Apple mosaic virus (ApMV) is a widespread ssRNA virus which infects diverse species of Rosales. The phylogenetic analysis of complete capsid protein gene of the largest set of ApMV isolates discriminated two main clusters of isolates: one cluster correlates with Maloideae hosts and Trebouxia lichen algae hosts; a second with hop, Prunus, and other woody tree hosts. No correlation was found between clusters and geographic origin of virus isolates, and positive selection hypothesis in distinct hosts was not confirmed: in all virus populations, purifying selection had occurred. GGT→AAT substitution resulted in Gly→Asn change inside the zinc-finger motif in the capsid protein was revealed specific for discrimination of the clusters and we hypothesise that could influence the host preference.
- MeSH
- fylogeneze MeSH
- genetická variace * MeSH
- hostitelská specificita * MeSH
- Ilarvirus klasifikace genetika izolace a purifikace fyziologie MeSH
- Malus virologie MeSH
- molekulární sekvence - údaje MeSH
- nemoci rostlin virologie MeSH
- sekvence aminokyselin MeSH
- virové plášťové proteiny genetika MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
A quantitative PCR, real-time RT-PCR, and one-step real-time RT-PCR using SYBR Green-based tools for reliable detection and relative quantitation of Prune dwarf virus (PDV) in stone fruits are described. The assay reliability was tested on 55 samples from different hosts and regions. The sensitivity of the assay was also compared with other assays with different primers. Two plant-expressed genes, actin and 18S rRNA, were used as housekeeping genes for accurate quantitation of PDV in stone fruit trees. The expression of the gene for actin and the 18S ribosomal RNA gene corresponded with each other accurately, with standard deviation values of 1.905 cycles on average, 1.36 for Prunus persica, and 2.45 for other Prunus species tested. The results of this study support the need to use more than one housekeeping gene as an internal control to avoid possible errors caused by unstable internal control gene mRNA expression when quantifying the extent of PDV infection.
- MeSH
- aktiny genetika MeSH
- barvení a značení metody MeSH
- fluorescenční barviva MeSH
- Ilarvirus genetika izolace a purifikace MeSH
- organické látky MeSH
- polymerázová řetězová reakce s reverzní transkripcí metody normy MeSH
- referenční standardy MeSH
- RNA ribozomální 18S genetika MeSH
- RNA rostlin genetika MeSH
- RNA virová genetika MeSH
- rostlinné proteiny genetika MeSH
- slivoň virologie MeSH
- virová nálož MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
