Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.

Non-retroviral RNA virus sequences (NRVSs) have been found in the chromosomes of vertebrates and fungi, but not plants. Here we report similarly endogenized NRVSs derived from plus-, negative-, and double-stranded RNA viruses in plant chromosomes. These sequences were found by searching public genom...

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Autores principales: Sotaro Chiba, Hideki Kondo, Akio Tani, Daisuke Saisho, Wataru Sakamoto, Satoko Kanematsu, Nobuhiro Suzuki
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spelling oai:doaj.org-article:930902c5ef3f40eeaa22cbccdda9d8562021-11-18T06:03:12ZWidespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.1553-73661553-737410.1371/journal.ppat.1002146https://doaj.org/article/930902c5ef3f40eeaa22cbccdda9d8562011-07-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21779172/pdf/?tool=EBIhttps://doaj.org/toc/1553-7366https://doaj.org/toc/1553-7374Non-retroviral RNA virus sequences (NRVSs) have been found in the chromosomes of vertebrates and fungi, but not plants. Here we report similarly endogenized NRVSs derived from plus-, negative-, and double-stranded RNA viruses in plant chromosomes. These sequences were found by searching public genomic sequence databases, and, importantly, most NRVSs were subsequently detected by direct molecular analyses of plant DNAs. The most widespread NRVSs were related to the coat protein (CP) genes of the family Partitiviridae which have bisegmented dsRNA genomes, and included plant- and fungus-infecting members. The CP of a novel fungal virus (Rosellinia necatrix partitivirus 2, RnPV2) had the greatest sequence similarity to Arabidopsis thaliana ILR2, which is thought to regulate the activities of the phytohormone auxin, indole-3-acetic acid (IAA). Furthermore, partitivirus CP-like sequences much more closely related to plant partitiviruses than to RnPV2 were identified in a wide range of plant species. In addition, the nucleocapsid protein genes of cytorhabdoviruses and varicosaviruses were found in species of over 9 plant families, including Brassicaceae and Solanaceae. A replicase-like sequence of a betaflexivirus was identified in the cucumber genome. The pattern of occurrence of NRVSs and the phylogenetic analyses of NRVSs and related viruses indicate that multiple independent integrations into many plant lineages may have occurred. For example, one of the NRVSs was retained in Ar. thaliana but not in Ar. lyrata or other related Camelina species, whereas another NRVS displayed the reverse pattern. Our study has shown that single- and double-stranded RNA viral sequences are widespread in plant genomes, and shows the potential of genome integrated NRVSs to contribute to resolve unclear phylogenetic relationships of plant species.Sotaro ChibaHideki KondoAkio TaniDaisuke SaishoWataru SakamotoSatoko KanematsuNobuhiro SuzukiPublic Library of Science (PLoS)articleImmunologic diseases. AllergyRC581-607Biology (General)QH301-705.5ENPLoS Pathogens, Vol 7, Iss 7, p e1002146 (2011)
institution DOAJ
collection DOAJ
language EN
topic Immunologic diseases. Allergy
RC581-607
Biology (General)
QH301-705.5
spellingShingle Immunologic diseases. Allergy
RC581-607
Biology (General)
QH301-705.5
Sotaro Chiba
Hideki Kondo
Akio Tani
Daisuke Saisho
Wataru Sakamoto
Satoko Kanematsu
Nobuhiro Suzuki
Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.
description Non-retroviral RNA virus sequences (NRVSs) have been found in the chromosomes of vertebrates and fungi, but not plants. Here we report similarly endogenized NRVSs derived from plus-, negative-, and double-stranded RNA viruses in plant chromosomes. These sequences were found by searching public genomic sequence databases, and, importantly, most NRVSs were subsequently detected by direct molecular analyses of plant DNAs. The most widespread NRVSs were related to the coat protein (CP) genes of the family Partitiviridae which have bisegmented dsRNA genomes, and included plant- and fungus-infecting members. The CP of a novel fungal virus (Rosellinia necatrix partitivirus 2, RnPV2) had the greatest sequence similarity to Arabidopsis thaliana ILR2, which is thought to regulate the activities of the phytohormone auxin, indole-3-acetic acid (IAA). Furthermore, partitivirus CP-like sequences much more closely related to plant partitiviruses than to RnPV2 were identified in a wide range of plant species. In addition, the nucleocapsid protein genes of cytorhabdoviruses and varicosaviruses were found in species of over 9 plant families, including Brassicaceae and Solanaceae. A replicase-like sequence of a betaflexivirus was identified in the cucumber genome. The pattern of occurrence of NRVSs and the phylogenetic analyses of NRVSs and related viruses indicate that multiple independent integrations into many plant lineages may have occurred. For example, one of the NRVSs was retained in Ar. thaliana but not in Ar. lyrata or other related Camelina species, whereas another NRVS displayed the reverse pattern. Our study has shown that single- and double-stranded RNA viral sequences are widespread in plant genomes, and shows the potential of genome integrated NRVSs to contribute to resolve unclear phylogenetic relationships of plant species.
format article
author Sotaro Chiba
Hideki Kondo
Akio Tani
Daisuke Saisho
Wataru Sakamoto
Satoko Kanematsu
Nobuhiro Suzuki
author_facet Sotaro Chiba
Hideki Kondo
Akio Tani
Daisuke Saisho
Wataru Sakamoto
Satoko Kanematsu
Nobuhiro Suzuki
author_sort Sotaro Chiba
title Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.
title_short Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.
title_full Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.
title_fullStr Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.
title_full_unstemmed Widespread endogenization of genome sequences of non-retroviral RNA viruses into plant genomes.
title_sort widespread endogenization of genome sequences of non-retroviral rna viruses into plant genomes.
publisher Public Library of Science (PLoS)
publishDate 2011
url https://doaj.org/article/930902c5ef3f40eeaa22cbccdda9d856
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