ArticlePlant molecular biology2003
Highly abundant pea LTR retrotransposon Ogre is constitutively transcribed and partially spliced.
Article in Plant molecular biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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50 citing papers in PubMed, 109 citations in OpenAlex.
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- Genome-wide analysis of LTR-retrotransposon diversity and its impact on the evolution of the genus Helianthus (L.).BMC genomics · 2017Article
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- Discovery of a Novel er1 Allele Conferring Powdery Mildew Resistance in Chinese Pea (Pisum sativum L.) Landraces.PloS one · 2016Article
- Repetitive DNA and Plant Domestication: Variation in Copy Number and Proximity to Genes of LTR-Retrotransposons among Wild and Cultivated Sunflower (Helianthus annuus) Genotypes.Genome biology and evolution · 2015Article
- A transposable element insertion in the susceptibility gene CsaMLO8 results in hypocotyl resistance to powdery mildew in cucumber.BMC plant biology · 2015Article
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- Abundance, distribution and potential impact of transposable elements in the genome of Mycosphaerella fijiensis.BMC genomics · 2012Article
- The B gene of pea encodes a defective flavonoid 3',5'-hydroxylase, and confers pink flower color.Plant physiology · 2012Article
- A novel family of terminal-repeat retrotransposon in miniature (TRIM) in the genome of the red harvester ant, Pogonomyrmex barbatus.PloS one · 2012Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We have isolated and characterized a novel giant retroelement, named Ogre, which is over 22 kb long and makes up at least 5% of the pea (Pisum sativum L.) genome. This element can be classified as a Ty3/gypsy-like LTR retrotransposon based on the presence of long terminal repeats (LTRs) and the order of the domains coding for typical retrotransposon proteins. In addition to its extreme length, it has several features which make it unique among the retroelements described so far: (1) the sequences coding for gag and prot proteins are separated from the rt/rh-int domains by several stop codons; (2) the region containing these stop codons is removed from the element transcripts by splicing which results in reconstitution of the complete gag-pol coding sequence; (3) only a part of the transcripts is spliced which probably determines the ratio of translated proteins; (4) the element contains an extra ORF located upstream the gag-pol coding sequences, potentially coding for a protein of 546-562 amino acids with unknown function. The transcriptional activity of the Ogre elements has been detected in all organs tested (leaves, roots, flowers) as well as in wounded leaves and protoplasts. Considering this retroelement's constitutive expression and observed high mutual similarity of the element genomic sequences, it is possible to speculate about its recent amplification in the genomes of pea and other legume plants.
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