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Molecular Phylogeny of Daucus (Apiaceae)

机译:胡萝卜的分子系统发育

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摘要

We studied the phylogeny of 22 accessions of Daunts and seven accessions in related genera, with DNA sequences from eight nuclear orthologs and one plastid (psbA/trnH) region. Maximum parsimony and maximum likelihood analyses of the concatenated data matrix of 7,212 aligned nucleotides provided excellent bootstrap support for many clades. Concordant with prior molecular results Pseudorlaya pumila was firmly imbedded within Daucus, as was Margottia gummifera, a new finding. All accessions of D. capillifolius, D. carota, and D. sahariensis formed a 2n = 18 clade with all other species within the Daucus clade with chromosome numbers of = 20, 22, and 44 (D. glochidiatus). Sister to the D. carota clade was a clade containing Margottia gummifera and Pseudorlaya pumila, sister to these species was D. crinitus, sister to all the above was D. muricatus, and sister to all of the above was a clade containing the remaining Daucus species. Bayesian analyses of individual regions analyzed separately and averaged over multiple trees with *BEAST software (a coalescent approach), however, provided a phylogeny at variance with the concatenated approach, most notably in firmly imbedding Turgenia latifolia within Daucus.
机译:我们研究了Daunts的22个种和相关属的7个种的系统发育,其中的DNA序列来自8个核直系同源基因和1个质体(psbA / trnH)区。对7,212个对齐核苷酸的串联数据矩阵的最大简约性和最大似然分析为许多进化枝提供了出色的自举支持。与先前的分子结果一致,Pseudorlaya pumila和新发现的Margottia gummifera牢固地嵌入了Daucus中。 D. capillifolius,D。carota和D. sahariensis的所有种与Daucus进化枝中所有其他物种的染色体数分别为20、22和44(D。glochidiatus)形成2n = 18进化枝。 D. carota进化枝的姐妹是一个包含Margottia gummifera和Pseudorlaya pumila的进化枝,这些物种的姐妹是D. crinitus,上述所有的姐妹是D. muricatus,而上述所有的姐妹是一个包含其余Daucus的进化枝。种类。贝叶斯对各个区域的分析分别进行了分析,并使用* BEAST软件(合并方法)对多棵树取平均值,但与级联方法产生的系统发育差异很大,其中最显着的是将Daucus中的阔叶白桦牢固地嵌入其中。

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