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首页> 外文期刊>Systematic Botany >New Insights into the Evolution of Passiflora subgenus Decaloba (Passifloraceae): Phylogenetic Relationships and Morphological Synapomorphies
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New Insights into the Evolution of Passiflora subgenus Decaloba (Passifloraceae): Phylogenetic Relationships and Morphological Synapomorphies

机译：西番莲亚科（西番莲科）进化的新见解：系统发育关系和形态同形。

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摘要

Phylogenetic relationships of Passiflora subgenus Decaloba were examined using 148 taxa and four molecular markers: nuclear nrITS, ncpGS, cp trnL-F, and ndhF. Relationships of subgenus Decaloba to the other four Passiflora subgenera (Astrophea, Deidamioides, Tetrapathea, and Passiflora) are investigated, as are relationships among the eight supersections within subgenus Decaloba. Results indicate that subgenus Deidamioides is not monophyletic. Subgenus Astrophea + subgenus Deidamioides (section Tryphostemmatoides) together form the most basally branching lineage in the genus, followed by a clade comprised of subgenus Passiflora + subgenus Deidamioides (sections Tetrastylis, Polyanthea, and Deidamioides). Passiflora obovata (subgenus Deidamioides section Mayapathanthus) is resolved as part of subgenus Decaloba. The Old World subgenus Tetrapathea is supported as sister to subgenus Decaloba. Subgenus Decaloba is monophyletic and contains seven major lineages that generally correspond to currently recognized supersections. Within subgenus Decaloba, supersection Pterosperma is most basally branching, followed by supersection Hahniopathanthus + P. obovata. The New World species Pass(ora multiflora, the type of supersection Multiflora, is resolved as sister to a monophyletic Old World supersection Disemma. The remainder of the former supersection Multiflora is paraphyletic with respect to supersection Auriculata. Supersections Cieca, Bryonioides, and Decaloba are monophyletic. Within supersection Decaloba, two main clades are resolved: 1) section Xerogona + section Decaloba pro parte and 2) the remainder of section Decaloba. The molecular phylogeny supports a New World origin for Passiflora, with two independent radiations to the Old World. Morphological synapomorphies are discussed for the major clades, documenting a pattern of remarkable evolutionary lability in several notable characters.
机译：用148个分类单元和4个分子标记（核nrITS，ncpGS，cp trnL-F和ndhF）检查了西番莲（Decaloba）亚属的亲缘关系。研究了Decaloba亚属与其他四个Passiflora亚属（Astrophea，Deidamioides，Tetrapathea和Passiflora）的关系，以及Decaloba亚属中八个上切部分之间的关​​系。结果表明，地衣二胺类不是单系的。天体亚种+ Deidamioides亚类（Tryphostemmatoides节）共同构成该属中最基本的分支谱系，然后是由西番莲亚属+ Deidamioides亚类（Tetrastylis，Polyanthea和Deidamioides部分）组成的进化枝。西番莲（Deidaamioides部分Mayapathanthus）被分解为Decaloba亚属的一部分。老世界四足纲亚纲（Tetrapathea）被作为Decaloba亚纲的姐妹。 Decaloba亚属是单系的，包含七个主要谱系，这些谱系通常对应于当前公认的上层切片。在Decaloba亚属内，上层翼状per肉最基部分支，其后是上层钩毛病+卵形假单胞菌。新世界物种Pass（ora multiflora，超节的类型，被解析为单种旧世界超节Disemma的姐妹。前超级节的其余部分相对于Auriculata超节是共生的。超节Cieca，Bryonioides和Decaloba是在上层Decaloba区域内，可以分辨出两个主要分支：1）Xerogona区+单面Decaloba区; 2）Decaloba区的其余部分。分子系统发育支持西番莲的新世界起源，向旧世界有两次独立的辐射。讨论了主要进化枝的形态同形，记录了几个显着特征中显着的进化不稳定性的模式。

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