| Yazarlar |
Doç. Dr. Deniz AYGÖREN ULUER
Kırşehir Ahi Evran Üniversitesi, Türkiye |
| Özet |
| Tribe Lithospermeae (Boraginaceae) consists of ca. 26 gen-era and 470 species, in which Onosma constitutes approximately one third of the species (-150). Although the tribe is strongly supported as monophyletic, both generic and species boundaries remain ambigu-ous. Among them, not only the phylogenetic position of Eastern Asian Onosma species, but also the taxonomic limits of the genus remain unclear. Whether Eastern Asian Onosma is monophyletic, or the genus should be widened to include Maharanga, and maybe Cystostemon, are still open questions. For these reasons, I performed 16 phylogenet-ic analyses with different taxon coverages, alignments, gene regions and outgroups, with up to 746 taxa of tribe Lithospermeae and with five DNA regions, using data from GenBank. The results, with the widest taxon coverage to date, show that while genus Onosma is not monophyletic in any of the analyses, the phylogenetic relationships among Onosma s.s., Eastern Asian Onosma, Maharanga and Cystos-temon differ among analyses. However, the approximately unbiased (AU) test showed that the topology (((Eastern Asian Onosma+Ma-haranga) Cystostemon) Onosma s.s.) is overwhelmingly supported. Therefore, the current study highlights the importance of taxon, gene and outgroup sampling in Onosma phylogenetics. |
| Anahtar Kelimeler |
| Cystostemon, Lithospermeae, Maharanga, Onosma, out-group, phylogeny, taxon, gene sampling |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Anales del Jardín Botánico de Madrid |
| Dergi ISSN | 0211-1322 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q4 |
| Makale Dili | İngilizce |
| Basım Tarihi | 06-2023 |
| Cilt No | 80 |
| Sayı | 1 |
| Doi Numarası | 10.3989/ajbm.2630 |
| Makale Linki | http://dx.doi.org/10.3989/ajbm.2630 |
| Atıf Sayıları |
