Aphid transmission of potato virus Y inhibited by oils

Bradley, Robert H.; Wade, C. V.; Wood, Frederica

doi:10.1016/0042-6822(62)90021-1

Cited by 82 publications

(28 citation statements)

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“…1981) and nymph production, actually enhances acquisition of PVY (Gibson et al, 1982b). In contrast, mineral oils appear to have no behavioral effect but can diminish virus transmission (Bradley et al, 1962;Wijs, 1980), perhaps by chemical rather than physical mechanisms. The discovery of compounds that inhibit aphid settling and virus transmission even by pesticide-resistant aphids and show reasonable persistence in laboratory tests is a promising lead for development of a new type of crop-protection agent.…”

Section: Co 2 Etmentioning

confidence: 71%

Aphid alarm pheromone derivatives affecting settling and transmission of plant viruses

et al. 1982

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1,4-Cycloaddition reactions between (E)-β-farnesene (the aphid alarm pheromone) and dienophiles, such as SO2 and RO·CO·C ≡ CCO·OR, gave products more stable and less volatile than the parent compound. In laboratory experiments, the numbers ofMyzus persicae (Sulz.) settling and nymphs deposited on plants were decreased by some of the reaction products. Acquisition, and thereby transmission, of the semipersistent beet yellows virus and the nonpersistent potato virus Y, was decreased.

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Section: Co 2 Etmentioning

confidence: 71%

Aphid alarm pheromone derivatives affecting settling and transmission of plant viruses

et al. 1982

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“…Since Bradley (1962) and Bradley et al (1963) reported that mineral oil inhibits the transmission of potato virus Y and other styletborne viruses, much research has been carried out to elucidate the mechanism of this phenomenon. Among various types studied the paraffinic mineral oils showed the strongest inhibition of virus transmission, combined with the lowest phytotoxicity; therefore, most of the work has been done with this type of oil which was already commonly used in agriculture for other purposes.…”

Section: Introductionmentioning

confidence: 99%

The viscosity of mineral oils in relation to their ability to inhibit the transmission of stylet-borne viruses

Wijs

Sturm

Schwinn

1979

Netherlands Journal of Plant Pathology

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Thirteen fractions were obtained by distillation of the mineral oil Bayol 50 (ESSO 2214) and these were tested for their ability to inhibit the transmission of potato virus Y to red pepper. The less viscous fractions < 8 cSt at 37 ~ (52 SUS) were shown to be less active, the more viscous fractions were more active than Bayo150 with a viscosity of 8 cSt at 37 ~ Sunoco 7E, a mineral oil with a viscosity of 14.2 cSt at 37 ~ (74 SUS) was shown to be significantly more active than Bayol 50. The difference in emulgator had no influence on these results. We, therefore, recommend to choose mineral oils with a viscosity of at least 12 cSt at 37 ~ ( = 66 SUS) for future work on the inhibition of the transmission of styler-borne viruses.

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“…Since Bradley et al (1962) and Bradley (1963) showed that mineral oil inhibits the transmission of potato virus Y and other stylet-borne viruses, most of the subsequent research has been carried out with paraffinic mineral oils, which showed the best virustransmission inhibiting properties among the various types of oil studied.…”

Section: Introductionmentioning

confidence: 99%

The characteristics of mineral oils in relation to their inhibitory activity on the aphid transmission of potato virus Y

Wijs

1980

Netherlands Journal of Plant Pathology

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In greenhouse trials paraffinic mineral oils, characterized by a viscosity gravity constant (VGC) of 0.790 0.819, and with viscosities between 12 and 30 cSt at 37~ (66-150 SUS) proved to have the best aphid transmission inhibiting activity of potato virus Y to red peppers. The activity decreased rapidly with decreasing viscosities but only slowly with increasing values.Effective oils are further characterized by an unsulfonated residue (USR) of 95-100, indicating the near or total absence of aromatic structures, which are inactive and known to be phytotoxic. The paraffine-pourpoint should be below 0~ indicating that n-paraffines do not form a very important part of the oil, since they are also inactive. Naphthenic structures seem equally inert, their percentage in the oil depending on the origin of the crude oil, because they cannot be separated from the paraffinic structures by refining procedures.Mineral oils which one commercialize for agricultural practice normally have an USR above 95 and a paraffine-pourpoint below 0 ~ Therefore, the information on the classification, based on a VGC value and on the viscosity, is already sufficient to allow an evaluation of those oils of their suitability as inhibitor of the virus transmission by aphids.Additional keyword: Capsicum annuum.

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Aphid transmission of potato virus Y inhibited by oils

Cited by 82 publications

References 1 publication

Aphid alarm pheromone derivatives affecting settling and transmission of plant viruses

Aphid alarm pheromone derivatives affecting settling and transmission of plant viruses

The viscosity of mineral oils in relation to their ability to inhibit the transmission of stylet-borne viruses

The characteristics of mineral oils in relation to their inhibitory activity on the aphid transmission of potato virus Y

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