Linked Life Data

17008031

Source:http://linkedlifedata.com/resource/pubmed/id/17008031

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2006-12-25
pubmed:abstractText
We present the first study on the diversity and evolution of Ty1-copia and Ty3-gypsy retroelements in a group of non-photosynthetic flowering plants. To this end partial sequences of the reverse transcriptase (rt) gene were obtained from 20 clones for each retroelement type from seven and six accessions of Orobanche and Phelipanche (Orobanchaceae), respectively. Overall sequence similarity is higher in Ty3-gypsy elements than in Ty1-copia elements in agreement with the results from other angiosperm groups. Higher sequence diversity and stronger phylogenetic structure, especially of Ty1-copia sequences, in Orobanche species compared to Phelipanche species support the previously suggested hypothesis (based on karyological and cytological data) that genomes of Orobanche species are more dynamic than those of Phelipanche species. No evidence was found for intraspecific differences of retroelement diversity nor for differences between pest taxa and their putative wild relatives, e.g., O. crenata and O. owerini. The occurrence of a few sequences from Phelipanche species in clades otherwise comprising sequences from Orobanche species might be due to horizontal gene transfer, but the alternative of vertical transmission cannot be rejected unambiguously.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
387
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
75-86
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Diversity and evolution of Ty1-copia and Ty3-gypsy retroelements in the non-photosynthetic flowering plants Orobanche and Phelipanche (Orobanchaceae).
pubmed:affiliation
Department of Systematic and Evolutionary Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't