Monitoring aphids and potato virus Y in seed and commercial potato fields in Oregon

2016 ◽  
Author(s):  
Sudep Bag
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Commercial Potato

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

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.

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

scholarly journals Identification of Potato virus Y Strains Associated with Tuber Damage During a Recent Virus Outbreak in Potato in Idaho

Plant Disease ◽  
2008 ◽  
Vol 92 (9) ◽  
pp. 1371-1371 ◽  
Author(s):  
A. V. Karasev ◽  
T. Meacham ◽  
X. Hu ◽  
J. Whitworth ◽  
S. M. Gray ◽  
...  
Keyword(s):  
United States ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Potato Production ◽  
Russet Burbank ◽  
Rt Pcr ◽  
Tobacco Plants ◽  
Commercial Potato ◽  
Pcr Products ◽  
Das Elisa

Potato virus Y (PVY) causes substantial losses in potato production by decreasing yields and affecting the quality of potato tubers. Management of PVY in potato is dependent primarily on potato seed certification programs to prevent or limit initial levels of virus inoculum. Prior to 1990, the ordinary strain of PVY (PVYO) was the predominant virus in North America. PVYO induces clear foliar symptoms in many potato cultivars, allowing successful management in seed potato through a combination of visual inspections and limited laboratory testing. In recent years, necrotic strains of PVY (PVYN, PVYNTN, and PVYN:O) have begun to spread in the United States, many of which induce mild symptoms in potato, making them more difficult to manage through visual inspections. In addition to reducing yield, necrotic isolates may also cause external and internal damage in tubers of susceptible cultivars, which is known as potato tuber necrotic ringspot disease (PTNRD). Tuber necrotic strains of PVY have been reported across the northern United States (1,2,4), although limited information is available on their incidence and spread in commercial potato production. During June and July of 2007, 38 random samples were collected from three different commercial fields displaying disease problems (cvs. Russet Ranger, Alturas, and Russet Burbank) in the vicinity of Idaho Falls, ID. Plants collected showed various degrees of mosaic and leaf yellowing. By using double-antibody sandwich (DAS)-ELISA and reverse transcription (RT)-PCR, 25 of these plants were identified as PVY positive. The mutiplex RT-PCR assay (3) confirmed that nine plants were infected with PVYNTN and 11 with PVYN:O. No RT-PCR products were amplified from five samples. During September and October of 2007, 25 tuber samples (cv. Russet Burbank) showing various degrees of unusual internal symptoms (e.g., brown spots) were collected near Idaho Falls, ID. Twenty-two tubers were found PVY positive by DAS-ELISA, and multiplex RT-PCR determined 13 of those were PVYNTN, three were PVYO, one was a PVYNTN/N:O mixture, and one was a PVYO/N:O mixture. No RT-PCR products were amplified from four samples. In October 2007, six tubers showing distinct external tuber damage characteristic of PTNRD (cv. Highland Russet) were collected near Twin Falls, ID. All six tubers were determined to be PVY positive by DAS-ELISA, and RT-PCR identified five as infected with PVYNTN and one with PVYN:O. All the mixtures were easily separated by inoculating tobacco plants followed by subsequent testing of individual plants. Asymptomatic tubers from the same lot not showing PTNRD damage were found PVY negative by DAS-ELISA and RT-PCR. All PVYNTN isolates collected during 2007 were inoculated into tobacco plants (Nicotiana tabacum L. cv. Xanthi) and confirmed to induce systemic vein necrosis. Limited sequencing of four of the PVYNTN isolates determined that they contained recombinant junctions 2 and 3, identifying them as being related to the European strain of PVYNTN (3). The data suggest an increase in distribution and incidence of necrotic strains of PVY in commercial, potato-production areas in Idaho during an outbreak in 2007 and the potential for an increase in PTNRD. References: (1) P. M. Baldauf et al. Plant Dis. 90:559, 2006. (2) J. M. Crosslin et al. Plant Dis. 90:1102, 2006. (3) J. H. Lorenzen et al. Plant Dis. 90:935, 2006. (4) L. M. Piche et al. Phytopathology 94:1368, 2004.

Expression of the Tomato pot-1 Gene Confers Potato Virus Y (PVY) Resistance in Susceptible Potato Varieties

2021 ◽  
Author(s):  
Chen Zhang ◽  
Kelly A. Zarka ◽  
Daniel G. Zarka ◽  
Jonathan L. Whitworth ◽  
David S. Douches
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Potato Varieties ◽  
Pvy Resistance
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