Acylsugars of Wild Tomato Lycopersicon pennellii Alters Settling and Reduces Oviposition of Bemisia argentifolii (Homoptera: Aleyrodidae)

Liedl, Barbara E.; Lawson, Darlene M.; White, K. K.; Shapiro, Joseph A.; Cohen, David E.; Carson, W. G.; Trumble, John T.; Mutschler, Martha A.

doi:10.1093/jee/88.3.742

Cited by 120 publications

(86 citation statements)

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“…The selected genotypes for high levels of acylsugars in populations BC 1 F 2 are promising in the breeding program, due to the results obtained in the resistance assays. It is presumable that the acylsugars act as resistance mechanisms of antibiosis type, complying with the results obtained by Goffreda et al (1989), Hawthorne et al (1992), Rodrigues et al (1993), Juvik et al (1994), Liedl et al (1995) and Pamplona (2001) for many arthropods- …”

Section: Resultssupporting

confidence: 85%

Resistance of tomato genotypes with high level of acylsugars to Tetranychus evansi Baker & Pritchard

Resende

Maluf²,

Cardoso³

et al. 2008

Sci. agric. (Piracicaba, Braz.)

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The Lycopersicon pennellii accession LA716 has been used as a source of arthropod pest resistance in tomato breeding programs due the high contents of acylsugars presents in its leaflets. We investigated the relationship between high foliar acylsugar contents and repellence to spider mite Tetranychus evansi in plants with contrasting acylsugar levels, selected from F 2 and BC 1 F 2 (= F 2 of the first backcross towards L. esculentum) generations derived from the interespecific cross L. esculentum 'TOM-584' × L. pennellii LA716. Mite resistance was assessed by a repellence test. Plants selected for high levels of acylsugars in leaflets had mite repellence levels similar to that of LA716. The high correlation confirmed the association between high acylsugar levels and mite repellence. Key words: Lycopersicon esculentum, Lycopersicon pennellii, allelochemical, plant breeding, host plant resistance RESISTÊNCIA DE GENÓTIPOS DE TOMATEIRO COM ALTO TEOR DE ACILAÇÚCARES A Tetranychus evansi Baker & PritchardRESUMO: O acesso de Lycopersicon pennellii LA716 tem sido utilizado em programas de melhoramento do tomateiro devido à sua resistência a artrópodos-pragas, mediada pela presença de acilaçúcares nos folíolos. Foi verificada a correlação entre o teor de acilaçúcares em folíolos de tomateiros e a repelência ao ácaro Tetranychus evansi Baker & Pritchard. Foram selecionadas plantas contrastantes quanto aos níveis de acilaçúcares nos folíolos de populações F 2 e F 2 RC 1 (= F 2 do primeiro retrocruzamento para Lycopersicon esculentum) do cruzamento interespecífico de L. esculentum TOM 584 (baixo teor de acilaçúcares) e L. pennellii LA 716 (alto teor). Foi realizado um teste de repelência ao ácaro T. evansi, tomando por base a distância percorrida pelos ácaros nos folíolos. Os genótipos selecionados para alto teor de acilaçúcares, em média, foram responsáveis por reduções significativas nas distâncias percorridas pelos ácaros sobre a superfície do folíolo. A repelência ao ácaro T. evansi exercida pelas plantas selecionadas para alto teor de acilaçúcares deu-se de forma semelhante àquela conferida pelo genitor LA-716. As magnitudes das correlações encontradas confirmam a associação entre altos teores do aleloquímico e a repelência ao ácaro. Palavras-chave: Lycopersicon esculentum, Lycopersicon pennellii, aleloquímicos, melhoramento genético, resistência da planta hospedeira

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Section: Resultssupporting

confidence: 85%

Resistance of tomato genotypes with high level of acylsugars to Tetranychus evansi Baker & Pritchard

Resende

Maluf²,

Cardoso³

et al. 2008

Sci. agric. (Piracicaba, Braz.)

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“…Nevertheless, the resistance of LA716 is related to acylsugar found in type IV trichome, since the ovipositional nonpreference of B. tabaci B biotype was induced by applying synthesized acylsugar on the susceptible 'Santa Clara' genotype (Silva et al 2008). However, such allelochemical did not affect the development of whitefl y nymphs (Liedl et al 1995). Resistance in S. pennellii (LA716) has also been related to antixenosis for oviposition, mediated by acylsugars present in type IV glandular trichomes exudates (Barten et al 1994, Nombela et al 2000, Muigai et al 2003, Fancelli et al 2005.…”

Section: Resultsmentioning

confidence: 99%

Influence of trichomes on attractiveness and ovipositional preference of Bemisia tabaci (Genn.) B biotype (Hemiptera: Aleyrodidae) on tomato genotypes

Oriani¹,

Vendramim²

2010

Neotrop. entomol.

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-Brazil is one of the world's largest tomato producer, but considerable part of the production is lost due to the attack of Bemisia tabaci (Genn.) B biotype. Resistant germoplasm plants can be an important method for B. tabaci control in integrated pest management approaches. The attractiveness and ovipositional preference of B. tabaci for 17 tomato genotypes were evaluated in a free-choice test. Trials were set up in a randomized block design with ten replicates. Each replicate (one tomato plant per pot) was placed in a cage (80 x 50 x 50 cm) and infested with 1,000 adults during four days. Linear correlation tests were applied between the number of insects and eggs and number of trichomes in each tomato genotype. LA716, LA444-1 and PI134418 genotypes were the least attractive, while the 'Santa Clara' was the most attractive; PI134417 trapped the largest number of adults. LA716 genotype (4.1 eggs/leafl et and 2.1 cm 2 /eggs per leafl et) was the least preferred for whitefl y oviposition; NAV1062, 'Fanny', LA1335, 'Santa Clara' and IAC294 were the most preferred genotypes. The glandular trichomes density was negatively correlated with whitefl y's attractiveness and oviposition per leafl et and per leaf, and positively with the number of trapped insects. The non-glandular trichomes density was negatively correlated with the number of trapped insects and positively with whitefl y's oviposition per cm 2 /leafl et and per cm 2 /leaf. LA716 had high antixenosis level (ovipositional nonpreference) toward B. tabaci B biotype related with type IV glandular trichome.

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“…As folhas, caule e frutos da maioria das linhagens desta espécie estão recobertos com esse tipo, que exsudam uma substância pegajosa constituída de cerca de 90% de acil-açúca-res (Burke et al, 1987) e o principal componente é o 2,3,4 tri-O-acil-açúcar (Hawthorne et al, 1992). Este fato também foi relatado por Liedl et al (1995) que observaram a relação da presença Tipos de tricomas em genótipos de Lycopersicon.…”

Section: Resultsunclassified

Tipos de tricomas em genótipos de Lycopersicon

et al. 2001

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Foram identificados os tipos de tricomas em alguns genótipos de Lycopersicon, utilizando microscópio eletrônico de varredura. Foram utilizados os genótipos L. hirsutum (PI 127826 e PI 127827), L. hirsutum var. glabratum (PI 134417), L. pennellii (LA 716) e L. esculentum (híbrido Bruna VFN e Santa Clara). Os tricomas glandulares encontrados foram tipo IV em LA 716, PI 127826, PI 127827 e PI 134417; tipo VIc em PI 127826, PI 127827, PI 134417 e Santa Clara; tipo VII em PI 127826, PI 127827 e PI 134417; tipo I em PI 127826, PI 127827, PI 134417, híbrido Bruna VFN e Santa Clara; tipo VIa em híbrido Bruna VFN. Os tricomas não glandulares observados foram: tipo Va em PI 127826, PI 127827, PI 134417, híbrido Bruna VFN e Santa Clara; VIII em híbrido Bruna VNF e os tipos III e Vb em Santa Clara.

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Acylsugars of Wild Tomato Lycopersicon pennellii Alters Settling and Reduces Oviposition of Bemisia argentifolii (Homoptera: Aleyrodidae)

Cited by 120 publications

References 0 publications

Resistance of tomato genotypes with high level of acylsugars to Tetranychus evansi Baker & Pritchard

Resistance of tomato genotypes with high level of acylsugars to Tetranychus evansi Baker & Pritchard

Influence of trichomes on attractiveness and ovipositional preference of Bemisia tabaci (Genn.) B biotype (Hemiptera: Aleyrodidae) on tomato genotypes

Tipos de tricomas em genótipos de Lycopersicon

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