Resistência à traça-do-tomateiro em plantas com altos teores de acilaçúcares nas folhas

Neto, Álvaro Carlos Gonçalves; Silva, Vanisse de F; Maluf, Wilson Roberto; Maciel, Gabriel Mascarenhas; Nízio, Daniela Ac; Gomes, Luís Antônio Augusto; Azevedo, Sebastião Márcio de

doi:10.1590/s0102-05362010000200011

Cited by 25 publications

(23 citation statements)

References 9 publications

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“…In breeding programs, specific methods have been successfully used (interespecific cross and backcross) in order to reduce the attack of the most common pests in the tomato crop (Maciel et al, 2009;Gonçalves Neto et al, 2010;Maluf et al, 2010;Oliveira et al, 2012;Neiva et al, 2013). The use of the wild accession, Solanum pennellii, allows obtaining lines (Maciel et al, 2009;Gonçalves Neto et al, 2010) and hybrids of tomato, with broad-spectrum resistance to pests Maciel et al, 2011;Oliveira et al, 2012;Neiva et al, 2013). The wild species, S. pennellii, has a secondary metabolite that acts as an allomone to arthropods, named acylsugar, which when combined with the presence of glandular trichomes, become the mainly responsible for induce pest's resistance on tomato plants.…”

Section: Introductionmentioning

confidence: 99%

Mini tomato genotypes resistant to the silverleaf whitefly and to two-spotted spider mites

et al. 2017

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ABSTRACT. The mini tomato production has expanded, becoming an amazing alternative for enterprise. Despite all commercial potential, the cultivation has the occurrence of pests as main obstacle during the crop development. Nowadays, there are no researches that aimed obtaining genotypes with high acylsugar content, capable of providing a broad-spectrum resistance to pests. This study aimed the selection of mini tomato genotypes, with high acylsugar content, and checking the resistance level to the silverleaf whitefly [Bemisia tabaci (Gennadius)] and to the two-spotted spider mites (Tetranychus urticae Koch). Sixteen genotypes were evaluated, from which 12 were on the generation F 2 BC 1 , originated from the interespecific cross between Solanum pennellii versus Solanum lycopersicum L. and 4 were check treatments, being three of cultivated tomatos (cv. Santa Clara, UFU-02, and UFU-73) and the wild accession LA-716 (S. pennellii). The variables analyzed were acylsugar content, repellency to the silverleaf whitefly, repellence to the two-spotted spider mites, and density of glandular trichomes. The genotypes UFU-22-F 2 BC 1 #9 and UFU-73-F 2 BC 1 #11 have high acylsugar content and both are resistant to the pests that were evaluated. New studies must be conducted seeking for inbred lines, obtained from the selected genotypes, aiming to get commercial hybrids with high acylsugar content.

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Section: Introductionmentioning

confidence: 99%

Mini tomato genotypes resistant to the silverleaf whitefly and to two-spotted spider mites

et al. 2017

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“…Alth ough correlat ions between the concentrations of foliar allelochemicals (2-TD, ZGB or AS) and the degree of pest resistance have been established (ARAGÃO; DANTAS; BENITES, 2000;MALUF et al, 2007;SILVA et al, 2009;GONÇALVES NETO et al, 2010;MALUF et al, 2010), few critical studies have compared the degree of pest resistance among lines rich in different allelochemicals.…”

Section: Introductionmentioning

confidence: 99%

Role of allelochemicals and trichome density in the resistance of tomato to whitefly

et al. 2013

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In Brazil, the tomato is cultivated in almost all geographic regions even though its yield is significantly reduced by pests and diseases. Among these pests and diseases, whitefly is a major problem that causes direct and indirect damage due to its role in transmission of geminiviruses. The aim of the present study was to compare the degree of resistance to the silverleaf whitefly of tomato plant lines rich in acyl sugars (AS), zingiberene (ZGB), and 2-tridecanone (2-TD) and to establish whether selection for strains with higher densities of glandular trichomes promotes sufficient resistance to this insect pest. The investigated lines were developed by performing back-crossings in tomato (Solanum lycopersicum) from the interspecific crossing of S. lycopersicum x S. habrochaites var. glabratum 'PI 134417'. Lines rich in AS, ZGB, and 2-TD were tested for their levels of resistance to B. tabaci biotype B. Two tomato plant lines (TOM-584 and TOM-679) with normal AS levels and one wild specimen (PI 134417) with high 2-TD content were used as controls. TOM-687, ZGB-703, and TOM-622 were less preferred by B. tabaci for oviposition, and nymphs exhibited a poorer survival rate on those plant lines than on the susceptible controls, TOM-584 and TOM-679. Allelochemicalrich lines exhibited pest resistance, whereas the controls did not, and the allelochemical-rich lines did not differ significantly from each other in the level of resistance. The results show that the development of tomato plant lines rich in 2-TD, ZGB and AS is an effective option for indirect selection for resistance to B. tabaci biotype B. All lines selected based on high trichome density except for BPX-365F-751-05-01-03 exhibited fewer nymphs than the susceptible controls, indicating that selection for more glandular trichomes was generally effective in promoting increased resistance to the silverleaf white flay.Index terms: Solanum lycopersicum, 2-tridecanone, zingiberene, acyl sugars, indirect selection. RESUMONo Brasil, o tomate é cultivado em praticamente todas as regiões, embora seu rendimento seja reduzido por pragas e doenças. A mosca-branca, comumente presente, causa danos diretos e indiretos, devido à transmissão de geminiviros. O objetivo do presente trabalho foi comparar o grau de resistência à mosca branca de linhagens de tomateiro ricas em acilaçúcares (AA), zingibereno (ZGB) e 2-tridecanona (2-TD) e verificar se a seleção de linhagens com base em tricomas glandulares é efetiva no sentido de promover níveis satisfatórios de resistência. Essas linhagens foram obtidas através de retrocruzamentos em tomateiro Solanum lycopersicum, a partir do cruzamento interespecífico S. lycopersicum x S. habrochaites var. glabratum 'PI 1344171'. Linhagens ricas em AA , ZGB e 2-TD foram testadas para níveis de resistência. Duas linhagens de tomateiro (TOM-584 e TOM-679), com nível normal de AA, e o acesso selvagem (PI 134417), alto teor de 2-TD, foram utilizados como testemunhas. TOM-687, ZGB-703 e TOM-622 mostraram diminuições na ovoposição e na contage...

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“…Insect resistant cultivar development is considered as Aynalem 19 one of alternative approach than chemical pesticides for obtaining cost-benefit ratio for pest control (Pereira et al, 2008;Gonçalves et al, 2010;Maluf et al, 2010). In Brazil, tomato improvement was practiced to obtain pestresistant cultivars by incorporating the alleles for resistance present in wild plants for commercialization and produce the allele-chemicals associated with resistance (Silva et al, 2009;Gonçalves et al, 2010;Maluf et al, 2010).…”

Section: Synergetic Resistance Development Of Host Tomatomentioning

confidence: 99%

“…In Brazil, tomato improvement was practiced to obtain pestresistant cultivars by incorporating the alleles for resistance present in wild plants for commercialization and produce the allele-chemicals associated with resistance (Silva et al, 2009;Gonçalves et al, 2010;Maluf et al, 2010). Three types of allele-chemicals (acylsugars, zingiberene, and 2-tridecanone) have been associated as resistant to T. absoluta (Pereira et al, 2008;Silva et al, 2009;Maluf et al, 2010).…”

Section: Synergetic Resistance Development Of Host Tomatomentioning

confidence: 99%

“…The resistance of tomato strains rich in 2-tridecanone (2-TD), zingiberene (ZGB), and acyl sugars (AA) to the tomato moth, T. absoluta showed significant reduction on evaluated characteristics, such as oviposition rate, severity of damage to the plants, injuries to the leaflets, and the percentage of leaflets attacked (De Oliveira et al, 2012). The oviposition rate reduction of T. absoluta was directly associated with high concentrations of 2-TD, ZGB, and AA in the tomato cultivars (Silva et al, 2009;Gonçalves et al, 2010;Maluf et al, 2010). This is a very important strategy to prevent the tomato plant from insect attack.…”

Section: Synergetic Resistance Development Of Host Tomatomentioning

confidence: 99%

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Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

Aynalem¹

2018

J. Agric. Biotech. Sustain. Dev.

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Continue climatic changes in the world enhance the emergence of invasive agricultural insect pests.Tuta absoluta is one of the most devastating tomato leafminer and it spreads extensively in almost all parts of the world. It is a serious threat for tomato production and it results in highest damage. T. absoluta has fast growth rate with developmental stages of egg, larvae, pupa, and adult and it adapts to different environmental conditions. A larva is the most destructive one that consumes preferably leaves, stems and fruits of the tomato plant by hiding within mesophyll of the plant tissues. Although different environmentally hazardous pesticides are used against T. absoluta, none of the insecticides give full control due to the resistance development. This problem calls an urgent search for eco-friendly alternatives to control this invasive insect. Recent investigations are focused on different environmental friendly approaches that inclusively termed as IPM strategies. These are cultural practices, biopesticides, and biological using parasitoids, predators, microbial cells, microbial products, RNAi, inheritance sterility development in insect and pest resistant plant cultivar production are considered as promising alternatives to control T. absoluta. Therefore, this review briefly describes the current status of these methods used to design suitable and sustainable management strategies against T. absoluta.

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Resistência à traça-do-tomateiro em plantas com altos teores de acilaçúcares nas folhas

Cited by 25 publications

References 9 publications

Mini tomato genotypes resistant to the silverleaf whitefly and to two-spotted spider mites

Mini tomato genotypes resistant to the silverleaf whitefly and to two-spotted spider mites

Role of allelochemicals and trichome density in the resistance of tomato to whitefly

Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

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