Evolutionary rates and genetic diversities of mixed potyviruses in Narcissus
| Autor: | Yuki Honda, Rei Nomiyama, Kenta Tomimura, Shinichiro Mitoma, Kazusato Ohshima, Ryosuke Yasaka |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Microbiology (medical) Macluravirus food.ingredient viruses Potyvirus Biology Narcissus yellow stripe virus medicine.disease_cause 01 natural sciences Microbiology Evolution Molecular 03 medical and health sciences food Narcissus latent virus Genetics medicine Narcissus tazetta Molecular Biology Ecology Evolution Behavior and Systematics Phylogeny Plant Diseases Potyviridae Genetic Variation Narcissus biology.organism_classification Virology 030104 developmental biology Infectious Diseases Narcissus degeneration virus RNA Viral Narcissus late season yellows virus 010606 plant biology & botany |
| Zdroj: | Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases. 45 |
| ISSN: | 1567-7257 |
| Popis: | There is no attempt to evaluate evolutionary rates, timescales and diversities of viruses collected from mixedly infected hosts in nature. Plants of the genus Narcissus are a monocotyledon and are susceptible to several viruses. In this study, narcissus plants (Narcissus tazetta var. chinensis) showing mosaic or striping leaves were collected in Japan, and these were investigated for potyvirus infections using potyvirus-specific primers. Individual narcissus plants were found frequently to be mixedly infected with different potyviruses, different isolates and quasispecies of same virus. The viruses were potyviruses and a macluravirus in the family Potyviridae, namely Narcissus late season yellows virus (NLSYV), Narcissus yellow stripe virus (NYSV), Narcissus degeneration virus (NDV), Cyrtanthus elatus virus A (CyEVA) and Narcissus latent virus (NLV). Genetic diversities of coat protein coding region of different virus species were different; NYSV and CyEVA were most diverse whereas NDV was least. Evolutionary rates of all five narcissus viruses were 1.33-7.15×10-3nt/site/year and were similar. The most recent common ancestors (TMRCAs) varied between virus species; NYSV and CyEVA were the oldest whereas NDV was the youngest. Thus, the oldness of TMRCAs of the viruses correlated well with the greatness of nucleotide diversities. |
| Databáze: | OpenAIRE |
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