Journal: | Genetics and molecular biology |
Database: | PERIÓDICA |
System number: | 000408466 |
ISSN: | 1415-4757 |
Authors: | Marcon, Helena Sanches1 Costa-Silva, Juliana2 Lorenzetti, Alan Pericles Rodrigues3 Marino, Celso Luis1 Domingues, Douglas Silva1 |
Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Biociencias, Rio Claro, Sao Paulo. Brasil 2Universidade Tecnologica Federal do Parana, Programa de Pos-Graduacao em Bioinformatica, Cornelio Procopio, Parana. Brasil 3Universidade Estadual de Londrina, Programa de Pos-Graduacao em Genetica e Biologia Molecular, Londrina, Parana. Brasil |
Year: | 2017 |
Volumen: | 40 |
Pages: | 217-225 |
Country: | Brasil |
Language: | Inglés |
Document type: | Artículo |
Approach: | Experimental, aplicado |
English abstract | Endogenous viral elements (EVEs) are the result of heritable horizontal gene transfer from viruses to hosts. In the last years, several EVE integration events were reported in plants by the exponential availability of sequenced genomes. Eucalyptus grandis is a forest tree species with a sequenced genome that is poorly studied in terms of evolution and mobile genetic elements composition. Here we report the characterization of E. grandis endogenous viral element 1 (EgEVE_1), a transcriptionally active EVE with a size of 5,664 bp. Phylogenetic analysis and genomic distribution demonstrated that EgEVE_1 is a newly described member of the Caulimoviridae family, distinct from the recently characterized plant Florendoviruses. Genomic distribution of EgEVE_1 and Florendovirus is also distinct. EgEVE_1 qPCR quantification in Eucalyptus urophylla suggests that this genome has more EgEVE_1 copies than E. grandis. EgEVE_1 transcriptional activity was demonstrated by RT-qPCR in five Eucalyptus species and one intrageneric hybrid. We also identified that Eucalyptus EVEs can generate small RNAs (sRNAs),that might be involved in de novo DNA methylation and virus resistance. Our data suggest that EVE families in Eucalyptus have distinct properties, and we provide the first comparative analysis of EVEs in Eucalyptus genomes |
Disciplines: | Biología |
Keyword: | Botánica, Fisiología vegetal, Genética, Virus, Biología molecular, Elementos virales endógenos, Inserción genómica, Pararretrovirus, Caulimovirus, Eucalipto |
Keyword: | Biology, Botany, Genetics, Plant physiology, Virus, Molecular biology, Endogenous viral elements, Genomic insertion, Pararetrovirus, Caulimovirus, Eucalyptus |
Full text: | Texto completo (Ver HTML) |