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首页> 外文期刊>Chinese science bulletin >Inclusion of the Eastern Asia endemic genus Sorolepidium in Polystichum (Dryopteridaceae): Evidence from the chloroplast rbcL gene and morphological characteristics
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Inclusion of the Eastern Asia endemic genus Sorolepidium in Polystichum (Dryopteridaceae): Evidence from the chloroplast rbcL gene and morphological characteristics

机译：东亚地方性梭菌属（Sorolepidium）包含在猪笼草（Dryopteridaceae）中：叶绿体rbcL基因和形态特征的证据

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摘要

The taxonomic status of the Eastern Asia endemic Sorolepidium is controversial. Some authors accept it as member of the large diverse genus Polystichum, whereas others suggest that it is an independent genus separated from the later by the exindusiate sorus and the absence of aristate teeth at the pinnae margins. Here we infer phylogenetic relationship of Sorolepidium using DNA sequences of the chloroplast rbcL gene. Phylogenies were inferred using maximum-parsimony, maximum-likelihood, and Bayesian inference methods. Molecular data establish that Sorolepidium is deeply nested within the large genus Polystichum and has a close relationship with P. duthiei and P. lachenense in the model-based analyses. The Kimura 2-parameter distances of the rbcL sequences between S. glaciale and P. duthiei and P. lachenense were 0.1 and 0.2%, respectively. Furthermore, S. glaciale differed from P. duthiei by a single nucleotide in their rbcL sequences. Close relationships between S. glaciale and P. duthiei and P. lachenense are also supported by the shared spore ornamentation with echinate fenes-trate folds.
机译：东亚地方病梭菌的分类学地位是有争议的。一些作者接受它为大型多样的Polystichum属的成员，而另一些人则认为它是一个独立的属，与后者分离的是柔和的so裂和在耳廓边缘没有aristate牙齿。在这里，我们使用叶绿体rbcL基因的DNA序列推导Sorolepidium的系统发生关系。使用最大简约，最大似然和贝叶斯推断方法来推断系统发育。分子数据表明，在基于模型的分析中，番茄孢霉深深地嵌套在大型猪笼草属中，并与杜氏疟原虫和腊肠疟原虫有密切的关系。冰川链球菌与杜氏疟原虫和拉氏疟原虫之间的rbcL序列的Kimura 2参数距离分别为0.1％和0.2％。此外，S。glaciale与P. duthiei在其rbcL序列中的单一核苷酸不同。冰棘葡萄球菌与杜氏假单胞菌和腊肠假单胞菌之间的紧密关系也受到具有棘状棘突褶皱的共享孢子装饰的支持。

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