Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms
Nucleomorphs, relic endosymbiont nuclei, have been studied as a model to elucidate the evolutionary process of integrating a eukaryotic endosymbiont into a host cell organelle. Recently, we reported two new dinoflagellates possessing nucleomorphs, and proposed them as new models in this research fie...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-01-01
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| Series: | Communicative & Integrative Biology |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19420889.2020.1776568 |
| _version_ | 1818966653070737408 |
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| author | Takuro Nakayama Kazuya Takahashi Ryoma Kamikawa Mitsunori Iwataki Yuji Inagaki Goro Tanifuji |
| author_facet | Takuro Nakayama Kazuya Takahashi Ryoma Kamikawa Mitsunori Iwataki Yuji Inagaki Goro Tanifuji |
| author_sort | Takuro Nakayama |
| collection | DOAJ |
| description | Nucleomorphs, relic endosymbiont nuclei, have been studied as a model to elucidate the evolutionary process of integrating a eukaryotic endosymbiont into a host cell organelle. Recently, we reported two new dinoflagellates possessing nucleomorphs, and proposed them as new models in this research field based on the following findings: genome integration processes are incomplete, and the origins of the endosymbiont lineages were pinpointed. Here, we focused on the nucleomorph genome features in the two green dinoflagellates and compared them with those of the known nucleomorph genomes of cryptophytes and chlorarachniophytes. All nucleomorph genomes showed similar trends suggesting convergent evolution. However, the number of nucleomorph genes that are unrelated to housekeeping machineries in the two green dinoflagellates are greater than the numbers in cryptophytes and chlorarachniophytes, providing additional evidence that their genome reduction has not progressed much compared with those of cryptophytes and chlorarachniophytes. Finally, potential future work is discussed. |
| first_indexed | 2024-12-20T13:36:19Z |
| format | Article |
| id | doaj.art-33303111bd734c61a423d97cb51daf4d |
| institution | Directory Open Access Journal |
| issn | 1942-0889 |
| language | English |
| last_indexed | 2024-12-20T13:36:19Z |
| publishDate | 2020-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Communicative & Integrative Biology |
| spelling | doaj.art-33303111bd734c61a423d97cb51daf4d2022-12-21T19:38:56ZengTaylor & Francis GroupCommunicative & Integrative Biology1942-08892020-01-01131848810.1080/19420889.2020.17765681776568Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organismsTakuro Nakayama0Kazuya Takahashi1Ryoma Kamikawa2Mitsunori Iwataki3Yuji Inagaki4Goro Tanifuji5Tohoku UniversityThe University of TokyoKyoto UniversityThe University of TokyoUniversity of TsukubaNational Museum of Nature and ScienceNucleomorphs, relic endosymbiont nuclei, have been studied as a model to elucidate the evolutionary process of integrating a eukaryotic endosymbiont into a host cell organelle. Recently, we reported two new dinoflagellates possessing nucleomorphs, and proposed them as new models in this research field based on the following findings: genome integration processes are incomplete, and the origins of the endosymbiont lineages were pinpointed. Here, we focused on the nucleomorph genome features in the two green dinoflagellates and compared them with those of the known nucleomorph genomes of cryptophytes and chlorarachniophytes. All nucleomorph genomes showed similar trends suggesting convergent evolution. However, the number of nucleomorph genes that are unrelated to housekeeping machineries in the two green dinoflagellates are greater than the numbers in cryptophytes and chlorarachniophytes, providing additional evidence that their genome reduction has not progressed much compared with those of cryptophytes and chlorarachniophytes. Finally, potential future work is discussed.http://dx.doi.org/10.1080/19420889.2020.1776568nucleomorphsecondary endosymbiosisgenome reductionendosymbiotic gene transfer |
| spellingShingle | Takuro Nakayama Kazuya Takahashi Ryoma Kamikawa Mitsunori Iwataki Yuji Inagaki Goro Tanifuji Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms Communicative & Integrative Biology nucleomorph secondary endosymbiosis genome reduction endosymbiotic gene transfer |
| title | Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms |
| title_full | Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms |
| title_fullStr | Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms |
| title_full_unstemmed | Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms |
| title_short | Putative genome features of relic green alga-derived nuclei in dinoflagellates and future perspectives as model organisms |
| title_sort | putative genome features of relic green alga derived nuclei in dinoflagellates and future perspectives as model organisms |
| topic | nucleomorph secondary endosymbiosis genome reduction endosymbiotic gene transfer |
| url | http://dx.doi.org/10.1080/19420889.2020.1776568 |
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