Andrea Luchetti

Andrea Luchetti
University of Bologna | UNIBO · Department of Biological, Geological and Environmental Sciences BiGeA

PhD

About

216
Publications
10,855
Reads
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1,236
Citations
Introduction
Andrea Luchetti currently works at the Department of Biological, Geological and Environmental Sciences BiGeA, University of Bologna. Andrea does research in Molecular Systematics & Phylogenetics and Evolutionary Biology. Their current projects are 'Evolution and diversity of Transposable Elements' and 'Evolution of Social Insects'.
Additional affiliations
January 2019 - present
University of Bologna
Position
  • Professor (Associate)
October 2018 - present
University of Bologna
Position
  • Lecturer
Description
  • Animal Diversity and Distribution in a Changing Climate (MSc course of Science and Management of Nature - GLOBAL CHANGE ECOLOGY AND SUSTAINABLE DEVELOPMENT GOALS)
March 2016 - present
University of Bologna
Position
  • Lecturer
Description
  • Lab of Molecular Phylogenetics (MSc course of Biodiversity and Evolution)
Education
January 2004 - December 2006
University of Bologna
Field of study
  • Molecular evolution of repetitive DNA in arthropods
September 1995 - March 2012
University of Bologna
Field of study
  • Molecular evolution of satellite DNA and reproductive biology in stick insects

Publications

Publications (216)
Article
The concept that complex ancestral traits can never be recovered after their loss is still widely accepted, despite phylogenetic and molecular approaches suggest instances where phenotypes may have been lost throughout the evolutionary history of a clade and subsequently reverted back in derived lineages. One of the first and most notable examples...
Poster
Full-text available
Here we provide the very first genomic characterization of HPHGs in the two tadpole shrimp (Branchiopoda, Notostraca) living genera, Triops and Lepidurus. Tadpole shrimps are pretty charismatic crustaceans for they show an outstanding morphological and ecological stasis and an ancient origin dating back to the Permian (Gueriau et al., 2016). Recent...
Article
The West-Palaearctic Colobopsis ant populations have long been considered a single species (Colobopsis truncata). We studied the diversity of this species by employing a multidisciplinary approach and combining data from our surveys, museum and private collections, and citizen science platforms. As a result, we have revealed the existence of a seco...
Article
Full-text available
The class Branchiopoda, whose origin dates back to Cambrian, includes ~ 1200 species which mainly occupy freshwater habitats. The phylogeny and systematics of the class have been debated for long time, until recent phylogenomic analyses allowed to better clarify the relationships among major clades. Based on these data, the clade Anostraca (fairy a...
Article
Full-text available
The myth of a “typical” mitochondrial genome (mtDNA) is a rock-hard belief in the field of genetics, at least for the animal kingdom [...]
Article
This analysis presents five genome assemblies of four Notostraca taxa. Notostraca origin dates to the Permian/Upper Devonian and the extant forms show a striking morphological similarity to fossil taxa. The comparison of sequenced genomes with other Branchiopoda genomes shows that, despite the morphological stasis, Notostraca share a dynamic genome...
Article
Full-text available
Inferring the selective forces that orthologous genes underwent across different lineages can help us understand the evolutionary processes that have shaped their extant diversity and the phenotypes they underlie. The most widespread metric to estimate the selection regimes of coding genes—across sites and phylogenies—is the ratio of nonsynonymous...
Article
Full-text available
Notwithstanding the initial claims of general conservation, mitochondrial genomes are a largely heterogeneous set of organellar chromosomes which displays a bewildering diversity in terms of structure, architecture, gene content, and functionality. The mitochondrial genome is typically described as a single chromosome, yet many examples of multipar...
Preprint
Full-text available
Inferring the selective forces that different ortholog genes underwent across different lineages can make us understand the evolutionary processes which shaped their extant diversity. The more widespread metric to estimate coding sequences selection regimes across across their sites and species phylogeny is the ratio of nonsynonymous to synonymous...
Preprint
Full-text available
A bstract The concept that complex ancestral traits can never be re-acquired after their loss has grown popular since its initial formulation and it’s often referred to as Dollo’s law. Nonetheless, several macroevolutionary evidences - along with molecular ones - suggest instances where complex phenotypes could have been lost throughout a clade evo...
Article
Phasmatodea species diversity lies almost entirely within its suborder Euphasmatodea, which exhibits a pantropical distribution and is considered to derive from a recent and rapid evolutionary radiation. To shed light on Euphasmatodea origins and diversification, we assembled the mitogenomes of 17 species from transcriptomic sequencing data and ana...
Article
The stick-insect genus Pijnackeria includes four diploid bisexual and two polyploid (3n, 4n) parthenogenetic species. Earlier analyses of the tetraploid parthenogen P. hispanica using mitochondrial markers allowed tracing its maternal ancestry to Pijnackeria originis, while no maternal nuclear contribution was found, thus suggesting an androgenetic...
Article
Full-text available
Terminal repeat retrotransposons in miniature (TRIMs) are small non-autonomous LTR retrotransposons consisting of two terminal direct repeats surrounding a short internal domain. The detection and characterization of these elements has been mainly limited to plants. Here we present the first finding of a TRIM element in bivalves, and among the firs...
Article
Full-text available
Background The crustacean class Branchiopoda includes fairy shrimps, clam shrimps, tadpole shrimps, and water fleas. Branchiopods, which are well known for their great variety of reproductive strategies, date back to the Cambrian and extant taxa can be mainly found in freshwater habitats, also including ephemeral ponds. Mitochondrial genomes of the...
Article
Stingless bees often associate with termites, while association with ants is uncommon due to the high costs related to the aggressiveness of ants. Few combative genera of stingless bees can associate with a larger number of hosts, including ants. Here, we describe for the first time the association between a stingless bee (Partamona testacea) and t...
Article
Full-text available
Transposable elements are widely distributed within genomes where they may significantly impact their evolution and cell functions. Short interspersed elements (SINEs) are non-autonomous, fast-evolving elements, but some of them carry a highly conserved domain (HCD), whose sequence remained substantially unchanged throughout the metazoan evolution....
Article
Full-text available
Thousands of eukaryotes transcriptomes have been generated, mainly to investigate nuclear genes expression, and the amount of available data is constantly increasing. A neglected but promising use of this large amount of data is to assemble organelle genomes. To assess the reliability of this approach, we attempted to reconstruct complete mitochond...
Article
Full-text available
Although DNA transposons often generated internal deleted derivatives such as miniature inverted-repeat transposable elements (MITEs), short internally deleted elements (SIDEs) derived from non-long terminal repeat retrotransposons are rare. Here, we found a novel SIDE, named Persaeus, that originated from the chicken repeat 1 (CR1) retrotransposon...
Article
Crustaceans of the order Notostraca (Branchiopoda) are distributed worldwide and are known for the remarkable morphological stasis between their extant and Permian fossil species. Moreover, these crustaceans show relevant ecological traits and a wide range of reproductive strategies. However, genomic studies on notostracans are fairly limited. Here...
Article
Full-text available
Background: Transposable elements (TEs) are common and often present with high copy numbers in cellular genomes. Unlike in cellular organisms, TEs were previously thought to be either rare or absent in viruses. Almost all reported TEs display only one or two copies per viral genome. In addition, the discovery of pandoraviruses with genomes up to 2...
Article
Full-text available
Biological invasions are among key factors of ecological changes, and social insects appear as highly successful invasive animals. Subterranean termites of the holarctic genus Reticulitermes are present in Europe with six native and one invasive (the nearctic R. flavipes) species. The species R. urbis shows a disjunct distribution in the Western Ba...
Article
Full-text available
European dry-wood termites belong to the genus Kalotermes (Kalotermitidae), one of the two termite genera in Europe. Until the recent description of two new species, Kalotermes italicus in Italy and Kalotermes phoenicae in the eastern Mediterranean area, Kalotermes flavicollis was the only taxon known in this region. The presence of additional enti...
Article
Full-text available
Short interspersed elements (SINEs) are non-autonomous retrotransposons. Although they usually show fast evolutionary rates, in some instances highly conserved domains (HCDs) have been observed in elements with otherwise divergent sequences and from distantly related species. Here we document the life history of two HCD-SINE families in the elephan...
Article
Full-text available
Horizontal transfer (HT) is an event in which the genetic material is transferred from one species to another, even if distantly related, and it has been demonstrated as a possible essential part of the lifecycle of transposable elements (TEs). However, previous studies on the non-LTR R2 retrotransposon, a metazoan-wide distributed element, indicat...
Article
Full-text available
Background Satellite DNA (satDNA) sequences are typically arranged as arrays of tandemly repeated monomers. Due to the similarity among monomers, their organizational pattern and abundance, satDNAs are hardly accessible to structural and functional studies and still represent the most obscure genome component. Although many satDNA arrays of diverse...
Article
Full-text available
Transposable elements (TEs) are self-replicating, mobile DNA sequences which constitute a significant fraction of eukaryotic genomes. They are generally considered selfish DNA, as their replication and random insertion may have deleterious effects on genome functionalities, although some beneficial effects and evolutionary potential have been recog...
Article
Full-text available
Short interspersed elements (SINEs) are non-autonomous retrotransposons that are widespread in eukaryotic genomes. They exhibit a chimeric sequence structure consisting of a small RNA-related head, an anonymous body and an AT-rich tail. Although their turnover and de novo emergence is rapid, some SINE elements found in distantly related species ret...
Article
Three isolates (A19T, C21 and F12 ) with spiral shaped cells and one bipolar sheathed flagellum were obtained from gastric mucosa and caecal contents of three different wild boars (Sus scrofa) and subjected to a polyphasic taxonomic study. A genus-specific PCR showed that these isolates belonged to the genus Helicobacter. Phylogenetic analysis base...
Article
Transposable elements (TEs) are selfish genetic elements whose self-replication is contrasted by the host genome. In this context, host reproductive strategies are predicted to impact on both TEs load and activity. The presence and insertion distribution of the non-LTR retrotransposon R2 was here studied in populations of the strictly bisexual Baci...
Poster
Termites are social insects living in colonies generally founded as simple families by a couple of primary reproducers (royals). Colonies, then, grow up in extended families because secondary kings and queens (neotenics) develop. In some species of the Reticulitermes genus, secondary queens are produced through parthenogenesis; they will mate with...
Poster
According to the most recent phylogenetic and phylogeographic investigations, the Kalotermes genus (Kalotermitidae) includes three different mitochondrial lineages of K. flavicollis and the new K. italicus species. In some Italian populations extreme colony fusion events were observed, with mixed families composed by up to nine maternal lines belon...
Poster
According to the most recent phylogenetic and phylogeographic investigations, the Kalotermes genus (Kalotermitidae) includes three different mitochondrial lineages of K. flavicollis and the new K. italicus species. In some Italian populations extreme colony fusion events were observed, with mixed families composed by up to nine maternal lines belon...
Article
Full-text available
R2 is an extensively investigated non-LTR retrotransposon that specifically inserts into the 28S rRNA gene sequences of a wide range of metazoans, disrupting its functionality. During R2 integration, first strand synthesis can be incomplete so that 5' end deleted copies are occasionally inserted. While active R2 copies repopulate the locus by retro...
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Article
Transposable elements (TEs) are discrete DNA sequences which are able to replicate and jump into different genomic locations. Miniature inverted-repeats TEs (MITEs) are non-autonomous DNA elements whose origin is still poorly understood. Recently, some MITEs were found to contain core repeats that can be arranged in tandem arrays; in some instances...
Article
Theoretical and empirical studies have shown differential management of transposable elements in organisms with different reproductive strategies. To investigate this issue, we analysed the R2 retroelement structure and variability in parthenogenetic and bisexual populations of Bacillus rossius stick insects, as well as insertions inheritance in th...
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