Updating algal evolutionary relationships through plastid genome sequencing: did alveolate plastids emerge through endosymbiosis of an ochrophyte?

Ševčíková, T.; Horák, Aleš; Klimeš, V.; Zbránková, V.; Demir-Hilton, E.; Sudek, S.; Jenkis, J.; Schmutz, J.; Přibyl, Pavel; Fousek, Jan; Vlček, Čestmír; Lang, B.F.; Oborník, Miroslav; Worden, A.Z.; Eliáš, M.

doi:https://dx.doi.org/10.1038/srep10134

Number of the records: 1

Updating algal evolutionary relationships through plastid genome sequencing: did alveolate plastids emerge through endosymbiosis of an ochrophyte?

1.

SYSNO ASEP	0451323
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Updating algal evolutionary relationships through plastid genome sequencing: did alveolate plastids emerge through endosymbiosis of an ochrophyte?
Author(s)	Ševčíková, T. (CZ) Horák, Aleš (BC-A)_{RID, ORCID} Klimeš, V. (CZ) Zbránková, V. (CZ) Demir-Hilton, E. (US) Sudek, S. (US) Jenkis, J. (US) Schmutz, J. (US) Přibyl, Pavel (BU-J)_{RID, ORCID} Fousek, Jan (UMG-J) Vlček, Čestmír (UMG-J)_RID Lang, B.F. (CA) Oborník, Miroslav (BC-A)_{RID, ORCID} Worden, A.Z. (US) Eliáš, M. (CZ)
Source Title	Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322 Roč. 5, MAY 28 2015 (2015), s. 10134
Number of pages	12 s.
Publication form	Online - E
Language	eng - English
Country	GB - United Kingdom
Keywords	phylogenetic position ; Chromera velia ; Dinoflagellate
Subject RIV	EG - Zoology
Subject RIV - cooperation	Institute of Molecular Genetics - Botanics Institute of Botany - Botanics
R&D Projects	GA13-33039S GA ČR - Czech Science Foundation (CSF)
	GPP506/12/P931 GA ČR - Czech Science Foundation (CSF)
Institutional support	BC-A - RVO:60077344 ; BU-J - RVO:67985939 ; UMG-J - RVO:68378050
UT WOS	000355544700001
DOI	10.1038/srep10134
Annotation	Algae with secondary plastids of a red algal origin, such as ochrophytes (photosynthetic stramenopiles), are diverse and ecologically important, yet their evolutionary history remains controversial. We sequenced plastid genomes of two ochrophytes, Ochromonas sp. CCMP1393 (Chrysophyceae) and Trachydiscus minutus (Eustigmatophyceae). A shared split of the clpC gene as well as phylogenomic analyses of concatenated protein sequences demonstrated that chrysophytes and eustigmatophytes form a clade, the Limnista, exhibiting an unexpectedly elevated rate of plastid gene evolution. Our analyses also indicate that the root of the ochrophyte phylogeny falls between the recently redefined Khakista and Phaeista assemblages. Taking advantage of the expanded sampling of plastid genome sequences, we revisited the phylogenetic position of the plastid of Vitrella brassicaformis, a member of Alveolata with the least derived plastid genome known for the whole group. The results varied depending on the dataset and phylogenetic method employed, but suggested that the Vitrella plastids emerged from a deep ochrophyte lineage rather than being derived vertically from a hypothetical plastid-bearing common ancestor of alveolates and stramenopiles. Thus, we hypothesize that the plastid in Vitrella, and potentially in other alveolates, may have been acquired by an endosymbiosis of an early ochrophyte.
Workplace	Biology Centre (since 2006)
Contact	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Year of Publishing	2016

Number of the records: 1