Geminiviruses: Taxonomic Structure and Diversity in Genomic Organization.

作者: Saurabh Kulshrestha , Abhishek Bhardwaj , Vanshika

DOI: 10.2174/1872208313666191203100851

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摘要: Background Geminiviridae is one of the best-characterized and hence, largest plant-virus families with highest economic importance. Its members characteristically have a circular ssDNA genome within encapsidation twinned quasi-icosaheadral virions (18-38 nm size-range). Objective Construction narrative review on geminiviruses, to clearer picture their genomic structure taxonomic status. Methods A thorough search was conducted for papers patents regarding where relevant information used study organization, diversity structure. Results Geminiviruses been classified into nine genera (viz., genus Begomovirus, Mastrevirus, Curtovirus, Topocuvirus, Becurtovirus, Turncurtovirus, Capulavirus, Eragrovirus Grablovirus) having distinct organizations, host ranges insect vectors. Genomic organization all generally shows presence 4-6 ORFs encoding various proteins. For now, Citrus chlorotic dwarf-associated virus (CCDaV), Camellia (CaCDaV) few other geminiviruses are still unassigned any genera. The monopartite begomoviruses (and mastreviruses) found associated aplhasatellites betasatellites ~1.3 kb satellites). Recent reports suggest that deltasatellites potentially reduce accumulation helper-Begomovirus species in plants. Some revealed methods generate transgenic plants resistant geminiviruses. Conclusion rapidly evolve highly diverse group plant-viruses. However, research has shown new horizons tackling acute begomoviral diseases by generating novel bio-control methodology which can be as agents

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