Molecular Analysis of the Global Population of Potato Virus S Redefines Its Phylogeny, and Has Crop Biosecurity Implications       
Yazarlar (4)
Doç. Dr. Şerife TOPKAYA Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Ali Çelik
Bolu Abant İzzet Baysal Üniversitesi, Türkiye
Adyatma Irawan Santosa
Universitas Gadjah Mada, Endonezya
Roger A.C. Jones
The University Of Western Australia, Avustralya
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Viruses
Dergi ISSN 1999-4915 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 04-2023
Cilt No 15
Sayı 5
DOI Numarası 10.3390/v15051104
Makale Linki https://www.mdpi.com/1999-4915/15/5/1104
Özet
In 2020, 264 samples were collected from potato fields in the Turkish provinces of Bolu, Afyon, Kayseri and Niğde. RT-PCR tests, with primers which amplified its coat protein (CP), detected potato virus S (PVS) in 35 samples. Complete CP sequences were obtained from 14 samples. Phylogenetic analysis using non-recombinant sequences of (i) the 14 CP's, another 8 from Tokat province and 73 others from GenBank; and (ii) 130 complete ORF, RdRp and TGB sequences from GenBank, found that they fitted within phylogroups, PVS, PVS or PVS. All Turkish CP sequences were in PVS, clustering within five subclades. Subclades 1 and 4 were in three to four provinces, whereas 2, 3 and 5 were in one province each. All four genome regions were under strong negative selection constraints (ω = 0.0603-0.1825). Considerable genetic variation existed amongst PVS and PVS isolates. Three neutrality test methods showed PVS remained balanced whilst PVS and PVS underwent population expansion. The high fixation index values assigned to all PVS, PVS and PVS comparisons supported subdivision into three phylogroups. As it spreads more readily by aphid and contact transmission, and may elicit more severe symptoms in potato, PVS spread constitutes a biosecurity threat for countries still free from it.
Anahtar Kelimeler
potato | PVS | Turkish provinces | phylogeny | molecular characterization | recombination | genetic diversity | population genetics | gene flow | gene transcript analysis | incursions | biosecurity