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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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Pathogens |
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| Online Access: | https://www.mdpi.com/2076-0817/11/7/817 |
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| author | Nipin Shrestha Melvin R. Duvall Jozef J. Bujarski |
| author_facet | Nipin Shrestha Melvin R. Duvall Jozef J. Bujarski |
| author_sort | Nipin Shrestha |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T10:13:46Z |
| format | Article |
| id | doaj.art-bd7dd74f74f9479481da1bc6ce315313 |
| institution | Directory Open Access Journal |
| issn | 2076-0817 |
| language | English |
| last_indexed | 2024-03-09T10:13:46Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Pathogens |
| spelling | doaj.art-bd7dd74f74f9479481da1bc6ce3153132023-12-01T22:32:59ZengMDPI AGPathogens2076-08172022-07-0111781710.3390/pathogens11070817Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAsNipin Shrestha0Melvin R. Duvall1Jozef J. Bujarski2Department of Biological Sciences and Plant Molecular and Bioinformatics Center, Northern Illinois University, DeKalb, IL 60115, USADepartment of Biological Sciences and Plant Molecular and Bioinformatics Center, Northern Illinois University, DeKalb, IL 60115, USADepartment of Biological Sciences and Plant Molecular and Bioinformatics Center, Northern Illinois University, DeKalb, IL 60115, USABroad 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.https://www.mdpi.com/2076-0817/11/7/817plant RNA virusesbromovirusesRNA genome variabilitycellular RNA encapsidationphylogeny |
| spellingShingle | Nipin Shrestha Melvin R. Duvall Jozef J. Bujarski Variability among the Isolates of Broad Bean Mottle Virus and Encapsidation of Host RNAs Pathogens plant RNA viruses bromoviruses RNA genome variability cellular RNA encapsidation phylogeny |
| 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 | plant RNA viruses bromoviruses RNA genome variability cellular RNA encapsidation phylogeny |
| url | https://www.mdpi.com/2076-0817/11/7/817 |
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