Epidemiological analysis of risk factors for the spread of potato viruses in Switzerland

Steinger, Thomas; Gilliand, H.; Hebeisen, Thomas

doi:10.1111/aab.12096

Cited by 24 publications

(25 citation statements)

References 30 publications

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“…The initial source of inoculum in the field is known to be the main risk factor for the subsequent spread of PVY to the healthy plants of the field (Steinger et al 2014). The in-field source of inoculum comes from the infected seed tubers planted that offer PVY-infected foliage to the flying aphids, the vectors of the virus.…”

Section: Discussionmentioning

confidence: 99%

The movement of potato virus Y (PVY) in the vascular system of potato plants

Dupuis

2016

Eur J Plant Pathol

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Potato virus Y (PVY) is responsible for major viral diseases in most potato seed areas. It is transmitted by aphids in a non-persistent manner, and it is spread in potato fields by the winged aphids flying from an infected source plant to a healthy one. Six different PVY strains groups affect potato crops: PVY C , PVY N , PVY O , PVY N:O , PVY NTN , and PVY N-Wi . Nowadays, PVY NTN and PVY N-Wi are the predominant strains in Europe and the USA. After the infection of the leaf and accumulation of the virus, the virus is translocated to the progeny tubers. It is known that PVY N is better translocated than PVY O , but little is known about the translocation of the other PVY strains. The translocation of PVY occurs faster in young plants than in old plants; this mature plant resistance is generally explained by a restriction of the cell-to-cell movement of the virus in the leaves. The mother tuber may play an important role in explaining mature plant resistance. PVY is able to pass from one stem to the other stems of the same plant through the vascular system of the mother tuber, but it is unknown whether this vascular link between stems is permanent during the whole life of the plant. Two greenhouse trials were set up to study the spread of PVY in the vascular system of the potato plant. The PVY-susceptible cultivar Charlotte was used for both trials. It was demonstrated that all stems growing from a PVY-infected tuber will become infected sooner or later, and that PVY N-Wi translocates more efficiently to progeny tubers than PVY NTN . It was also demonstrated that the progressive decay of the mother tuber in the soil reduces the possibility for virus particles to infect healthy stems through the vascular system of the mother tuber. This new element contributes to a better understanding of the mechanism of mature plant resistance.

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Section: Discussionmentioning

confidence: 99%

The movement of potato virus Y (PVY) in the vascular system of potato plants

Dupuis

2016

Eur J Plant Pathol

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“…Also Hansen and Nielsen (2012) did not find any significant impact of neonicotinoids in PVY control, in spite of their high efficacy in controlling the number of aphids. It is the mineral oil which many researchers in particular Olubayo et al (2010), Hansen and Nielsen (2012), Fageria et al (2014), Steinger et al (2014), consider to be the most efficient in protecting potatoes against PVY Using insecticides on their own as well as in mixtures with mineral oil does not always impact upon control of aphid numbers (Wróbel 2011b). However, the reduction of the number of aphids in a situation where around healthy material there are numerous sources of infection (plants infected with viruses) does not guarantee protection of healthy plants against the infection (Milošević et al 2012).…”

Section: Resultsmentioning

confidence: 99%

“…Studies implying the possibility of oil substance usage in protection against viruses were reported as early as the 1960s, in particular against PVY (Bradley et al 1962(Bradley et al , 1966Bradley 1963). Nowadays mineral oils are commonly applied for potato protection in many European countries (Harringrton et al 1989, Sigvald and Hulle 2004, Martín-López et al 2006, Steinger et al 2014, including in Poland, where it is used increasingly in the case of cultivars susceptible to PVY. A high level of effectiveness (over 50 %) for potato protection against PVY infection was reported in field conditions by Kurppa and Hassai (1989), Milošević (1996), Turska and Wróbel (1999), Wróbel (2006), Rolot et al (2008), Boiteau et al (2009), Olubayo et al (2010, Fageria et al (2014), Steinger et al (2014).…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays mineral oils are commonly applied for potato protection in many European countries (Harringrton et al 1989, Sigvald and Hulle 2004, Martín-López et al 2006, Steinger et al 2014, including in Poland, where it is used increasingly in the case of cultivars susceptible to PVY. A high level of effectiveness (over 50 %) for potato protection against PVY infection was reported in field conditions by Kurppa and Hassai (1989), Milošević (1996), Turska and Wróbel (1999), Wróbel (2006), Rolot et al (2008), Boiteau et al (2009), Olubayo et al (2010, Fageria et al (2014), Steinger et al (2014). According to Boiteau et al (2009), in addition to application of mineral oil, greater protection can be achieved by ensuring adequate isolation around the plantation, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…use of potato plants resistant to PVY. However, Steinger et al (2014) stated that the efficacy of mineral oil treatment was higher in the years of high infection pressure or for the most susceptible potato cultivars. In earlier studies it was demonstrated that some oil substances, apart from offering PVY protection can also protect potatoes from PVM (Kostiw and Iskrzycka 1976) and Potato virus S (PVS) as well as against PLRV (Turska 1984).…”

Section: Introductionmentioning

confidence: 99%

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Efficacy of Mineral Oil-Insecticide Mixtures for Protection of Potato Tubers Against PVY and PVM

Wrobel

2014

Am. J. Potato Res.

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The impact of a dozen mixtures of the most commonly applied aphicides: Mospilan 20 SP (acetamiprid), Pirimor 500 (pirimicarb) and Karate Zeon 050 CS (lambdacyhalothrin), combined with the mineral oil Sunspray 850 EC, was researched in field conditions to assess their effectiveness in limiting potato tuber PVY, PVM and PLRV infection. In spite of the greatest reduction in the number of aphids occurring following application of Mospilan 20 SP, this treatment was not as effective in limiting PVY infection as, for example, applying Sunspray 850 EC mineral oil. Mineral oil, when used on its own or in a mixture with Pirimor 500 WG, was found to be the most effective measure for limiting PVY infection (the incidence of tubers infested with PVY was reduced by 64 % relative to control, i.e. no protection). A slightly weaker effect was observed in the case of a combination of the mineral oil with full doses of Karate Zeon 050 CS with a half of a dose of Mospilan 20 SP insecticide, however only for protection against PVY. A similar trend was observed for PVM even though a significant difference was only observed for Sunspray 850EC+Pirimor 500WG. In conclusion, the application of insecticide mixtures with mineral oil in protecting against PVY infection is not always as effective as the application of the oil itself only. Addition of the insecticide may sometimes improve the efficacy of protection, however, due to the extra costs involved, not always does it have to be economical.Resumen Bajo condiciones de campo, se investigó el impacto de una docena de mezclas de los siguientes aficidas más comúnmente aplicados: Mospilan 20 SP (acetamiprid), Pirimor 500 (pirimicarb) y Karate Zeon 050 CS (lambdacyhalothrin), combinados con el aceite mineral Sunspray 850 EC, para evaluar su efectividad en limitar la infección de tubérculo por PVY, PVM y PLRV. A pesar de la mayor reducción en el número de áfidos que se presentaron después de la aplicación de Mospilan 20 SP, este tratamiento no fue tan efectivo en limitar la infección de PVY como, por ejemplo, con la aplicación del aceite mineral Sunspray 850 EC. El aceite mineral, al usarlo solo o en mezcla con Pirimor 500 WG, se encontró que era la medida más efectiva para limitar la infección de PVY (la incidencia de tubérculos infectados con PVY se redujo en un 64 % con respecto al testigo sin protección). Se observó un efecto ligeramente más débil en el caso de la combinación del aceite mineral con dosis completa de Karate Zeon 050 CS con la mitad de la dosis del insecticida Mospilan 20 SP, aunque fuera solamente para protección contra PVY. Se observó una tendencia similar para PVM, aun cuando se observó diferencia significativa solamente para Sunspray 850EC+pirimor 500 WG. En conclusión, la aplicación de mezclas de insecticidas con aceite mineral en la protección contra la infección de PVY no es siempre tan efectiva como la aplicación únicamente del aceite solo. La adición del insecticida puede mejorar algunas veces la eficacia de la protección, no obstante, debido al costo extr...

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