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首页> 外文期刊>Systematic Botany >Phylogeny of Leavenworthia and Selenia (Brassicaceae)
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Phylogeny of Leavenworthia and Selenia (Brassicaceae)

机译：Levenworthia和Selenia（芸苔科）的系统发育

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摘要

The present study aimed to develop a robust, extensively sampled phylogenetic hypothesis across all species in Leavenworthia and Selenia using chloroplast (psbJ-petA) and nuclear encoded (nrDNA ITS and LUMINIDEPENDENS) DNA sequence data. Parsimony and maximum likelihood methodologies were employed. Strong maximum likelihood bootstrap and parsimony jackknife support were recovered for the monophyly of the sister pair Leavenworthia plus Selenia and for the respective monophyly of each genus. Leavenworthia and Selenia are hypothesized to have diverged in the Ozark Mountains and results from an analysis of branch lengths leading to Leavenworthia and Selenia clades are consistent with Leavenworthia having diversified more recently than Selenia. Polyploidy and extensive aneuploidy complicate the interpretation of chromosomal evolution within and between these genera. Comparative results from phylogenetic analyses indicate that L. aurea and L. texana are hybrids with a shared set of putative parents. Lastly, patterns of diversification within Leavenworthia appear to have included a minimum of three transformations from self-incompatible to self-compatible systems.
机译：本研究的目的是使用叶绿体（psbJ-petA）和核编码的（nrDNA ITS和LUMINIDEPENDENS）DNA序列数据，为Leavenworthia和Selenia中的所有物种建立一个稳健的，广泛采样的系统发生假说。采用简约和最大似然方法。姐妹对Leavenworthia加上Selenia的单性和每个属的相应的单性都获得了强大的最大似然自举和简约的折刀支持。假设Leavenworthia和Selenia在Ozark山区已经分叉，对导致Leavenworthia和Selenia进化枝分支长度的分析结果与Leavenworthia比Selenia多样化最近相一致。多倍体和广泛的非整倍体使这些属内和之间的染色体进化的解释复杂化。系统发育分析的比较结果表明，金黄色葡萄球菌和德州L. texana是具有一组假定父母的杂种。最后，Leavenworthia内的多样化模式似乎至少包括从自我不相容系统到自我相容系统的三种转换。

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