‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae)
Several <i>Chara</i> L. species have ‘unfinished’ morphogenesis that is recognizable because of their imperfect stem and branchlet cortication compared to the perfectly corticated species. <i>Chara denudata</i> A. Braun, described from South Africa, is one of these species, a...
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MDPI AG
2023-02-01
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| Online Access: | https://www.mdpi.com/1424-2818/15/2/249 |
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| author | Roman E. Romanov Sophia S. Barinova Vyacheslav Yu. Nikulin Andrey A. Gontcharov |
| author_facet | Roman E. Romanov Sophia S. Barinova Vyacheslav Yu. Nikulin Andrey A. Gontcharov |
| author_sort | Roman E. Romanov |
| collection | DOAJ |
| description | Several <i>Chara</i> L. species have ‘unfinished’ morphogenesis that is recognizable because of their imperfect stem and branchlet cortication compared to the perfectly corticated species. <i>Chara denudata</i> A. Braun, described from South Africa, is one of these species, assumed for a long time to be conspecific with <i>C. dissoluta</i> A. Braun ex Leonhardi, as described from Central Europe. An attempt to resolve this long-lasting uncertainty in the framework of integrative taxonomy is implemented here. The restudy of the original material of both species showed similarities but did not identify a hiatus in their morphological traits, which represents evidence for their placement in the subsection <i>Chara</i> R.D. Wood according to morphology. Bifid adaxial bract cells, a trait rarely encountered among charophytes, were found for the first time in <i>C. dissoluta</i>. According to the <i>rbc</i>L and <i>mat</i>K sequences, <i>C. denudata</i> was unexpectedly placed within the section <i>Grovesia</i> R.D. Wood, far from the clusters of the section <i>Chara</i> with <i>C. dissoluta</i>. This is in obvious disagreement with the position of <i>C. denudata</i> according to morphology. Both species were distinct according to their biology, habitat preference, and distribution and were accepted as distinct species. Therefore, the ‘unfinished’ morphogenesis resulting in morphological similarity hides different speciation pathways in charophytes. |
| first_indexed | 2024-03-11T08:55:47Z |
| format | Article |
| id | doaj.art-4455c2da386f406aa7e8438ea2922a1d |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-11T08:55:47Z |
| publishDate | 2023-02-01 |
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| record_format | Article |
| series | Diversity |
| spelling | doaj.art-4455c2da386f406aa7e8438ea2922a1d2023-11-16T20:05:10ZengMDPI AGDiversity1424-28182023-02-0115224910.3390/d15020249‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae)Roman E. Romanov0Sophia S. Barinova1Vyacheslav Yu. Nikulin2Andrey A. Gontcharov3Komarov Botanical Institute of the Russian Academy of Sciences, Professora Popova Str., 2, 197376 St. Petersburg, RussiaInstitute of Evolution, University of Haifa, Abba Khoushi Ave, 199, Mount Carmel, Haifa 3498838, IsraelFederal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 100-letiya Vladivostoka Ave, 159, 690022 Vladivostok, RussiaFederal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 100-letiya Vladivostoka Ave, 159, 690022 Vladivostok, RussiaSeveral <i>Chara</i> L. species have ‘unfinished’ morphogenesis that is recognizable because of their imperfect stem and branchlet cortication compared to the perfectly corticated species. <i>Chara denudata</i> A. Braun, described from South Africa, is one of these species, assumed for a long time to be conspecific with <i>C. dissoluta</i> A. Braun ex Leonhardi, as described from Central Europe. An attempt to resolve this long-lasting uncertainty in the framework of integrative taxonomy is implemented here. The restudy of the original material of both species showed similarities but did not identify a hiatus in their morphological traits, which represents evidence for their placement in the subsection <i>Chara</i> R.D. Wood according to morphology. Bifid adaxial bract cells, a trait rarely encountered among charophytes, were found for the first time in <i>C. dissoluta</i>. According to the <i>rbc</i>L and <i>mat</i>K sequences, <i>C. denudata</i> was unexpectedly placed within the section <i>Grovesia</i> R.D. Wood, far from the clusters of the section <i>Chara</i> with <i>C. dissoluta</i>. This is in obvious disagreement with the position of <i>C. denudata</i> according to morphology. Both species were distinct according to their biology, habitat preference, and distribution and were accepted as distinct species. Therefore, the ‘unfinished’ morphogenesis resulting in morphological similarity hides different speciation pathways in charophytes.https://www.mdpi.com/1424-2818/15/2/249<i>Chara denudata</i><i>Chara dissoluta</i>section <i>Chara</i>section <i>Grovesia</i>morphology<i>rbc</i>L |
| spellingShingle | Roman E. Romanov Sophia S. Barinova Vyacheslav Yu. Nikulin Andrey A. Gontcharov ‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae) Diversity <i>Chara denudata</i> <i>Chara dissoluta</i> section <i>Chara</i> section <i>Grovesia</i> morphology <i>rbc</i>L |
| title | ‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae) |
| title_full | ‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae) |
| title_fullStr | ‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae) |
| title_full_unstemmed | ‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae) |
| title_short | ‘Unfinished’ Morphogenesis Hides Different Speciation Pathways in Charophytes: Evidence from the 190-Year-Old Original Material of <i>Chara denudata</i> (Charales, Charophyceae) |
| title_sort | unfinished morphogenesis hides different speciation pathways in charophytes evidence from the 190 year old original material of i chara denudata i charales charophyceae |
| topic | <i>Chara denudata</i> <i>Chara dissoluta</i> section <i>Chara</i> section <i>Grovesia</i> morphology <i>rbc</i>L |
| url | https://www.mdpi.com/1424-2818/15/2/249 |
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