Fottea 2023, 23(2):217-222 | DOI: 10.5507/fot.2023.006

Elucidating the phylogeny and taxonomic position of the genus Spiniferomonas Takahashi (Chrysophyceae)

Martin Pusztai1, 2, 3*, Iva Jadrná1, Pavel Škaloud1
1 Department of Botany, Faculty of Science, Charles University, Benátská 2, CZ-12800 Prague, Czech Republic
2 Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, CZ-46117 Liberec, Czech Republic
3 Faculty of Science, Humanities and Education, Technical University of Liberec, Studentská 1402/2, CZ-46117 Liberec, Czech Republic; *Corresponding author e-mail: martin.pusztai@tul.cz

Spiniferomonas represents a strictly single-celled plastid-bearing genus of silica-scaled chrysophytes, with a well-characterised morphology and ultrastructure, as well as a pretty known ecology based on scale records. However, the taxonomic status of this genus remains ambiguous due to the absence of relevant sequence data. Spiniferomonas has historically been classified in the Synurales, Paraphysomonadales, or "Chrysosphaerellaceae" based upon interpretations of the silica scale morphology. In this study, we have aimed to genetically characterize a newly established Spiniferomonas trioralis culture as well as culture of unicellular Chrysosphaerella coronacircumspina to elucidate the taxonomy of Spiniferomonas and to resolve the relationship between the two genera. Using SSU rDNA and rbcL concatenated sequences, we show that Spiniferomonas and Chrysosphaerella are sister taxa in a well-supported monophyletic lineage of silica-scaled chrysophytes within the order Chromulinales.

Keywords: Chromulinales, Chrysophyceae, Chrysosphaerella coronacircumspina, silica-scaled chrysophytes, Spiniferomonas trioralis, rbcL, SSU rDNA, taxonomy

Received: October 4, 2022; Revised: December 21, 2022; Accepted: February 3, 2023; Prepublished online: August 2, 2023; Published: October 25, 2023  Show citation

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Pusztai, M., Jadrná, I., & Škaloud, P. (2023). Elucidating the phylogeny and taxonomic position of the genus Spiniferomonas Takahashi (Chrysophyceae) . Fottea, 23(2), 217-222. doi: 10.5507/fot.2023.006
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