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Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs

Broad bean mottle bromovirus infects legume plants and is transmissible by insects. Several broad bean mottle virus (BBMV) isolates have been identified, including one in England (isolate Ba) and five in the Mediterranean countries: Libya (LyV), Morocco (MV), Syria (SV), Sudan (TU) and Tunisia (TV)....

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Autores principales: Shrestha, Nipin, Duvall, Melvin R., Bujarski, Jozef J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9321246/
https://www.ncbi.nlm.nih.gov/pubmed/35890061
http://dx.doi.org/10.3390/pathogens11070817
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author Shrestha, Nipin
Duvall, Melvin R.
Bujarski, Jozef J.
author_facet Shrestha, Nipin
Duvall, Melvin R.
Bujarski, Jozef J.
author_sort Shrestha, Nipin
collection PubMed
description Broad bean mottle bromovirus infects legume plants and is transmissible by insects. Several broad bean mottle virus (BBMV) isolates have been identified, including one in England (isolate Ba) and five in the Mediterranean countries: Libya (LyV), Morocco (MV), Syria (SV), Sudan (TU) and Tunisia (TV). Previously, we analyzed the nucleotide sequence of the Ba RNA and here we report on and compare it with another five Mediterranean variants. The RNA segments in the latter ones were extensively homologous, with some SNPs, single nucleotide deletions and insertions, while the number of mutations was higher in isolate Ba. Both the 5′ and 3′ untranslated terminal regions (UTRs) among the corresponding RNAs are highly conserved, reflecting their functionality in virus replication. The AUG initiation codons are within suboptimal contexts, possibly to adjust/regulate translation. The proteins 1a, 2a, 3a and coat protein (CP) are almost identical among the five isolates, but in Ba they have more amino acid (aa) substitutions. Phylogenetic analysis revealed the isolates from Morocco and Syria clustering with the isolate from England, while the variants from Libya, Tunisia and Sudan created a different clade. The BBMV isolates encapsidate a high content of host (ribosomal and messenger) RNAs. Our studies present BBMV as a useful model for bromoviruses infecting legumes.
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spelling pubmed-93212462022-07-27 Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs Shrestha, Nipin Duvall, Melvin R. Bujarski, Jozef J. Pathogens Article Broad bean mottle bromovirus infects legume plants and is transmissible by insects. Several broad bean mottle virus (BBMV) isolates have been identified, including one in England (isolate Ba) and five in the Mediterranean countries: Libya (LyV), Morocco (MV), Syria (SV), Sudan (TU) and Tunisia (TV). Previously, we analyzed the nucleotide sequence of the Ba RNA and here we report on and compare it with another five Mediterranean variants. The RNA segments in the latter ones were extensively homologous, with some SNPs, single nucleotide deletions and insertions, while the number of mutations was higher in isolate Ba. Both the 5′ and 3′ untranslated terminal regions (UTRs) among the corresponding RNAs are highly conserved, reflecting their functionality in virus replication. The AUG initiation codons are within suboptimal contexts, possibly to adjust/regulate translation. The proteins 1a, 2a, 3a and coat protein (CP) are almost identical among the five isolates, but in Ba they have more amino acid (aa) substitutions. Phylogenetic analysis revealed the isolates from Morocco and Syria clustering with the isolate from England, while the variants from Libya, Tunisia and Sudan created a different clade. The BBMV isolates encapsidate a high content of host (ribosomal and messenger) RNAs. Our studies present BBMV as a useful model for bromoviruses infecting legumes. MDPI 2022-07-21 /pmc/articles/PMC9321246/ /pubmed/35890061 http://dx.doi.org/10.3390/pathogens11070817 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shrestha, Nipin
Duvall, Melvin R.
Bujarski, Jozef J.
Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs
title Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs
title_full Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs
title_fullStr Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs
title_full_unstemmed Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs
title_short Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs
title_sort variability among the isolates of broad bean mottle virus and encapsidation of host rnas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9321246/
https://www.ncbi.nlm.nih.gov/pubmed/35890061
http://dx.doi.org/10.3390/pathogens11070817
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