Multiple homoplasious insertions and deletions of a Triticeae (Poaceae) DNA transposon: a phylogenetic perspective.

ABSTRACT:

Background

Stowaway elements are short, non-autonomous DNA transposons categorized as miniature inverted-repeat transposable elements (MITEs). The high MITE copy number in grass genomes suggests an active history of amplification and insertion, but ongoing MITE activity has only rarely been seen, and ongoing Stowaway activity has never been observed. Thus, a phylogenetic perspective on presence vs. absence of elements in an aligned data set can provide valuable historical insights into the dynamics of MITE acquisition and loss.

Results

A Stowaway-like element resides within the fourth intron of a beta-amylase gene in representatives of five genera in the wheat tribe, Triticeae. Its presence vs. absence was examined with reference to the beta-amylase gene tree topology, and i

SUBMITTER: Mason-Gamer RJ 

PROVIDER: S-EPMC1925063 | biostudies-literature | 2007 Jun

REPOSITORIES: biostudies-literature