MicroRNA evolution provides new evidence for a close relationship of Diplura to Insecta

  title={MicroRNA evolution provides new evidence for a close relationship of Diplura to Insecta},
  author={Aihong Liu and Wan-Jun Chen and Cheng-Wang Huang and Changyuan Qian and Yan Liang and S. Li and S. Zhan and Yun-Xia Luan},
  journal={Systematic Entomology},
The phylogenetic interrelationships among four hexapod lineages (Protura, Collembola, Diplura and Insecta) are pivotal to understanding the origin of insects and the early diversification of Hexapoda, but they have been difficult to clarify based on the available data. In this study, we identified 91 conserved microRNA (miRNA) families from 36 panarthropod taxa, including seven newly sequenced non‐insect hexapods. We found major clade differentiation accompanied by the origin of novel miRNA… Expand
Large-Scale Annotation and Evolution Analysis of MiRNA in Insects
A comprehensive data set and a detailed evolutionary analysis of miRNAs in insects are provided, including extensive miRNA losses in Paraneoptera that are correlated with morphological reduction, and miRNA gains in early Endopterygota around the time holometabolic metamorphosis appeared. Expand


Phylogenetic analysis of mitochondrial protein coding genes confirms the reciprocal paraphyly of Hexapoda and Crustacea
The finding of the reciprocal paraphyly of Hexapoda and Crustacea suggests an evolutionary scenario in which the acquisition of the hexapod condition may have occurred several times independently in lineages descending from different crustacean-like ancestors, possibly as a consequence of the process of terrestrialization. Expand
Comparative Analysis of Mitochondrial Genomes in Diplura (Hexapoda, Arthropoda): Taxon Sampling Is Crucial for Phylogenetic Inferences
Partitioned phylogenetic analyses retrieve significant support for a monophyletic Diplura within Pancrustacea, with Projapygoidea more closely related to Campodeoidea than to Japygoidesa, which explains the dipluran polyphyly found by past mitogenomic studies. Expand
The mitochondrial genome of Sinentomon erythranum (Arthropoda: Hexapoda: Protura): an example of highly divergent evolution
The phylogenetic analyses based on the amino acid sequences of 13 mitochondrial PCGs suggest S. erythranum failed to group with other hexapod groups, and suggests a long evolutionary history for the Protura. Expand
Molecular phylogenetic analyses support the monophyly of Hexapoda and suggest the paraphyly of Entognatha
This is the first study to include all hexapod orders in a phylogenetic analysis using multiple nuclear protein-coding genes to investigate the phylogeny of Hexapoda, with an emphasis on Entognatha, and shows that Protura is the sister lineage to all other hexapods and that DiplURA or Diplura + Collembola is closely related to Ectognatha. Expand
Pervasive microRNA Duplication in Chelicerates: Insights from the Embryonic microRNA Repertoire of the Spider Parasteatoda tepidariorum
This work characterized the microRNA repertoire expressed during embryogenesis of the common house spider Parasteatoda tepidariorum and revealed a similar pattern of duplication in other spiders and a scorpion, but not among other chelicerates and arthropods, with the exception of a horseshoe crab. Expand
The microRNA toolkit of insects
It is shown that the variation of insect miRNAs is an artefact mainly resulting from poor sampling and inaccurate miRNA annotation, and that insects share a conserved microRNA toolkit of 65 families exhibiting very low variation. Expand
Identification, expression, and molecular evolution of microRNAs in the "living fossil" Triops cancriformis (tadpole shrimp).
This study investigated the miRNAs of the nonmodel species Triops cancriformis, a "living fossil," whose morphological form has not changed in almost 200 million years, and deduced the components of its RNAi machinery: the DICER1, AGO1-3, PIWI, and AUB proteins. Expand
MicroRNAs and phylogenomics resolve the relationships of Tardigrada and suggest that velvet worms are the sister group of Arthropoda
The study confirms the monophyly of the legged ecdysozoans, shows that past support for a Tardigrada + Nematoda group was due to long-branch attraction, and suggests that the velvet worms are the sister group to the arthropods. Expand
miRNAs: small genes with big potential in metazoan phylogenetics.
Phylogenetic analyses using both Bayesian and parsimony methods on a eumetazoan miRNA data set highlight the potential of miRNAs to become an invaluable new tool, especially when used as an additional line of evidence, to resolve previously intractable nodes within the tree of life. Expand
Arthropod relationships revealed by phylogenomic analysis of nuclear protein-coding sequences
This work presents strongly supported results from likelihood, Bayesian and parsimony analyses of over 41 kilobases of aligned DNA sequence from 62 single-copy nuclear protein-coding genes from 75 arthropod species, providing a statistically well-supported phylogenetic framework for the largest animal phylum. Expand