Elachanthus、Isoetopsis 和 Kippistia 嵌套在 Minuria 属中(菊科:Asterereae)。

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-17 DOI:10.1071/sb23028
A. Schmidt‐Lebuhn, Stephanie H. Chen, Alicia Grealy
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引用次数: 0

摘要

在对澳大利亚菊科Astereae属的序列捕获数据进行系统发生分析时,我们发现Elachanthus pusillus F.Muell.、Isoetopsis graminifolia Turcz.和Kippistia suaedifolia F.Muell.与Minuria形成一个支系。因此,我们对这一支系进行了重点分析,但使用了这三个小属的重复样本,结果得到了证实。从 1876 年到 1980 年,Kippistia 曾被归入 Minuria 的同义词,后来又被重新归入 Minuria 的同义词。Elachanthus 和 Isoetopsis 以前并没有被认为是 Minuria 的一部分,事实上,Isoetopsis 一直被认为在形态上非常不同,甚至其部落归属长期以来都存在争议。然而,仔细观察后发现,Elachanthus 和 Isoetopsis 与 Minuria 惊人相似,尤其是在胞果和叶枕形态上。这两个属是从 Minuria 的共同祖先演化而来的,这是因为它们与该属的一年生种(如 M. annua)总体相似,它们的多行均匀的草质小叶边缘具干膜质,鳞片状的叶枕与 Minuria 的倾向于形成鳞片状基部的叶枕、雌性外小花和雄性内小花,以及与 Minuria 某些种共享的胞果毛被。我们在 Minuria 下提出了以下三个新的组合:M. pusilla、M. glabra 和 M. graminifolia。
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Elachanthus, Isoetopsis and Kippistia are nested in the genus Minuria (Asteraceae: Astereae)
While conducting phylogenetic analyses of sequence-capture data of Australian members of Asteraceae tribe Astereae, we found that Elachanthus pusillus F.Muell., Isoetopsis graminifolia Turcz. and Kippistia suaedifolia F.Muell. formed a clade with Minuria. We, therefore, conducted an analysis focused on this clade, but with replicate samples of the three smaller genera, and confirmed our results. Kippistia had been synonymised under Minuria between 1876 and 1980, when it was reinstated. Elachanthus and Isoetopsis had not previously been suggested to be part of Minuria, and, indeed, Isoetopsis had been considered so morphologically divergent that even its tribal affiliations were long controversial. However, on closer examination, Elachanthus and Isoetopsis are strikingly similar to Minuria, especially in cypsela and pappus morphology. The evolution of both genera from a common ancestor in Minuria appears plausible in the light of their overall similarity to annual species of that genus such as M. annua, their multiple uniform rows of herbaceous phyllaries with scarious margins, a pappus of scales v. the tendency of Minuria to form pappi with scale-like bases, female outer and male inner florets, and a cypsela indumentum shared with some species of Minuria. We propose the following three new combinations under Minuria: M. pusilla, M. glabra and M. graminifolia.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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