Document Type
Article
Publication Date
8-15-2024
Department 1
Biology
Abstract
Green algae usually assigned to the genus Oophila are known to colonize egg capsules of amphibian egg masses across the Nearctic and Palearctic regions. We study the phylogenetic relationships of these algae using a phylotranscriptomic data set of 76 protein-coding single-copy nuclear genes. Our data set includes novel RNAseq data for six amphibian-associated and five free-living green algae, and draft genomes of two of the latter. Within the Oophila clade (nested within Moewusinia), we find samples from two European frogs (Rana dalmatina and R. temporaria) closely related to those of the North American frog R. aurora (Oophila subclade III). An isolate from the North American R. sylvatica (subclade IV) appears to be sister to the Japanese isolate from the salamander Hynobius nigrescens (subclade J1), and subclade I algae from Ambystoma maculatum are sister to all other lineages in the Oophila clade. Two free-living algae (Chlamydomonas nasuta and Cd. pseudogloeogama) are nested within the Oophila clade, and a strain of the type species of Chlorococcum (Cc. infusionum) is related to this assemblage. Our phylotranscriptomic tree suggests that recognition of different species within the Oophila clade (“clade B” of earlier studies) is warranted, and calls for a comprehensive taxonomic revision of Moewusinia.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
DOI
10.1016/j.ympev.2024.108165
ISBN/ISSN
1095-9513
Version
Version of Record
Recommended Citation
Kerney R, Vences M, Sachs M, et al. 2024. Phylotranscriptomic relationships of the Oophila clade of green algae associated to amphibian egg masses. Molecular Phylogenetics and Evolution 200 (Nov 2024).