The Incidence and Genetic Diversity of Potato virus S in Serbian Seed Potato Crops

• Published in: Potato research Vol. 62; no. 1; pp. 31 - 46
• Main Authors: Ristić, Danijela, Vučurović, Ivan, Kuzmanović, Slobodan, Pfaf-Dolovac, Erika, Aleksić, Goran, Vučurović, Ana, Starović, Mira
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-03-2019; Springer; Springer Nature B.V
• Subjects: Agriculture; Analysis; Biological diversity; Biomedical and Life Sciences; Cultivars; Genetic diversity; Genetic research; Incidence; International economic relations; Lesions; Life Sciences; Molecular chains; Plant Genetics and Genomics; Plant Sciences; Plant Systematics/Taxonomy/Biogeography; Potatoes; Quinoa; Seed industry; Seeds; Statistical analysis; Subgroups; Vegetable industry; Vegetables; Viruses; Serbia; Phylogenetic analysis; PVS incidence; Potato
• ISSN: 0014-3065; 1871-4528
• DOI: 10.1007/s11540-018-9395-y

It is essential that certified potatoes are free from known viruses which can negatively affect quality and yield. However, very little is known about the distribution and frequency of
Potato virus S
(PVS) in Serbia. Until 2014, PVS was present sporadically in the domestic seed potato production. The incidence of PVS was studied by a molecular method over 3 years (2014–2016) in four important potato-growing regions (Moravički, Zlatiborski, Raški and Mačvanski) and in different cultivars. The results showed that the incidence of PVS increased steadily over 3 years from 1.52 to 8.84%. The Moravički region had the highest incidence (13.06%) and Desiree was the most susceptible cultivar with a mean PVS incidence of 8.2% followed by Marabel and Riviera. The highest significant statistical difference was between the cultivars and in the interaction between cultivars and regions. A detailed phylogenic analysis of the tested isolates confirmed that Serbian PVS belongs to PVS
O
. Of the 18 Serbian PVS isolates included in this study, eight were grouped into the PVS
O
cluster and formed a subgroup (O-I) with isolates from the USA, Syria, Korea and Chile. Ten Serbian isolates of PVS together with the isolates from Iran were clustered in a branch of subgroup O-VII. This study constitutes the first report of PVS isolates in Serbia which are capable of infecting
Chenopodium quinoa
and inducing the symptoms of local chlorotic lesions.