Resistance of tomato genotypes to the silverleaf whitefly mediated by acylsugars

Resende, Juliano Tv; Maluf, Wilson Roberto; Cardoso, María das Graças; Gonçalves, Luciano Donizete; Faria, Marcos Ventura; Nascimento, Ildon Rodrigues do

doi:10.1590/s0102-05362009000300015

Cited by 27 publications

(35 citation statements)

References 15 publications

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“…Volatile organic compounds may reduce whitefly impact on tomato (Guo et al 2013), mainly via repellence but also via potential toxic effects (Bleeker et al 2011). Glandular trichomes on leaf surfaces, particularly type IV and type VI (Firdaus et al 2013), have been shown to physically ensnare whitefly (Toscano et al 2002) and exude deterrent or toxic chemicals such as acyl sugars (de Resende et al 2009). Other physical methods are also important in determining host susceptibility, such as cuticle and epidermis thickness (Toscano et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have investigated the ability of wild tomato species to resist B. tabaci, e.g. Firdaus et al (2012), Rodríguez-López et al (2011) (which both included accessions of the wild tomato species considered here), Firdaus et al (2013) andde Resende et al (2009). Work to elucidate the source of whitefly resistance in wild tomato species has also been attempted.…”

Section: Introductionmentioning

confidence: 99%

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Novel resistance mechanisms of a wild tomato against the glasshouse whitefly

McDaniel

Tosh

Gatehouse

et al. 2016

Agron. Sustain. Dev.

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The glasshouse whitefly, Trialeurodes vaporariorum, is an important pest of many crop plants including tomato, Solanum lycopersicum. Many wild tomato species exhibit a higher resistance to whiteflies. Therefore, locating the source of this enhanced resistance and breeding it into commercial tomato species is an important strategy to reduce the impact of pests on crops. Here, we assessed the pest resistance of Lycopersicon pimpinellifolium by comparing oviposition and feeding data from T. vaporariorum on this wild tomato species with data collected from a susceptible commercial tomato, S. lycopersicum var. 'Elegance'. The location of resistance factors was examined by use of electrical penetration graph (EPG) studies on these tomato species. Results show that whiteflies preferentially settled on the commercial tomato more often in 80 % of the replicates when given free choice between the two tomato species and laid significantly fewer eggs on L. pimpinellifolium. Whiteflies exhibited a shorter duration of the second feeding bout, reduced pathway phase probing, longer salivation in the phloem and more non-probing activities in the early stages of the EPG on the wild tomato species compared to the commercial tomato. These findings evidence that a dual mode of resistance is present in this wild tomato against T. vaporariorum: a post-penetration, pre-phloem resistance mechanism and a phloem-located factor, which to the best of our knowledge is the first time that evidence for this has been presented. These findings can be used to inform future breeding strategies to increase the resistance of commercial tomato varieties against this important pest.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel resistance mechanisms of a wild tomato against the glasshouse whitefly

McDaniel

Tosh

Gatehouse

et al. 2016

Agron. Sustain. Dev.

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“…Linhagens com resistência múltipla a doenças são relativamente frequentes em bancos de germoplasma de programas de melhoramento, o mesmo não acontece com linhagens resistentes a pragas. Recentemente, tornaram-se disponíveis algumas linhagens de tomateiro que aliam boas características comerciais com altos teores foliares de acilaçúcares (AA) (Maciel, 2008), aleloquímicos associados à resistência a uma gama de pragas da cultura (Pereira et al, 2008;Resende et al, 2006Resende et al, , 2008Resende et al, , 2009Silva et al, 2008).…”

Section: Introductionunclassified

“…Gonçalves et al (2007) indicaram que altos teores de AA se devem à ação de um alelo recessivo, com dominância incompleta no sentido de baixos teores. Plantas com altos teores de AA foram resistentes à mosca branca Bemisia argentifolii Bellows & Perring (Homoptera: Aleyrodidae) (Liledl et al, 1995;Maciel, 2008;Resende et al, 2009) e aos ácaros Tetranychus spp (Saeidi et al, 2007;Maciel, 2008;Pereira et al, 2008;Resende et al, 2008) e tiveram confirmada sua resistência à traça Tuta absoluta (Meyrick, 1917) (Lepidóptera: Gelechiidae) (Resende et al, 2006) em gerações segregantes. Tal fato se reveste de especial importância, pois embora a resistência a pragas em tomateiro mediada por AA seja bem documentada (Goffreda et al, 1989;Juvik et al, 1994;Liedl et al, 1995;Gonçalves et al, 2007;Resende et al, 2006Resende et al, , 2008Saeidi et al, 2007;Maciel, 2008), ainda não estão disponíveis, no mercado, tomateiros comerciais com níveis satisfatórios de resistência.…”

Section: Introductionunclassified

heterose e capacidade combinatória de linhagens de tomateiro ricas em acilaçúcares

et al. 2010

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ResumoCom o presente trabalho, objetivou-se estimar a capacidade combinatória de linhagens de tomate ricas em acilaçúcares (AA) quando cruzadas com linhagens com baixo teor de acilaçúcares e estudar a expressão da heterose nos híbridos obtidos. O experimento foi realizado no campo da HortiAgro Sementes Ltda, localizada em Ijaci-MG. O material genético foi constituído de seis híbridos experimentais em esquema de dialelo parcial, constituído de três genitores masculinos (grupo I, com altos teores de acilaçúcares) e dois genitores femininos (grupo II, com baixos teores). Foram avaliadas as características: massa média de fruto (g fruto -1 ) e produção por hectare (t ha -1 ). As linhagens TOM-687 e TOM-688 (ricas em AA e resistentes a pragas) apresentaram estimativas positivas dos efeitos de capacidade geral de combinação, para massa média de frutos, e estimativas negativas, para produção, o que significa que elas contribuíram positivamente para aumento no tamanho do fruto, mas reduziram a produtividade dos híbridos. Já a linhagem TOM-689, ao contrário das duas anteriores, contribuiu para reduzir o tamanho do fruto, mas contribuiu para aumentar a produtividade dos híbridos. Os híbridos obtidos do cruzamento de linhagens com altos teores de acilaçúcares mostraram-se competitivas quando comparadas a híbridos comerciais encontrados no mercado. As melhores combinações híbridos foram obtidas quando as linhas com altos teores de acilaçúcares foram cruzadas com a linhagem elite TOM-684. Termos para indexação: Lycopersicon pennellii, vigor híbrido, aleloquímicos. AbstractThe objective of this work was to assess heterosis and combining ability of tomato lines with high acylsugar (AS) content (group I) and lines with low AS (group II) used to produce AS-rich tomato hybrids. The trial was carried out at the seed production station of the HortiAgro Sementes Ltda., at Ijaci-MG. The genetic material consisted of six experimental hybrids obtained from crosses between three male parents with high AS (group I) and two female parents with low AS (group II). Average fruit weight (g fruit -1 ) and total yield (t ha -1 ) were the traits assessed. The AS-rich pest-resistant lines TOM-687 and TOM-688 showed positive estimates of general combining ability for average fruit mass and negative for yield, increasing fruit size, and reducing the yield of the hybrids. Unlike the two previous lines, TOM-689 presented negative estimates for fruit mass and positive for fruit yield. The data showed that it is feasible to get competitive hybrids from lines with AS sugar content. The best hybrids were produced when these lines were crossed with TOM-684.

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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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Resistance of tomato genotypes to the silverleaf whitefly mediated by acylsugars

Cited by 27 publications

References 15 publications

Novel resistance mechanisms of a wild tomato against the glasshouse whitefly

Novel resistance mechanisms of a wild tomato against the glasshouse whitefly

heterose e capacidade combinatória de linhagens de tomateiro ricas em acilaçúcares

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

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