Structure-Function Relationships Affecting the Insecticidal and Miticidal Activity of Sugar Esters

Puterka, Gary J.; Farone, William; Palmer, Tracy; Barrington, Anthony

doi:10.1093/jee/96.3.636

Cited by 91 publications

(68 citation statements)

References 29 publications

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“…The models that best explained the relationships of both resistance traits with acylsucrose production were sigmoidal models, and sigmoidal is a common relation found in dose-response studies. Puterka et al (2003) found that synthetic sugar esters was functionally related to mortality of nymphal stages of T. urticae. Here, we found similar conclusions for adult mites, and extended them to repellence and oviposition.…”

Section: Discussionmentioning

confidence: 99%

Resistance to the two-spotted spider mite (Tetranychus urticae) by acylsucroses of wild tomato (Solanum pimpinellifolium) trichomes studied in a recombinant inbred line population

2008

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Trichome-based host plant resistance is a complex mechanism that could be used in tomato breeding to control arthropod pests. The aims of this work were to evaluate the plant traits (density of trichomes and acylsucrose production) and the functional relationships of these traits with mortality, repellence, and oviposition of Tetranychus urticae Koch (Acari: Tetranychidae). We used a population of recombinant inbred lines (RILs) derived from the cross between the wild tomato, Solanum pimpinellifolium L. 'TO-937', and the cultivated tomato, Solanum lycopersicum L. Multiple regression analyses showed that high acylsucrose content and high type-IV trichome density increased mortality and repellence, and reduced oviposition of T. urticae. Single regression analyses showed that a logistic model best explained the relationship between mortality or repellence and acylsucrose content, whereas a negative-exponential model best described the relationship between oviposition and acylsucrose content. Linear models were the best-fits for the three resistance variables with trichome IV density. Probit analysis was used to estimate acylsucrose effective doses, and revealed that 31 and 10% of the RILs produced acylsucrose above the effective doses for 90% mortality or repellence, respectively. Altogether, these results indicate that S. pimpinellifolium may be a suitable genetic source of resistance to spider mites to be used in cultivated tomato.

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Section: Discussionmentioning

confidence: 99%

Resistance to the two-spotted spider mite (Tetranychus urticae) by acylsucroses of wild tomato (Solanum pimpinellifolium) trichomes studied in a recombinant inbred line population

2008

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“…Because of the adverse effects of the fungicides, there is a need for alternative bio-chemicals, which are sustainable and ecofriendly. Plant-made products, such as sugar esters and terpenoids are shown to possess antibacterial, antifungal, and insecticidal properties (14)(15)(16)(17). Essential oils, such as cinnamaldehyde (12) and tobacco root constituents such as chlorogenic acid and scopoletin, and also free phenolic acids (18) were found to be active against black shank disease.…”

Section: Resumementioning

confidence: 99%

Use of Several Natural Products from Selected Nicotiana Species to Prevent Black Shank Disease in Tobacco

Kroumova

Artiouchine

Wagner

2016

Beiträge Zur Tabakforschung International/Contributions to Tobacco Research

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SUMMARY Black shank is a major annual disease threat to all types of tobacco worldwide. It is caused by the fungus Phytophthora parasitica var. nicotianae (PPN). The major tobacco growing areas in US - Kentucky, Tennessee and North Carolina can experience devastating losses, reaching in some fields up to 100%. Thus far, the main approaches to control this disease have been creation of resistant varieties, fungicide treatments, and crop rotation. Some fungicides are reported to have negative effects on the environment. The goal of this work was to test the antifungal activity of several natural products that are synthesized by certain Nicotiana species, and secreted to the leaf surface. We hypothesized that phylloplanin, cis-abienol, labdenediol and sclareol can suppress PPN-race 0- and PPN-race 1-caused disease in Burley tobaccos KY 14 and MS KY 14 × L8LC in the greenhouse. We developed methods for leaf surface extraction, spore preparation and soil drench application of the natural compounds tested. Experiments were performed on 5–8 week-old greenhouse grown seedlings. cis-Abienol showed high inhibitory properties toward the disease. Race 0 infection was completely subdued in KY 14 while race 1 infection was reduced by 70–80%, and delayed by 6–10 days in KY 14 and MS KY14 × L8LC. Sclareol was very effective in inhibiting race 0-caused disease in both tobacco cultivars. In MS KY 14 × L8LC race 1 infection was inhibited while in KY 14 it was reduced by 85% and delayed by 6 days. Labdenediol reduced the disease by half in eight week-old KY 14 plants. Tobacco phylloplanin reduced plant infection by both races by 50–60% and delayed the disease by 6–10 days. Phylloplanin was least suppressive in both tobacco cultivars. We consider sclareol to be the best candidate for future studies due to its antifungal properties and availability. cis-Abienol, despite its good antifungal activity, is not feasible for large-scale use due to the production and stability limitations.

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“…The material was a mixture containing three different esters, monoester, diester, and triester. In this study, S-770 was chosen because its favorable composition and solubility (Glatter et al 2001;Puterka et al 2003). The other chemicals were purchased from Sigma Chemical Co., Missouri, USA.…”

Section: Organismsmentioning

confidence: 99%

Enhancement of fructanohydrolase synthesis from Aspergillus niger by simultaneous in vitro induction and in vivo acid stress using sucrose ester

Guo

Qian

Zhang

2007

World J Microbiol Biotechnol

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This study describes a novel strategy to improve the fructanohydrolase production and growth performance of Aspergillus niger by the addition of sucrose ester to the culture medium in a 3 L fermenter. It was found that in the aerobic and non-pH-controlled condition, the sucrose ester not only acted as a more favorable in vitro inducer than inulin for fructanohydrolase formation, but also significantly forced in vivo carbon and energy flux into enzyme synthesis by acid stress. Response surface methodology (RSM) was used to optimize the composition of the culture medium, hence the fermentation period was shortened (near 50%) and enzyme activity was enhanced (over 4-fold higher), respectively. The results presented here provided a novel way to improve the inducible enzyme production by simultaneous inducement and acid stress.

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Structure-Function Relationships Affecting the Insecticidal and Miticidal Activity of Sugar Esters

Cited by 91 publications

References 29 publications

Resistance to the two-spotted spider mite (Tetranychus urticae) by acylsucroses of wild tomato (Solanum pimpinellifolium) trichomes studied in a recombinant inbred line population

Resistance to the two-spotted spider mite (Tetranychus urticae) by acylsucroses of wild tomato (Solanum pimpinellifolium) trichomes studied in a recombinant inbred line population

Use of Several Natural Products from Selected Nicotiana Species to Prevent Black Shank Disease in Tobacco

Enhancement of fructanohydrolase synthesis from Aspergillus niger by simultaneous in vitro induction and in vivo acid stress using sucrose ester

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