Exsudato glandular de genótipos de tomateiro e desenvolvimento de Bemisia tabaci (Genn.) (Sternorryncha: Aleyrodidae) biótipo B

Fancelli, Marilene; Vendramim, José Djair; Frighetto, R. T. S.; Lourenção, André Luiz

doi:10.1590/s1519-566x2005000400017

Cited by 31 publications

(28 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These assumptions are supported by other studies in which the trichome exudates were removed, leading to an increase in the number of eggs of B. tabaci B biotype (Fancelli et al 2005).…”

Section: Resultssupporting

confidence: 74%

“…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%

“…Tomato genotypes with high density of trichomes are positively correlated to the oviposition of B. tabaci (Heinz & Zalom 1995, Snyder et al 1998, Toscano et al 2002, Fancelli et al 2005, especially due to the presence of the type V non-glandular trichome. Therefore, we aimed at evaluating the infl uence of trichomes on 17 tomato genotypes in the attractiveness and ovipositional preference of B. tabaci B biotype.…”

mentioning

confidence: 99%

See 2 more Smart Citations

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

Oriani¹,

Vendramim²

2010

Neotrop. entomol.

View full text Add to dashboard Cite

-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.

show abstract

“…These assumptions are supported by other studies in which the trichome exudates were removed, leading to an increase in the number of eggs of B. tabaci B biotype (Fancelli et al 2005).…”

Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

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

Oriani¹,

Vendramim²

2010

Neotrop. entomol.

View full text Add to dashboard Cite

show abstract

“…Foram registrados apenas dois ovos localizados ao lado dos tricomas glandulares que se encontravam isolados dos demais tricomas e distantes das nervuras (Fig 2D). Fancelli et al (2005) compararam o efeito de oito genótipos de tomateiro sobre a biologia de B. tabaci. Os genótipos afetaram diferentemente o inseto, mas a presença ou ausência dos exsudatos de tricomas não afetou o número e a viabilidade de ovos do inseto entre os genótipos.…”

Section: Resultsunclassified

“…No tomateiro, a resistência por antibiose e antixenose às moscas-brancas está relacionada principalmente com a densidade e o tipo de tricoma (Barten et al 1994, Toscano et al 2002, Muigai et al 2003, Fancelli et al 2005. Baldin et al (2005), ao avaliar os possíveis mecanismos de resistência de diferentes genótipos de tomateiro (Lycopersicon spp.)…”

Section: Influência Dos Tipos De Tricomas Foliaresunclassified

Comportamento de oviposição da mosca-branca Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) biótipo B em tomateiro

Vendramim¹,

Souza²,

Ongarelli³

2009

Neotrop. entomol.

View full text Add to dashboard Cite

-The objective of this work was to evaluate the infl uence of the leaf surface, the insect geotropic behavior and the type of foliar trichome on Bemisia tabaci (Genn.) biotype B oviposition on tomato leaves. Bemisia tabaci females were confi ned in acrylic boxes in which tomato leafl ets were fi xed at the bottom and top part of the boxes to allow insects to access the leaf surface to be tested (adaxial and/or abaxial) in both no-choice and free choice tests. Oviposition was always higher when the leaf was offered at the top of the box and preferably at the abaxial leaf surface. The effects of leaf trichomes (glandular and non glandular) on B. tabaci oviposition was evaluated by offering the abaxial surface of tomato leafl ets to females after a 70% ethanol wash to remove glandular exsudates against a control treatment (without a ethanol wash). Oviposition was concentrated mostly near to non glandular trichomes, showing whitefl y females can discriminate among the trichomes.KEY WORDS: Host selection, oviposition preference, glandular trichome, trichome exsudate RESUMO -Avaliou-se a infl uência da face foliar, do comportamento geotrópico do inseto e do tipo de tricoma foliar sobre a oviposição de Bemisia tabaci (Genn.) biótipo B em folhas de tomateiro. Para avaliação desses efeitos foram realizados vários ensaios nos quais as fêmeas foram confi nadas em caixas de acrílico. Folíolos de tomateiro foram fi xados no topo e na base das caixas, de tal forma a permitir o acesso dos insetos às faces adaxial e abaxial de maneira isolada e concomitante (com e sem chance de escolha). Os insetos sempre depositaram maior número de ovos quando a superfície foliar se encontrava no topo da caixa e, de maneira geral, preferiram depositar seus ovos na face abaxial dos folíolos. Para avaliar o efeito do tipo de tricoma (glandular e não-glandular) sobre a oviposição de B. tabaci, a face abaxial dos folíolos de tomateiro foi oferecida a cerca de 30 fêmeas para oviposição em cada caixa de acrílico. Foram oferecidos folíolos previamente lavados com etanol a 70% (de forma a eliminar os exsudatos glandulares) e sem lavagem prévia. A maior parte da oviposição ocorreu ao lado dos tricomas não-glandulares, demonstrando que o inseto discrimina o tipo de tricoma. PALAVRAS-CHAVE: Seleção hospedeira, preferência para oviposição, tricoma glandular, exsudato do tricoma A mosca-branca Bemisia tabaci (Genn.) biótipo B é atualmente uma das principais pragas do tomateiro, difícil de ser controlada devido ao seu hábito de permanecer na face abaxial das folhas (Villas Boas et al 1997). Os danos desse biótipo são mais intensos em função da sua maior agressividade, que resulta da maior fecundidade, ampla gama de hospedeiros, alta resistência aos inseticidas e capacidade de causar desordens fi siológicas nas plantas (Costa & Brown 1990, Prabhaker et al 1998.As fêmeas de B. tabaci depositam seus ovos preferencialmente na face abaxial das folhas mais novas (Simmons 1994(Simmons , 1999, talvez pelo fato de a face abaxial apresentar cutícula geralmen...

show abstract

Dwarf‐cashew resistance to whitefly (Aleurodicus cocois) linked to morphological and histochemical characteristics of leaves

Goiana

Dias-Pini

Muniz

et al. 2019

Pest Management Science

View full text Add to dashboard Cite

BACKGROUND: The cashew whitefly (CW), Aleurodicus cocois, is an important pest of cashew in Brazil. The use of resistant plants may be an effective strategy for the control of this pest. In a preliminary assay, we found that dwarf-cashew clones show different levels of resistance to CW. Here, we hypothesized that such resistance is associated with morphological characteristics of cashew leaves and their content of phenolic compounds. RESULTS: We determined (i) the attractiveness and suitability for oviposition of five dwarf-cashew clones towards CW, (ii) the leaf morphology and chemistry of those clones, and (iii) the relationship between leaf characteristics and resistance to CW.In greenhouse multiple-choice assays, PRO143/7 and CCP76 showed, respectively, the lowest and highest counts of both CW adults and eggs. Scanning electron microscopy (SEM) analysis revealed that PRO143/7 and EMBRAPA51 have, respectively, the highest and lowest numbers of leaf glandular trichomes. We found a negative correlation between number of trichomes in the abaxial surface of cashew leaves and CW oviposition. In addition, confocal microscopy analysis and histochemical tests with ferrous sulfate indicated a higher accumulation of phenolic compounds in the resistant clone PRO143/7 relative to the other clones. Dwarf-cashew clones did not significantly differ based on the number of leaf epicuticular striations, and the thickness of both leaf lamina and the epidermal layer. CONCLUSION: The resistance of dwarf-cashew plants to CW is associated with an elevated number of trichomes and accumulation of high levels of phenolics in leaves. Additionally, the contribution of epicuticular striation density and thickness of leaf lamina/epidermal layer are insignificant.

show abstract

Exsudato glandular de genótipos de tomateiro e desenvolvimento de Bemisia tabaci (Genn.) (Sternorryncha: Aleyrodidae) biótipo B

Cited by 31 publications

References 14 publications

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

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

Comportamento de oviposição da mosca-branca Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) biótipo B em tomateiro

Dwarf‐cashew resistance to whitefly (Aleurodicus cocois) linked to morphological and histochemical characteristics of leaves

Contact Info

Product

Resources

About