Acylsugar and the role of trichomes in tomato genotypes resistance to Tetranychus urticae

Lucini, Tiago; Faria, Marcos Ventura; Rohde, Cristhiane; Resende, Juliano Tadeu Vilela de; Oliveira, João Ronaldo Freitas de

doi:10.1007/s11829-014-9347-7

Cited by 62 publications

(54 citation statements)

References 30 publications

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“…Thus, the greatest effect on the distance that the mites traveled was observed with the highest concentrations tested. Lucini et al (2015) found that the higher the concentration of this acylsugar on tomato leaflets, the shorter the distance traveled by the mite, corroborating the data found in this study.…”

Section: Assay Of Resistance To Tetranychus Urticaesupporting

confidence: 91%

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Synthetic acylsugars and their effects on the control of arthropod pests

et al. 2017

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One of the main problems facing agriculture is the loss of production as a result of the attack of agricultural pests. Alternative ways to work around this problem are being sought. There are substances called acylsugars that are naturally produced by the wild tomato species S. pennellii and affect arthropod pests. The objectives of this work were to synthesize two acylsugars and assess the biological effect of these on the arthropod pests Bemissia tabaci and Tetranycus urticae. The syntheses were performed via the reactions of glucose and sucrose (saccharose) with acetic anhydride using sodium acetate as the catalyst. The products of these reactions were sucrose octaacetate and glucose penta-acetate, the structures of which were confirmed by spectroscopic techniques. In a resistance test against the mite, a linear correlation between the concentration of the synthesized substances, and the dislocation of the mite was obtained. A delay in the hatching of the arthropod eggs was observed, causing a mortality rate of approximately 95% in the 1 st instar larvae of mites that was confirmed in adults. In the biological tests with Bemisia tabaci, there was a low rate of hatching and emergence, and the effect on the nymphs was the deformation of the emergent adults.Index terms: Solanum pennellii; Solanum habrochaites var. hirsutum; sugar esters; Bemisia tabaci; Tetranychus urticae. RESUMOUm dos grandes problemas que a agricultura enfrenta é a perda de produção causada pelo ataque de pragas agrícolas. Assim, buscamse maneiras alternativas de contornar esse problema. Dentre esses, encontram-se substâncias, denominadas de acilaçúcars, que são produzidas naturalmente por espécies selvagens do tomate S. pennellii e que apresentam efeito sobre artrópodes-praga. Os objetivos desse trabalho foram sintetizar dois compostos de acilaçúcares e avaliar o efeito biológico destas sobre os artrópodes-praga Bemissia tabaci e Tetranycus urticae. A síntese foi feita via as reações de glicose e sacarose com anidrido acético, utilizando acetato de sódio como catalisador. Os produtos dessas reações foram o octa-acetato de sacarose e o penta-acetato de glicose, cujas estruturas foram confirmadas por técnicas espectroscópicas. No teste de resistência do ácaro, foi possível obter um ajuste linear entre a concentração das substâncias sintetizadas e o deslocamento do ácaro. Ambas as substâncias obtidas apresentaram um atraso na eclosão dos ovos do artrópode, ocasionando uma mortalidade de aproximadamente 95% em ácaros de 1º ínstar que foram confirmadas em adultos. Nos testes biológicos com Bemisia tabaci, verificou-se uma baixa taxa de eclosão e emergência, sendo que o efeito sobre as ninfas foi a má formação para adultos emergidos.

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Section: Assay Of Resistance To Tetranychus Urticaesupporting

confidence: 91%

“…(Homoptera: Aleyrodidae) biotype B] have had an important impact. The main problem is that, after infestation by these types of pests in the field, their eradication is practically impossible (Lucini et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Synthetic acylsugars and their effects on the control of arthropod pests

et al. 2017

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“…Therefore, alternative methods of controlling B. tabaci biotype B are required, in order to reduce the amount of chemicals used in the management of arthropod pests (Sayeda et al, 2009). The use of tomato genotypes that are resistant to arthropod pests has shown promising results (Toscano et al, 2002;Fancelli et al, 2003;Maluf et al, 2010;Dias et al, 2013;Lucini et al, 2015). Varietal resistance is a viable alternative within an integrated pest management strategy, because the resistance levels exhibited by commercial cultivars, particularly those that are cultivated for industrial processing, are inadequate.…”

Section: Introductionmentioning

confidence: 99%

“…Resistance to pests obtained from S. pennellii has been linked to the presence of allelochemicals called acyl sugars (ASs). These allelochemicals have deleterious effects during certain stages of pest development, and can even prevent oviposition and feeding (Muigai et al, 2002;Resende et al, 2002a;Lucini et al, 2015). According to Resende et al (2009), genotypes in breeding programs should be selected for high AS levels for pest resistance.…”

Section: Introductionmentioning

confidence: 99%

Acyl sugars and whitefly (Bemisia tabaci) resistance in segregating populations of tomato genotypes

Dias¹,

Resende²,

Marodin³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. The wild tomato, Solanum pennellii, is an important source of resistance genes against tomato pests. This resistance is due to the presence of acyl sugars (AS), which are allelochemicals that have negative effects on arthropod pests. There are no commercially available tomato cultivars that exhibit significant levels of resistance to arthropod pests. Therefore, this study evaluated resistance to whitefly (Bemisia tabaci) in F 2 and F 2 RC 1 tomato genotypes with high AS levels from a cross between Solanum lycopersicum 'Redenção' and the S. pennellii accession, LA-716. Plants were exposed to B. tabaci biotype B at the pre-flowering stage. In both generations, there were significant, negative correlations between AS content and oviposition preference and nymph development. Whitefly exhibited a lower preference for oviposition and produced fewer nymphs in genotypes with high AS levels and the wild parent S. pennellii than in the low AS-level genotypes and Redenção cultivar, demonstrating that the breeding program was effective in transferring resistance to the F 2 and F 2 RC 1 generations. RVTA-2010-pl#31 and RVTA-2010-pl#94 are promising genotypes that produced materials with high AS levels in the F 2 RC 1 generation (RVTA-2010-31-pl#177 and RVTA-2010-94-pl#381).

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“…With increased demand for tomato based products by the consumer, as well as increased demand for high quality products with low agrochemical indexes, alternative methods of control have been used in an attempt to reduce the use of chemical products; this includes the use of resistant genotypes, which have shown promise in the fight against arthropod pests (Resende et al, 2009;Silva et al, 2009;Oliveira et al, 2012;Dias et al, 2013;Neiva et al, 2013;Lucini et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Indirect selection of industrial tomato genotypes rich in zingiberene and resistant to Tuta absoluta Meyrick

Lima¹,

Resende²,

Oliveira³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. Obtaining tomato cultivars resistant to pests through interspecific crosses between commercial cultivars and wild accessions is an important tool in integrated pest management. The aim of this study was to select tomato genotypes with high zingiberene (ZGB) levels that are resistant to the South American tomato moth (Tuta absoluta Meyrick) and to estimate genetic parameters of ZGB inheritance from the interspecific cross Solanum lycopersicum cultivar 'Redenção' x Solanum habrochaites var. hirsutum (PI-127826 accession). F 2 plants with different ZGB contents were selected and submitted to a tomato moth resistance test. ZGB content exhibits high broad sense heritability, with incomplete dominance of lower ZGB content. Furthermore, the level of ZGB in leaflets was estimated to be controlled by two genes. These results show that high ZGB levels are effective at conferring resistance to the South American tomato moth.

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Acylsugar and the role of trichomes in tomato genotypes resistance to Tetranychus urticae

Cited by 62 publications

References 30 publications

Synthetic acylsugars and their effects on the control of arthropod pests

Synthetic acylsugars and their effects on the control of arthropod pests

Acyl sugars and whitefly (Bemisia tabaci) resistance in segregating populations of tomato genotypes

Indirect selection of industrial tomato genotypes rich in zingiberene and resistant to Tuta absoluta Meyrick

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