Evolution of endogenous non-retroviral genes integrated into plant genomes

Numerous comparative genome analyses have revealed the wide extent of horizontal gene transfer (HGT) in living organisms, which contributes to their evolution and genetic diversity. Viruses play important roles in HGT. Endogenous viral elements (EVEs) are defined as viral DNA sequences present withi...

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Main Authors: Hyosub Chu, Yeonhwa Jo, Won Kyong Cho
Format: Article
Language:English
Published: Elsevier 2014-08-01
Series:Current Plant Biology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S221466281400005X
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author Hyosub Chu
Yeonhwa Jo
Won Kyong Cho
author_facet Hyosub Chu
Yeonhwa Jo
Won Kyong Cho
author_sort Hyosub Chu
collection DOAJ
description Numerous comparative genome analyses have revealed the wide extent of horizontal gene transfer (HGT) in living organisms, which contributes to their evolution and genetic diversity. Viruses play important roles in HGT. Endogenous viral elements (EVEs) are defined as viral DNA sequences present within the genomes of non-viral organisms. In eukaryotic cells, the majority of EVEs are derived from RNA viruses using reverse transcription. In contrast, endogenous non-retroviral elements (ENREs) are poorly studied. However, the increasing availability of genomic data and the rapid development of bioinformatics tools have enabled the identification of several ENREs in various eukaryotic organisms. To date, a small number of ENREs integrated into plant genomes have been identified. Of the known non-retroviruses, most identified ENREs are derived from double-strand (ds) RNA viruses, followed by single-strand (ss) DNA and ssRNA viruses. At least eight virus families have been identified. Of these, viruses in the family Partitiviridae are dominant, followed by viruses of the families Chrysoviridae and Geminiviridae. The identified ENREs have been primarily identified in eudicots, followed by monocots. In this review, we briefly discuss the current view on non-retroviral sequences integrated into plant genomes that are associated with plant-virus evolution and their possible roles in antiviral resistance.
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spelling doaj.art-0fce80094ac54526b827858862dc7d6e2022-12-21T17:32:45ZengElsevierCurrent Plant Biology2214-66282014-08-011C555910.1016/j.cpb.2014.07.002Evolution of endogenous non-retroviral genes integrated into plant genomesHyosub ChuYeonhwa JoWon Kyong ChoNumerous comparative genome analyses have revealed the wide extent of horizontal gene transfer (HGT) in living organisms, which contributes to their evolution and genetic diversity. Viruses play important roles in HGT. Endogenous viral elements (EVEs) are defined as viral DNA sequences present within the genomes of non-viral organisms. In eukaryotic cells, the majority of EVEs are derived from RNA viruses using reverse transcription. In contrast, endogenous non-retroviral elements (ENREs) are poorly studied. However, the increasing availability of genomic data and the rapid development of bioinformatics tools have enabled the identification of several ENREs in various eukaryotic organisms. To date, a small number of ENREs integrated into plant genomes have been identified. Of the known non-retroviruses, most identified ENREs are derived from double-strand (ds) RNA viruses, followed by single-strand (ss) DNA and ssRNA viruses. At least eight virus families have been identified. Of these, viruses in the family Partitiviridae are dominant, followed by viruses of the families Chrysoviridae and Geminiviridae. The identified ENREs have been primarily identified in eudicots, followed by monocots. In this review, we briefly discuss the current view on non-retroviral sequences integrated into plant genomes that are associated with plant-virus evolution and their possible roles in antiviral resistance.http://www.sciencedirect.com/science/article/pii/S221466281400005XEvolutionHorizontal gene transferIntegrationNon-retroviralPlantVirus
spellingShingle Hyosub Chu
Yeonhwa Jo
Won Kyong Cho
Evolution of endogenous non-retroviral genes integrated into plant genomes
Current Plant Biology
Evolution
Horizontal gene transfer
Integration
Non-retroviral
Plant
Virus
title Evolution of endogenous non-retroviral genes integrated into plant genomes
title_full Evolution of endogenous non-retroviral genes integrated into plant genomes
title_fullStr Evolution of endogenous non-retroviral genes integrated into plant genomes
title_full_unstemmed Evolution of endogenous non-retroviral genes integrated into plant genomes
title_short Evolution of endogenous non-retroviral genes integrated into plant genomes
title_sort evolution of endogenous non retroviral genes integrated into plant genomes
topic Evolution
Horizontal gene transfer
Integration
Non-retroviral
Plant
Virus
url http://www.sciencedirect.com/science/article/pii/S221466281400005X
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