scholarly journals Planting a Problem: Examining the Spread of Seed-Borne Potato Virus Y

Plant Disease ◽  
2019 ◽  
Vol 103 (9) ◽  
pp. 2179-2183 ◽  
Author(s):  
Jeremy Rosenman ◽  
Christopher S. McIntosh ◽  
Giri Raj Aryal ◽  
Phil Nolte
Keyword(s):  
Seed Potato ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Ordinary Least Squares ◽  
Regression Analyses ◽  
Infected Seed ◽  
Commercial Potato ◽  
Management Area ◽  
Potato Pathogens ◽  
Least Squares Techniques

Potato virus Y (PVY) is among the most economically impactful potato pathogens, yet the spread of PVY from infected seed potatoes within commercial potato fields has not been adequately studied. Test lots containing various seed-borne PVY levels were created by mixing different proportions of seed pieces from healthy and infected tubers drawn from the same seed source. These seed lots were planted in commercial potato fields near the Teton Seed Potato Management Area from 2010 to 2012. Regression analyses on data from these test plots produced models of the in-season spread of PVY originating from infected seed. Conventional ordinary least squares techniques were supplemented with the use of quantile regression; the resulting models indicate the significance of seed-borne PVY on end-of-season infection levels and highlight the need of seed potato buyers to review postharvest testing results.

EVALUATION OF COMMERCIAL POTATO CULTIVARS FOR RESISTANCE TO THE TUBER NECROTIC STRAIN OF POTATO VIRUS Y

2013 ◽  
pp. 255-260
Author(s):  
M. Cloete ◽  
K. Mabasa ◽  
J. Mulabisana ◽  
A. Visser ◽  
J. Rakuambo ◽  
...  
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Potato Cultivars ◽  
Commercial Potato

Comparison of Straw Mulch, Insecticides, Mineral Oil, and Birch Extract for Control of Transmission of Potato virus Y in Seed Potato Crops

2014 ◽  
Vol 57 (1) ◽  
pp. 59-75 ◽  
Author(s):  
S. M. Kirchner ◽  
L. H. Hiltunen ◽  
J. Santala ◽  
T. F. Döring ◽  
J. Ketola ◽  
...  
Keyword(s):  
Seed Potato ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Mineral Oil ◽  
Straw Mulch ◽  
Potato Crops

scholarly journals Molecular Characterization of Recombinant Strains of Potato virus Y From Saudi Arabia

Plant Disease ◽  
2016 ◽  
Vol 100 (2) ◽  
pp. 292-297 ◽  
Author(s):  
Mohamad Chikh-Ali ◽  
Hayam Alruwaili ◽  
Dalton Vander Pol ◽  
Alexander V. Karasev
Keyword(s):  
United States ◽  
Saudi Arabia ◽  
Seed Potato ◽  
Potato Virus ◽  
Potato Virus Y ◽  
The United States ◽  
Tuber Quality ◽  
Rt Pcr ◽  
First Report ◽  
Recombinant Strains

Potato virus Y (PVY) exists as a complex of strains, many of which are recombinants. The practical importance of PVY recombinant strains has increased due to their ability to induce potato tuber necrotic ring spot disease (PTNRD) that seriously affects tuber quality. In Saudi Arabia, potato production has increased fivefold during the last three decades, reaching 460,000 tons per year. Although PVY has been reported as one of the main viruses affecting potatoes, no information is available on PVY strains circulating in the country. In August 2014, a survey was conducted in a seed potato field at Al-Jouf, Saudi Arabia. PVY-positive samples selected based on visual symptoms and serological reactivity were subjected to strain typing using multiplex RT-PCR assays and were determined to represent recombinant PVY strains. Whole genome sequences were determined for two representative isolates, S2 and S9, through direct sequencing of a series of overlapping RT-PCR fragments for each isolate, and found to represent strains PVY-NE11 and PVYZ (SYR-III), respectively. One of the recombinant types, SYR-III, was previously found in nearby Syria and Jordan, but the second recombinant, PVY-NE11, was found before only in the United States. Both recombinants, PVY-NE11 and SYR-III, were previously found associated with PTNRD and thought to be rare. The current identification of PVY-NE11 and SYR-III in seed potato in a new geographic region suggests that these recombinants may not be as rare as previously believed. This is the first report on the occurrence of recombinant strains of PVY in potato in Saudi Arabia, and the first report on the PVY-NE11 strain of PVY found in potato outside of the United States.

scholarly journals The effects of monitoring the abundance and species composition of aphids as virus vectors on seed potato production in Serbia

2014 ◽  
Vol 29 (1) ◽  
pp. 9-19 ◽  
Author(s):  
Drago Milosevic ◽  
Slobodan Milenkovic ◽  
Pantelija Peric ◽  
Svetomir Stamenkovic
Keyword(s):  
Species Composition ◽  
Seed Potato ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Potato Production ◽  
Control Measures ◽  
Seed Potato Production ◽  
Potato Viruses ◽  
Plant Infection ◽  
Haulm Destruction

Aphids are the most important vectors of potato viruses during the crop?s growing season. The most widespread and damaging viruses, the potato virus Y and potato leaf roll virus, are transmitted by aphids in non-persistent and persistent manner, respectively. The two viruses cause the greatest concern of potato producers and a great constraint to seed potato production in Serbia, the region and across the world. Potato virus Y is particularly harmful, given its distribution and spreading rate. Seed potato production systems under well-managed conditions involve a series of virus control measures, including the monitoring of outbreaks of winged aphids, their abundance and species composition, in order to forecast virosis, i.e. potential plant and tuber infection periods. Monitoring the aphid vectors of potato viruses enables determination of optimum dates for haulm destruction when higher than normal numbers of winged aphids as vectors of economically harmful diseases have been observed. Haulm destruction in a potato crop reduces the risk of plant infection and virus translocation from the aboveground parts to tubers, thus keeping the proportion of infected tubers within tolerance limits allowed for certain categories of seed potatoes. This practice has positive effects if used in combination with other viral disease control measures; otherwise, it becomes ineffective. This paper provides an integral analysis of the effects and role of monitoring outbreaks of aphids, their abundance and species composition in timing haulm growth termination to prevent plant infection, virus translocation and tuber infestation in potato crops in Serbia and the wider region.

Crop borders reduce potato virus Y incidence in seed potato

1996 ◽  
Vol 129 (2) ◽  
pp. 289-302 ◽  
Author(s):  
C D DIFONZO ◽  
D W RAGSDALE ◽  
E B RADCLIFFE ◽  
N C GUDMESTAD ◽  
G A SECOR
Keyword(s):  
Seed Potato ◽  
Potato Virus ◽  
Potato Virus Y

Evidence of Potato virus Y Spread through Post-Emergence Management Practices in Commercial Potato Fields

2018 ◽  
Vol 95 (6) ◽  
pp. 720-728 ◽  
Author(s):  
Tyler D. B. MacKenzie ◽  
Irin Arju ◽  
Angela Gallagher ◽  
Xianzhou Nie ◽  
Mathuresh Singh
Keyword(s):  
Potato Virus ◽  
Management Practices ◽  
Potato Virus Y ◽  
Commercial Potato
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