Evolutionary history of LTR-retrotransposons among 20 Drosophila species

Chromodomain-containing LTR retrotransposons are one of the most successful groups of mobile elements in plant genomes. Previously, we demonstrated that two types of chromodomains (CHDs) are carried by plant LTR retrotransposons. Chromodomains from group I (CHD_I) were detected only in Tcn1-like LTR retrotransposons from nonseed plants such as mosses (including the model moss species Physcomitrella) and lycophytes (the Selaginella species). LTR retrotransposon chromodomains from group II (CHD_II) have been described from a wide range of higher plants. In the present study, we performed computer-based mining of plant LTR retrotransposon CHDs from diverse plants with an emphasis on spike-moss Selaginella. Our extended comparative and phylogenetic analysis demonstrated that two types of CHDs are present only in the Selaginella genome, which puts this species in a unique position among plants. It appears that a transition from CHD_I to CHD_II and further diversification occurred in the evolutionary history of plant LTR retrotransposons at approximately 400 MYA and most probably was associated with the evolution of chromatin organization.

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Evolutionary history of Oryza sativa LTR retrotransposons: a preliminary survey of the rice genome sequences

BMC Genomics ◽

10.1186/1471-2164-5-18 ◽

2004 ◽

Vol 5 (1) ◽

Cited By ~ 45

Author(s):

Lizhi Gao ◽

Eugene M McCarthy ◽

Eric W Ganko ◽

John F McDonald

Keyword(s):

Oryza Sativa ◽

Evolutionary History ◽

Rice Genome ◽

Preliminary Survey ◽

Ltr Retrotransposons ◽

Genome Sequences ◽

History Of

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Evolutionary study of the 412/mdg1 lineage of the Ty3/gypsy group of LTR retrotransposons in Diptera

10.1101/2020.09.24.311225 ◽

2020 ◽

Author(s):

Natasha Avila Bertocchi ◽

Fabiano Pimentel Torres ◽

Maríndia Deprá ◽

Vera Lúcia da Silva Valente

Keyword(s):

Drosophila Melanogaster ◽

Evolutionary History ◽

Ribonuclease H ◽

Tsetse Flies ◽

Ltr Retrotransposon ◽

Ltr Retrotransposons ◽

Long Terminal Repeats ◽

Gypsy Group ◽

History Of ◽

Small Orfs

AbstractLTR-retrotransposons are structurally similar to retroviruses, as they possess the enzymes reverse transcriptase, Ribonuclease H, integrase, proteinase, and the gag gene and are flanked by long terminal repeats (LTRs). The 412/mdg1 lineage, belonging to the Ty3/Gypsy group, consists of the TEs 412, mdg1, stalker, pilgrim, and blood. The 412/mdg1 lineage is distinguished from the others in the gypsy group in that it has small ORFs at the beginning of the TE and is highly similar to the pol ORF among the TEs that make up the lineage. In this study, our aim was to elucidate the evolutionary history of the 412/mdg1 lineage in the 127 dipteran genomes available to date, and the characteristics of the sequences in each genome. We used the canonical TE 412 probe described in Drosophila melanogaster as the query. We found sequences homologous to the 412/mdg1 lineage restricted to the suborder Brachycera. These sequences are widely distributed in drosophilids but are also present in other groups of flies. We note the presence of the 412/mg1 lineage in tsetse flies (Glossina). Furthermore, our results showed an elaborate evolutionary history for the pol ORF in the 412/mdg1 lineage of the LTR-Retrotransposon.

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Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

Behavioral and Brain Sciences ◽

10.1017/s0140525x18000274 ◽

2018 ◽

Vol 41 ◽

Author(s):

Kevin Arceneaux

Keyword(s):

Decision Making ◽

Individual Differences ◽

Cognitive Processes ◽

Evolutionary History ◽

Behavioral Responses ◽

History Of ◽

Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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