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首页> 外文期刊>Zoologica Scripta: An International Journal of Evolutionary Zoology >Structural alignment of 18S and 28S rDNA sequences provides insights into phylogeny of Phytophaga (Coleoptera: Curculionoidea and Chrysomeloidea)
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Structural alignment of 18S and 28S rDNA sequences provides insights into phylogeny of Phytophaga (Coleoptera: Curculionoidea and Chrysomeloidea)

机译：18S和28S rDNA序列的结构比对提供了对植食性植物的系统发育的见解（鞘翅目：Curculionoidea和Chrysomeloidea）

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Marvaldi, A. E., Duckett, C. N., Kjer, K. M. & Gillespie, J. J. (2008). Structural alignment of 18S and 28S rDNA sequences provides insights into phylogeny of Phytophaga (Coleoptera: Curculionoidea and Chrysomeloidea). - Zoologica Scripta, **, ***-***. We performed a comparative study of partial rDNA sequences from a variety of Coleoptera taxa to construct an annotated alignment based on secondary structure information, which in turn, provides improved rRNA structure models useful for phylogenetic reconstruction. Subsequent phylogenetic analysis was performed to test monophyly and interfamilial relationships of the megadiverse plant feeding beetle group known as 'Phytophaga' (Curculionoidea and Chrysomeloidea), as well as to discover their closest relatives among the Cucujiformia. Parsimony and Bayesian analyses were performed based on the structural alignment of segments of 18S rRNA (variable regions V4-V5, V7-V9) and 28S rRNA (expansion segment D2). A total of 104 terminal taxa of Coleoptera were included: 96 species of Cucujiformia beetles, representing the families and most 'subfamilies' of weevils and chrysomeloids (Phytophaga), as well as several families of Cleroidea, Tenebrionoidea and Cucujoidea, and eight outgroups from three other polyphagan series: Scarabaeiformia, Elateriformia and Bostrichiformia. The results from the different methods of analysis agree - recovering the monophyly of the 'Phytophaga', including Curculionoidea and Chrysomeloidea as sister groups. The curculionoid and chrysomeloid phylogeny recovered from the aligned 18S and 28S rDNA segments, which is independent of morphological data, is in agreement with recent hypotheses or concepts based on morphological evidence, particularly with respect to familial relationships. Our results provide clues about the evolutionary origin of the phytophagan beetles within the megaclade Cucujiformia, suggesting that the sister group of 'Curculionoidea + Chrysomeloidea' is a clade of the 'Cucujoidea', represented in this study by species in Boganiidae, Erotylidae, Nitidulidae, Cucujidae and Silvanidae. The Coccinellidae and Endomychidae are not grouped with the latter, and the remaining terminal taxa are nested in Tenebrionoidea and Cleroidea. We propose that the combination of structurally aligned ribosomal RNA gene regions 18S (V4-V5, V7-V9) and 28S (D2) are useful in testing monophyly and resolving relationships among beetle superfamilies and families.
机译：Marvaldi，A.E.，Duckett，C.N.，Kjer，K.M.＆Gillespie，J.J.（2008）。 18S和28S rDNA序列的结构比对提供了对植物噬菌体（鞘翅目：Curculionoidea和Chrysomeloidea）的系统发育的见解。 -Zoologica Scripta，**，***-***。我们进行了一项比较研究，研究了多种鞘翅目类群的部分rDNA序列，以基于二级结构信息构建带注释的比对，从而为系统发育重建提供了改进的rRNA结构模型。随后进行了系统发育分析，以测试被称为“ Phytophaga”（Culculionoidea和Chrysomeloidea）的巨型多样植物摄食甲虫组的单亲和亲缘关系，并发现它们之间的亲缘关系。基于18S rRNA片段（可变区V4-V5，V7-V9）和28S rRNA（扩展片段D2）的结构比对，进行了简约和贝叶斯分析。总共包括104个鞘翅目末端类群：96种葫芦科甲虫，代表了象鼻虫和类金龟科（Phytophaga）的科和大多数“亚科”，以及克罗雷德藻，T虫和br科的几个科，以及三个三类其他多吞噬菌体系列：瘢痕aba，El形纲和Bostrichiformia。不同分析方法的结果一致-回收了“噬菌体”的单亲性，其中包括弯孢菌和小球藻作为姐妹组。从对齐的18S和28S rDNA片段中回收的蝶形和类晶系统发育与形态学数据无关，与最近基于形态学证据的假设或概念相符，特别是在家族关系方面。我们的研究结果提供了有关巨角类钩形目中植物噬菌体甲虫进化起源的线索，表明“ Curculionoidea + Chrysomeloidea”的姊妹群是“ Cucujoidea”的分支，在这项研究中，由Boganiidae，Erotylidae，Nitidulidae的物种代表葫芦科和Sil科。球虫科和内线虫科没有与后者分组，其余的末端类群嵌套在特尼伯龙科和克罗立科中。我们建议在结构上对齐的核糖体RNA基因区域18S（V4-V5，V7-V9）和28S（D2）的组合可用于测试单方面和解决甲虫超家族和家庭之间的关系。

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