Molecular evolution of magellan, a maize Ty3/gypsy-like retrotransposon.
AUTOR(ES)
Purugganan, M D
RESUMO
The magellan transposable element is responsible for a spontaneous 5.7-kb insertion in the maize wx-M allele. This element has the sequence and structural characteristics of a Ty3/gypsy-like retrotransposon. The magellan element is present in all Zea species and Tripsacum andersonii; it is absent, however, in the genomes of all other Tripsacum species analyzed. The genetic distances between magellan elements suggest that this retrotransposon is evolving faster than other Zea nuclear loci. The phylogeny of magellan within Zea and T. andersonii also reveals a pattern of interspecies transfers, resulting in the movement of magellan subfamilies between different species genomes. Interspecific hybridization may be a major mechanism by which this retrotransposon invades and establishes itself in new taxa.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=45294Documentos Relacionados
- Distribution of a Ty3/gypsy-like retroelement on the A and B-chromosomes of Cestrum strigilatum Ruiz & Pav. and Cestrum intermedium Sendtn. (Solanaceae)
- Plant retrotransposon from Lilium henryi is related to Ty3 of yeast and the gypsy group of Drosophila.
- Modular Evolution of the Integrase Domain in the Ty3/Gypsy Class of LTR Retrotransposons
- Pyret, a Ty3/Gypsy retrotransposon in Magnaporthe grisea contains an extra domain between the nucleocapsid and protease domains
- Extended interactions between the primer tRNAi(Met) and genomic RNA of the yeast Ty1 retrotransposon.