and a Swedish Research Council grant (2012-10-24) to KR as well as the marine microbial eukaryote transcriptome sequencing project (MMETSP) of the Gordon and Betty Moore Foundation
- Subjects :
- 0301 basic medicine
Range (biology)
Lineage (evolution)
Cytochrome b
ITS2
COB
Plant Science
Aquatic Science
Transcriptomes
03 medical and health sciences
Phylogenetics
Phylogenomics
Adaptive radiation
Microalgae
Phylogeny
BS
biology
Phylogenetic tree
fungi
ta1183
High Throughput Sequencing
Dinoflagellate
Protists
Internal transcribed spacer-2
RNA, Algal
biology.organism_classification
030104 developmental biology
RNA, Ribosomal
Evolutionary biology
Dinoflagellida
ta1181
Transcriptome
RNA, Protozoan
Bootstrap support
Subjects
Details
- ISSN :
- 15298817 and 00223646
- Database :
- OpenAIRE
- Journal :
- Journal of Phycology
- Accession number :
- edsair.doi.dedup.....a7f84cade1e21901b547a3f045a0dc15