Potatoes in Warm Climates

Khurana, S. M. P.; Garg, I. D.

doi:10.1007/978-94-007-0791-7_7

Cited by 6 publications

(4 citation statements)

References 29 publications

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“…All life stages other than eggs cause damage by phloem feeding or by excretion of honeydew, and large infestations can result in stunted plants and leaf necrosis (Brødsgaard & Albajes, 1999). T. vaporariorum also transmits numerous plant viruses belonging to the Closteroviridae family (Jones, 2003; Khurana & Garg, 2004). It is the target of many insecticides and has developed resistance to numerous chemical classes including pyrethroid (Wardlow, 1985) and neonicotinoid insecticides (Bi & Toscano, 2007; Gorman et al ., 2007; Karatolos et al ., 2010).…”

Section: Introductionmentioning

confidence: 99%

Resistance to spiromesifen in Trialeurodes vaporariorum is associated with a single amino acid replacement in its target enzyme acetyl‐coenzyme A carboxylase

Karatolos

Williamson

Denholm

et al. 2012

Insect Molecular Biology

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Spiromesifen is a novel insecticide and is classed as a tetronic acid derivative. It targets the insects' acetyl-coenzyme A carboxylase (ACCase) enzyme, causing a reduction in lipid biosynthesis. At the time of this publication, there are no reports of resistance to this class of insecticides in insects although resistance has been observed in several mite species. The greenhouse whitefly Trialeurodes vaporariorum (Westwood) is a serious pest of protected vegetable and ornamental crops in temperate regions of the world and spiromesifen is widely used in its control. Mortality rates of UK and European populations of T. vaporariorum to spiromesifen were calculated and up to 26-fold resistance was found. We therefore sought to examine the molecular mechanism underlying spiromesifen resistance in this important pest. Pre-treatment with piperonyl butoxide did not synergize spiromesifen, suggesting a target-site resistance mechanism. The full length ACCase gene was sequenced for a range of T. vaporariorum strains and a strong association was found between spiromesifen resistance and a glutamic acid substitution with lysine in position 645 (E645K) of this gene. A TaqMan allelic discrimination assay confirmed these findings. Although this resistance is not considered sufficient to compromise the field performance of spiromesifen, this association of E645K with resistance is the first report of a potential target site mechanism affecting an ACCase inhibitor in an arthropod species.

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Section: Introductionmentioning

confidence: 99%

Resistance to spiromesifen in Trialeurodes vaporariorum is associated with a single amino acid replacement in its target enzyme acetyl‐coenzyme A carboxylase

Karatolos

Williamson

Denholm

et al. 2012

Insect Molecular Biology

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“…Much of the spread of PLRV occurs early in the season in May to early July, and thus, an early spread of M . persicae can lead to an increase in incidence (Khurana & Garg, 2003). Transmission of PLRV is also temperature dependent (Chung et al., 2016), and in the last 5 years of the study period, winters have been notably milder than average in eastern Scotland, except for 2021 (https://www.metoffice.gov.uk/research/climate).…”

Section: Discussionmentioning

confidence: 99%

Section: Predictors Of Diseasementioning

confidence: 99%

Landscape‐scale patterns and predictors of potato viruses in Scotland

Skelsey

2024

Plant Pathology

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Virus diseases represent important economic threats to seed potato production worldwide, yet relatively little is known of their epidemiology at the landscape‐scale. In this study, data was compiled from the Scottish national seed potato classification scheme on the incidence of 10 different potato viruses for the years 2009–2022. A co‐occurrence analysis identified that 12 virus species pairs occurred together more often than expected by chance, and potato blackleg was positively associated with eight potato viruses. ArcGIS was used to investigate spatial and spatiotemporal variation in incidence rates of the three most prevalent viruses (potato virus Y, potato leaf roll virus and potato virus A), and this revealed prominent geographic differences in long‐term disease outcomes. Focusing on potato virus Y as the most commonly occurring single infection, interpretable machine‐learning techniques were used to investigate the influence of key crop, management and environmental factors on patterns of incidence in space and time. The results showed that health characteristics of seed stocks were among the most important predictors of incidence, along with blackleg infection, several management features, cultivar resistance, distance to the nearest seed and ware crop, temperature variables and several soil features. This approach provides a comprehensive overview of potato viruses in Scotland, a deeper understanding of epidemiological risk factors at the landscape‐scale and a forecast model that could serve as the basis of a decision support tool for improved management of potato virus Y.

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“…Its pest status reflects a high degree of polyphagy combined with a rapid reproductive rate and potential for inadvertent transfer between sites on infested plant material. Trialeurodes vaporariorum causes damage by direct feeding or by excretion of honeydew, and large infestations can result in stunted plants and leaf necrosis,2 and it also transmits numerous plant viruses belonging to the Closteroviridae family 4, 5…”

Section: Introductionmentioning

confidence: 99%

Preparation of bipolar membranes. II

Hao

Chen

et al. 2001

J of Applied Polymer Sci

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ABSTRACT:The bipolar multilayer membrane was prepared by a new technique. The interfacial layer and cation layer were formed by only one step. The anion and cation layers were made from the same material from which chloromethylated polysulfone was used as a basic material. The bipolar membranes were composed of a solventresistant anion layer with crosslinking matrix by the reaction of chloromethylated polysulfone in DMF with diamine; an ultrathin interfacial layer from chloromethylated polysulfone solution in DMF, containing cation-exchange resin and both quaternary and nonquaternary amine groups; and a cation layer from chloromethylated polysulfone dispersing cation resin powder. The prepared bipolar membrane exhibits a lower voltage drop over 100 mA/cm 2 and stable performances at a long-term operation.

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Potatoes in Warm Climates

Cited by 6 publications

References 29 publications

Resistance to spiromesifen in Trialeurodes vaporariorum is associated with a single amino acid replacement in its target enzyme acetyl‐coenzyme A carboxylase

Resistance to spiromesifen in Trialeurodes vaporariorum is associated with a single amino acid replacement in its target enzyme acetyl‐coenzyme A carboxylase

Landscape‐scale patterns and predictors of potato viruses in Scotland

Preparation of bipolar membranes. II

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