ArticleIranian journal of biotechnology2020
Identification of Subgenomic DNAs Associated with
Article in Iranian journal of biotechnology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
background
objectivesThis study was aimed to amplify, sequence and describe subgenomic DNAs (sgDNAs) associated with WDV infection among wheat and barley plants. The nucleotide sequence of sgDNAs were then compared to that of parental genomic DNAs (gDNAs) and the differences were shown. MATERIALS AND
methodsA total of 65 symptomatic plants were surveyed for WDV infection using double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) and polymerase chain reaction (PCR). Rolling circle amplification followed by restriction analysis (RCA-RA) was applied to identify both gDNAs and sgDNAs in the infected wheat and barley plants. Nucleotide sequence of eight full-length WDV genomes and five sgDNAs were determined.
resultsGenomic sequences of WDV-Wheat and WDV-Barley isolates obtained in this study were identified as WDV-F and WDV-B, respectively, forming a separate cluster in the phylogenetic tree with the highest bootstrap support (100%). Sequence analysis of sgDNA molecules revealed that they have undergone different mutation events including deletions in viral genes, duplication of coding regions, and insertion of host-derived sequences.
conclusionsThe association of different types of sgDNAs were found in WDV-infected wheat and barley plants. The sgDNAs exhibited remarkable changes compared to their parental molecules and they might play a role in symptom severity, host genome evolution and emergence of new virus variants/species.
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