Login | Request Account (DAF staff only)

Identification and occurrence of the LTR-Copia-like retrotransposon, PSCR and other Copia-like elements in the genome of Phytophthora sojae

Basnayake, S., Maclean, D. J., Whisson, S. C. and Drenth, A. (2009) Identification and occurrence of the LTR-Copia-like retrotransposon, PSCR and other Copia-like elements in the genome of Phytophthora sojae. Current Genetics, 55 (5). pp. 521-536. ISSN 1432-0983

Full text not currently attached. Access may be available via the Publisher's website or OpenAccess link.

Article Link(s): https://doi.org/10.1007/s00294-009-0263-9

Abstract

Sequence analysis of the genomic region of Phytophthora sojae close to the Avr4/6 locus specifying virulence on soybean identified a Ty1/Copia-like retrotransposon that we have named Phytophthora sojaeCopia-like retrotransposon (PSCR). Twelve near-complete homologs of PSCR were found in the published P. sojae genome sequence, none of which encoded a full-length polyprotein characteristic of Copia-like retrotransposons, or appears to exhibit transcriptional activity or show evidence of recent movement, suggesting they are non-functional and unlikely to have caused pathogenic variability. However, reconstructed consensus PSCR sequence encoding a full-length polyprotein resembles a functional, ancestral retroelement within P. sojae. Homologs were also found in sequence databases of other Phytophthora species. Database searches found other families of Copia-like elements in genomes of P. sojae, P. ramorum and P. infestans that were different from members of the PSCR family and from Copia-like elements reported in other organisms. It is possible that the various families of Copia-like retroelements identified in this study represent introgressions into the genome of ancient ancestor(s) of current Phytophthora species, where they have evolved and diverged considerably during the speciation. Some Copia-like families are transcriptionally active with the potential to transpose and contribute to pathogenic variation in current populations of P. sojae.

Item Type:Article
Business groups:Horticulture and Forestry Science
Subjects:Science > Botany > Genetics
Forestry > Research. Experimentation
Deposited On:02 Feb 2022 22:58
Last Modified:02 Feb 2022 22:58

Repository Staff Only: item control page