Abstract:
BACKGROUND:Transposable elements are selfish genetic sequences which only occasionally provide useful functions to their host species. In addition, models of mobile element evolution assume a second type of selfishness: elements of different families do not cooperate, but they independently fight for their survival in the host genome. RESULTS:We show that recombination events among distantly related Athila retrotransposons have led to the generation of new Athila lineages. Their pattern of diversification suggests that Athila elements survive in Arabidopsis by a combination of selfish replication and of amplification of highly diverged copies with coding potential. Many Athila elements are non-autonomous but still conserve intact open reading frames which are under the effect of negative, purifying natural selection. CONCLUSION:The evolution of these mobile elements is far more complex than hitherto assumed. Strict selfish replication does not explain all the patterns observed.
journal_name
BMC Genomicsjournal_title
BMC genomicsauthors
Marco A,Marín Idoi
10.1186/1471-2164-9-219subject
Has Abstractpub_date
2008-05-14 00:00:00pages
219issn
1471-2164pii
1471-2164-9-219journal_volume
9pub_type
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