Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs
Culturing protists offers a powerful approach to exploring eukaryotic diversity, especially for deep-branching lineages. In this study, we cultured and described a novel protist species, named Glissandra oviformis n sp. within the poorly studied and unclassified genus Glissandra. While an SSU rDNA g...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Royal Society
2025-06-01
|
| Series: | Open Biology |
| Subjects: | |
| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsob.250057 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850131634646417408 |
|---|---|
| author | Euki Yazaki Ryo Harada Ryu Isogai Kohei Bamba Ken-ichiro Ishida Yuji Inagaki Takashi Shiratori |
| author_facet | Euki Yazaki Ryo Harada Ryu Isogai Kohei Bamba Ken-ichiro Ishida Yuji Inagaki Takashi Shiratori |
| author_sort | Euki Yazaki |
| collection | DOAJ |
| description | Culturing protists offers a powerful approach to exploring eukaryotic diversity, especially for deep-branching lineages. In this study, we cultured and described a novel protist species, named Glissandra oviformis n sp. within the poorly studied and unclassified genus Glissandra. While an SSU rDNA gene phylogeny failed to resolve its phylogenetic placement in the eukaryotic tree, a phylogenomic analysis of 340 proteins indicated G. oviformis as a member of the CRuMs clade. Prior to this study, this clade consisted of diverse heterotrophic amoeba and flagellates, and lacked clear synapomorphies. Ultrastructural observations revealed that G. oviformis shares the characteristics with some CRuMs members, including the pellicle underlying the plasma membrane and an internal sleeve surrounding the central pair of the axoneme at the flagellar transitional region. Our findings suggest potential shared characteristics and synapomorphies for CRuMs and contribute to a deeper understanding of the character evolution within this clade. |
| format | Article |
| id | doaj-art-a2a3bf93524c435aa18cc5eca344396c |
| institution | OA Journals |
| issn | 2046-2441 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Open Biology |
| spelling | doaj-art-a2a3bf93524c435aa18cc5eca344396c2025-08-20T02:32:22ZengThe Royal SocietyOpen Biology2046-24412025-06-0115610.1098/rsob.250057Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMsEuki Yazaki0Ryo Harada1Ryu Isogai2Kohei Bamba3Ken-ichiro Ishida4Yuji Inagaki5Takashi Shiratori6National Agriculture and Food Research Organization Advanced Analysis Center, Tsukuba, Ibaraki Prefecture, JapanDepartment of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, CanadaGraduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki Prefecture, JapanGraduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki Prefecture, JapanInstitute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki Prefecture, JapanCenter for Computational Sciences, University of Tsukuba, Tsukuba, Ibaraki Prefecture, JapanInstitute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki Prefecture, JapanCulturing protists offers a powerful approach to exploring eukaryotic diversity, especially for deep-branching lineages. In this study, we cultured and described a novel protist species, named Glissandra oviformis n sp. within the poorly studied and unclassified genus Glissandra. While an SSU rDNA gene phylogeny failed to resolve its phylogenetic placement in the eukaryotic tree, a phylogenomic analysis of 340 proteins indicated G. oviformis as a member of the CRuMs clade. Prior to this study, this clade consisted of diverse heterotrophic amoeba and flagellates, and lacked clear synapomorphies. Ultrastructural observations revealed that G. oviformis shares the characteristics with some CRuMs members, including the pellicle underlying the plasma membrane and an internal sleeve surrounding the central pair of the axoneme at the flagellar transitional region. Our findings suggest potential shared characteristics and synapomorphies for CRuMs and contribute to a deeper understanding of the character evolution within this clade.https://royalsocietypublishing.org/doi/10.1098/rsob.250057CRuMsprotists with uncertain phylogenetic affiliationsphylogenomicsultrastructures |
| spellingShingle | Euki Yazaki Ryo Harada Ryu Isogai Kohei Bamba Ken-ichiro Ishida Yuji Inagaki Takashi Shiratori Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs Open Biology CRuMs protists with uncertain phylogenetic affiliations phylogenomics ultrastructures |
| title | Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs |
| title_full | Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs |
| title_fullStr | Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs |
| title_full_unstemmed | Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs |
| title_short | Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs |
| title_sort | glissandra oviformis n sp a novel predatory flagellate illuminates the character evolution within the eukaryotic clade crums |
| topic | CRuMs protists with uncertain phylogenetic affiliations phylogenomics ultrastructures |
| url | https://royalsocietypublishing.org/doi/10.1098/rsob.250057 |
| work_keys_str_mv | AT eukiyazaki glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums AT ryoharada glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums AT ryuisogai glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums AT koheibamba glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums AT kenichiroishida glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums AT yujiinagaki glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums AT takashishiratori glissandraoviformisnspanovelpredatoryflagellateilluminatesthecharacterevolutionwithintheeukaryoticcladecrums |