Species Phylogeny versus Gene Trees: A Case Study of an Incongruent Data Matrix Based on Paphiopedilum Pfitz. (Orchidaceae)

被引：3

作者：

Gorniak, Marcin ^{[1
]}

Szlachetko, Dariusz L. ^{[2
]}

Oledrzynska, Natalia ^{[2
]}

Naczk, Aleksandra M. ^{[1
]}

Mieszkowska, Agata ^{[1
]}

Boss, Lidia ^{[3
]}

Zietara, Marek S. ^{[1
]}

机构：

[1] Univ Gdansk, Dept Evolutionary Genet & Biosystemat, PL-80309 Gdansk, Poland

[2] Univ Gdansk, Dept Plant Taxon & Nat Conservat, PL-80309 Gdansk, Poland

[3] Univ Gdansk, Dept Bacterial Mol Genet, PL-80309 Gdansk, Poland

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2021年 / 22卷 / 21期

关键词：

homoploid hybridization; nuclear genes; concatenation; molecular dating; Orchidaceae; Paphiopedilum; RETICULATE EVOLUTION; SEQUENCE ALIGNMENT; DIVERSIFICATION; CYPRIPEDIOIDEAE; HYBRIDIZATION; PERFORMANCE; INTERFACE;

D O I：

10.3390/ijms222111393

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The phylogeny of the genus Paphiopedilum based on the plastome is consistent with morphological analysis. However, to date, none of the analyzed nuclear markers has confirmed this. Topology incongruence among the trees of different nuclear markers concerns entire sections of the subgenus Paphiopedilum. The low-copy nuclear protein-coding gene PHYC was obtained for 22 species representing all sections and subgenera of Paphiopedilum. The nuclear-based phylogeny is supported by morphological characteristics and plastid data analysis. We assumed that an incongruence in nuclear gene trees is caused by ancestral homoploid hybridization. We present a model for inferring the phylogeny of the species despite the incongruence of the different tree topologies. Our analysis, based on six low-copy nuclear genes, is congruent with plastome phylogeny and has been confirmed by phylogenetic network analysis.

引用

页数：13