论文标题
具有水平弧的自身多倍体，异倍倍体和系统发育网络
Autopolyploidy, allopolyploidy, and phylogenetic networks with horizontal arcs
论文作者
论文摘要
多倍体化是一个进化过程，通过该过程，一个物种获得了其完整染色体集的多个副本。 IT留下的信号的网状性质意味着系统发育网络为重建受其影响的物种的进化过去提供了自己的框架。这样做的主要策略是首先构建一种所谓的多标签树，然后以某种方式从中衍生出这样的网络。因此，出现以下问题：如果不容易获得这样的树，关于过去的过去可以说多少？通过将多倍体数据集视为某个媒介，我们称之为倍性（级别）轮廓，我们表明，除其他结果外，始终存在一个以串珠的系统发育树的形式的系统发育网络，并带有其他弧形，可以实现给定的倍增曲线。有趣的是，几乎所有这些附加弧的两个末端顶点都可以解释为已及时共存，从而在我们的网络中增加了生物现实主义，这通常是系统发育网络所享受的。此外，我们表明我们的网络可能被视为倍增剖面空间的发生器，这是一种类似于系统发育树空间的新颖概念，我们引入了它，以比较实现一个和相同的拼合物的系统发育网络。我们用公开可用的中提琴数据集说明了我们的发现。
Polyploidization is an evolutionary process by which a species acquires multiple copies of its complete set of chromosomes. The reticulate nature of the signal left behind by it means that phylogenetic networks offer themselves as a framework to reconstruct the evolutionary past of species affected by it. The main strategy for doing this is to first construct a so called multiple-labelled tree and to then somehow derive such a network from it. The following question therefore arises: How much can be said about that past if such a tree is not readily available? By viewing a polyploid dataset as a certain vector which we call a ploidy (level) profile we show that, among other results, there always exists a phylogenetic network in the form of a beaded phylogenetic tree with additional arcs that realizes a given ploidy profile. Intriguingly, the two end vertices of almost all of these additional arcs can be interpreted as having co-existed in time thereby adding biological realism to our network, a feature that is, in general, not enjoyed by phylogenetic networks. In addition, we show that our network may be viewed as a generator of ploidy profile space, a novel concept similar to phylogenetic tree space that we introduce to be able to compare phylogenetic networks that realize one and the same ploidy profile. We illustrate our findings in terms of a publicly available Viola dataset.
