The impact of multiple molecular and morphological data sets on the phylogenetic reconstruction of subtribe Neurachninae (Poaceae: Panicoideae: Paniceae)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-04-27 DOI:10.1071/SB20015

E. Thompson, Melodina D. Fabillo

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引用次数: 5

Abstract

Abstract. The taxonomy of Neurachninane has been unstable, with its member genera consisting of Ancistrachne, Calyptochloa, Cleistochloa, Dimorphochloa, Neurachne, Paraneurachne and Thyridolepis, changing since its original circumscription that comprised only the latter three genera. Recent studies on the phylogeny of Neurachninae have focused primarily on molecular data. We analysed the phylogeny of Neurachninae on the basis of molecular data from seven molecular loci (plastid markers: matK, ndhF, rbcL, rpl16, rpoC2 and trnLF, and ribosomal internal transcribed spacer, ITS) and morphological data from 104 morphological characters, including new taxonomically informative micromorphology of upper paleas. We devised an impact assessment scoring (IAS) protocol to aid selection of a tree for inferring the phylogeny of Neurachninae. Combining morphological and molecular data resulted in a well resolved phylogeny with the highest IAS value. Our findings support reinstatement of subtribe Neurachninae in its original sense, Neurachne muelleri and Dimorphochloa rigida. We show that Ancistrachne, Cleistochloa and Dimorphochloa are not monophyletic and Ancistrachne maidenii, Calyptochloa, Cleistochloa and Dimorphochloa form a new group, the cleistogamy group, united by having unique morphology associated with reproductive dimorphism.

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多个分子和形态学数据集对神经蜘蛛亚族系统发育重建的影响(禾科:蛇科:蛇科)

摘要Neurachninane的分类学一直不稳定，其成员属包括Ancistrachne、Calyptochloa、Cleistochloa，Dimorphochloa、Neurachne、Paraneurachne和Thyridoidepis，自最初只包括后三个属的范围以来发生了变化。近年来，Neurachninae的系统发育研究主要集中在分子数据上。我们根据7个分子位点（质体标记：matK、ndhF、rbcL、rpl16、rpoC2和trnLF，以及核糖体内部转录间隔区，ITS）的分子数据和104个形态特征的形态学数据，包括新的上苍白的分类信息微形态，分析了新的Neurachninae的系统发育。我们设计了一个影响评估评分（IAS）方案，以帮助选择一棵树来推断Neurachninae的系统发育。结合形态学和分子数据，得到了具有最高IAS值的系统发育。我们的研究结果支持Neurachninae亚系Neurachne muelleri和Dimorphochloa rigida的恢复。我们发现Anistrachne、Cleistochloa和Dimorphochloa不是单系的，而Anistrachine maidenii、Calyptochloa、Cleistachloa和dimorphochlia形成了一个新的类群，即Cleistochomy群，通过具有与生殖二态相关的独特形态而结合在一起。

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来源期刊

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.