Document Detail

Characterization and evolution of mariner elements from closely related species of fruit flies (Diptera: Tephritidae).
MedLine Citation:
PMID:  9493354     Owner:  NLM     Status:  MEDLINE    
Mariner elements were amplified using the polymerase chain reaction from two species of tephritid flies, Ceratitis rosa and Trirhithrum coffeae. The sequences were approximately 1.3 kb in length. None of these elements appeared to be functional, as in every case the open reading frame (ORF) was disrupted by the presence of frameshifts or stop codons. These elements, Crmar1 and Tcmar1, are very similar to the Ccmar1 element previously amplified from the closely related tephritid species C. capitata and are members of the mellifera subfamily of mariner elements. The phylogeny and pattern of divergence of these elements were examined in relation to the phylogeny of the host species. It is highly probable that the elements were present in the ancestral lineage prior to the divergence of the three species. The copy numbers of the elements within each species are very different, ranging from about 10 in T. coffeae to 5,000 in C. rosa. The possible mechanisms which determine the copy number of an element in the host genome are discussed.
C Torti; L M Gomulski; A R Malacrida; P Capy; G Gasperi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of molecular evolution     Volume:  46     ISSN:  0022-2844     ISO Abbreviation:  J. Mol. Evol.     Publication Date:  1998 Mar 
Date Detail:
Created Date:  1998-03-26     Completed Date:  1998-03-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0360051     Medline TA:  J Mol Evol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  288-98     Citation Subset:  IM    
Department of Animal Biology, University of Pavia, Italy.
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MeSH Terms
Amino Acid Sequence
Diptera / classification,  genetics*
Evolution, Molecular*
Molecular Sequence Data
Open Reading Frames
Sequence Homology, Amino Acid
Transposases / genetics*
Reg. No./Substance:
EC 2.7.7.-/Transposases

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