کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5919136 1570814 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multilocus phylogeny reconstruction: New insights into the evolutionary history of the genus Petunia
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Multilocus phylogeny reconstruction: New insights into the evolutionary history of the genus Petunia
چکیده انگلیسی


- The first complete species-level and multilocus phylogeny of Petunia presented.
- Best-supported and reliable nodes detected in a phylogenetic tree including plastid and nuclear sequences.
- Two major clades related with tube length were identified.
- The ancestor of Petunia had a short corolla tube, bee pollination, and Pampas lowland origin.

The phylogeny of Petunia species has been difficult to resolve, primarily due to the recent diversification of the genus. Several studies have included molecular data in phylogenetic reconstructions of this genus, but all of them have failed to include all taxa and/or analyzed few genetic markers. In the present study, we employed the most inclusive genetic and taxonomic datasets for the genus, aiming to reconstruct the evolutionary history of Petunia based on molecular phylogeny, biogeographic distribution, and character evolution. We included all 20 Petunia morphological species or subspecies in these analyses. Based on nine nuclear and five plastid DNA markers, our phylogenetic analysis reinforces the monophyly of the genus Petunia and supports the hypothesis that the basal divergence is more related to the differentiation of corolla tube length, whereas the geographic distribution of species is more related to divergences within these main clades. Ancestral area reconstructions suggest the Pampas region as the area of origin and earliest divergence in Petunia. The state reconstructions suggest that the ancestor of Petunia might have had a short corolla tube and a bee pollination floral syndrome.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 81, December 2014, Pages 19-28
نویسندگان
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