Large distribution and high sequence identity of a Copia-type retrotransposon in angiosperm families
Nenhuma Miniatura disponível
Data
2015
Autores
Dias, Elaine Silva
Hatt, Clémence
Hamon, Serge
Hamon, Perla
Rigoreau, Michel
Crouzillat, Dominique
Carareto, Claudia Marcia Aparecida [UNESP]
de Kochko, Alexandre
Guyot, Romain
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
Retrotransposons are the main component of plant genomes. Recent studies have revealed the complexity of their evolutionary dynamics. Here, we have identified Copia25 in Coffea canephora, a new plant retrotransposon belonging to the Ty1-Copia superfamily. In the Coffea genomes analyzed, Copia25 is present in relatively low copy numbers and transcribed. Similarity sequence searches and PCR analyses show that this retrotransposon with LTRs (Long Terminal Repeats) is widely distributed among the Rubiaceae family and that it is also present in other distantly related species belonging to Asterids, Rosids and monocots. A particular situation is the high sequence identity found between the Copia25 sequences of Musa, a monocot, and Ixora, a dicot species (Rubiaceae). Our results reveal the complexity of the evolutionary dynamics of the ancient element Copia25 in angiosperm, involving several processes including sequence conservation, rapid turnover, stochastic losses and horizontal transfer.
Descrição
Palavras-chave
Copia25, Genome dynamics, Horizontal transfer, Rubiaceae, Sequence conservation, Transposable element
Como citar
Plant Molecular Biology, v. 89, n. 1-2, p. 83-97, 2015.