Unravelling the hidden complexity in diversity and pigment composition of a colonial flagellate Synura sphagnicola (Chrysophyceae, Stramenopiles)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F23%3A00578515" target="_blank" >RIV/61388971:_____/23:00578515 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/23:10475066
Result on the web
<a href="https://fottea.czechphycology.cz/pdfs/fot/2023/02/01.pdf" target="_blank" >https://fottea.czechphycology.cz/pdfs/fot/2023/02/01.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5507/fot.2022.021" target="_blank" >10.5507/fot.2022.021</a>

Result language
angličtina
Original language name
Unravelling the hidden complexity in diversity and pigment composition of a colonial flagellate Synura sphagnicola (Chrysophyceae, Stramenopiles)
Original language description
In this study, we aim to taxonomically evaluate a unique example of cryptic diversity in a freshwater protist species Synura sphagnicola, occurring at two evolutionary levels. First, we characterize two species, S. sphagnicola and S. rubra sp. nov., that diverged from one another approx. 14 Mya. These species are morpho-logically well differentiated by the morphology of silica scales. Second, we propose seven evolutionary young, but ecologically and geographically well differentiated lineages as separate sub-species, sphagnicola, agilis, borealis (within S. sphagnicola), rubra, ampla, bella and caelica (within S. rubra). In addition, we examine the autofluorescence and pigment composition of two selected strains, identifying fucoxanthin as a predominant carotenoid. We further show that the red droplets in the cytoplasm, a prominent feature of both species, are formed by a previously unknown pigment. Finally, we identify chlorophyll-c2 in S. sphagnicola. Since the lack of this pigment represents a major distinguishing character to discriminate between classes Synurophyceae and Chrysophyceae, we formally synonymize these taxa.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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