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Registro Completo
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
12/12/2011 |
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Data da última atualização: |
14/12/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
COSTA, J. G. da; PIRES, E. V.; RIFFEL, A.; BIRKETT, M. A.; BLEICHER, E.; SANTANA, A. E. G. |
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Afiliação: |
JOAO GOMES DA COSTA, CPATC; EDJANE VIEIRA PIRES; ALESSANDRO RIFFEL, CPATC; MICHAEL A. BIRKETT; ERVINO BLEICHER; ANTONIO EUZEBIO GOULART SANTANA. |
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Título: |
Differential preference of Capsicum spp. cultivars by Aphis gossypii is conferred by variation in volatile semiochemistry. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Euphytica, Wageningen, Holanda, v. 177, p. 299?307, 2011. |
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ISSN: |
0014-2336 |
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Idioma: |
Português |
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Conteúdo: |
The aim of this study was to demonstrate that Capsicum spp. cultivars are differentially preferred by the cotton aphid, Aphis gossypii, and to investigate the role of volatile semiochemicals in conferring differences in host preferences. Two preference assays were conducted in 2008 under greenhouse conditions. Fourteen different commercially available cultivars were grown in cages protected by an anti-aphid net, and were infested 60 days after planting, through the release of ten adult female A. gossypii per plant. The results showed that after a five-day infestation period, statistically significant differences in the mean number of A. gossypii between cultivars were observed, with Sweet Pepper Hybrid Green Belt (SPHGB) being one of the cultivars with the lowest number of A. gossypii per plant. To test the hypothesis that the preference of cultivars was associated with release of volatile, Capsicum spp-derived emiochemicals, olfactometer behavior bioassays were conducted with A. gossypii, using volatile organic compounds (VOCs) collected from non-preferred SPHGB and preferred SPAB cultivars. A. gossypii was significantly repelled only by the VOCs of infested SPHGB. Furthermore, coupled gas chromatography-mass spectrometry (GC-MS) analysis of VOCs released by plants prior to, and after, A. gossypii infestation, revealed that the non-preferred SPHGB cultivar released nine additional compounds after infestation, including 6-methyl-5-hepten-2-one, a known plant defense semiochemical involved in plant—aphid interactions. These data suggest that non-preferred cultivars releasing this semiochemical have the potential to be used in reeding programs aimed at producing A. gossypii-resistant Capsicum spp. cultivars. MenosThe aim of this study was to demonstrate that Capsicum spp. cultivars are differentially preferred by the cotton aphid, Aphis gossypii, and to investigate the role of volatile semiochemicals in conferring differences in host preferences. Two preference assays were conducted in 2008 under greenhouse conditions. Fourteen different commercially available cultivars were grown in cages protected by an anti-aphid net, and were infested 60 days after planting, through the release of ten adult female A. gossypii per plant. The results showed that after a five-day infestation period, statistically significant differences in the mean number of A. gossypii between cultivars were observed, with Sweet Pepper Hybrid Green Belt (SPHGB) being one of the cultivars with the lowest number of A. gossypii per plant. To test the hypothesis that the preference of cultivars was associated with release of volatile, Capsicum spp-derived emiochemicals, olfactometer behavior bioassays were conducted with A. gossypii, using volatile organic compounds (VOCs) collected from non-preferred SPHGB and preferred SPAB cultivars. A. gossypii was significantly repelled only by the VOCs of infested SPHGB. Furthermore, coupled gas chromatography-mass spectrometry (GC-MS) analysis of VOCs released by plants prior to, and after, A. gossypii infestation, revealed that the non-preferred SPHGB cultivar released nine additional compounds after infestation, including 6-methyl-5-hepten-2-one, a known plant defense semioche... Mostrar Tudo |
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Palavras-Chave: |
Disease. |
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Thesagro: |
Algodão. |
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Thesaurus NAL: |
cotton. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02413naa a2200229 a 4500
001 1909415
005 2011-12-14
008 2011 bl uuuu u00u1 u #d
022 $a0014-2336
100 1 $aCOSTA, J. G. da
245 $aDifferential preference of Capsicum spp. cultivars by Aphis gossypii is conferred by variation in volatile semiochemistry.$h[electronic resource]
260 $c2011
520 $aThe aim of this study was to demonstrate that Capsicum spp. cultivars are differentially preferred by the cotton aphid, Aphis gossypii, and to investigate the role of volatile semiochemicals in conferring differences in host preferences. Two preference assays were conducted in 2008 under greenhouse conditions. Fourteen different commercially available cultivars were grown in cages protected by an anti-aphid net, and were infested 60 days after planting, through the release of ten adult female A. gossypii per plant. The results showed that after a five-day infestation period, statistically significant differences in the mean number of A. gossypii between cultivars were observed, with Sweet Pepper Hybrid Green Belt (SPHGB) being one of the cultivars with the lowest number of A. gossypii per plant. To test the hypothesis that the preference of cultivars was associated with release of volatile, Capsicum spp-derived emiochemicals, olfactometer behavior bioassays were conducted with A. gossypii, using volatile organic compounds (VOCs) collected from non-preferred SPHGB and preferred SPAB cultivars. A. gossypii was significantly repelled only by the VOCs of infested SPHGB. Furthermore, coupled gas chromatography-mass spectrometry (GC-MS) analysis of VOCs released by plants prior to, and after, A. gossypii infestation, revealed that the non-preferred SPHGB cultivar released nine additional compounds after infestation, including 6-methyl-5-hepten-2-one, a known plant defense semiochemical involved in plant—aphid interactions. These data suggest that non-preferred cultivars releasing this semiochemical have the potential to be used in reeding programs aimed at producing A. gossypii-resistant Capsicum spp. cultivars.
650 $acotton
650 $aAlgodão
653 $aDisease
700 1 $aPIRES, E. V.
700 1 $aRIFFEL, A.
700 1 $aBIRKETT, M. A.
700 1 $aBLEICHER, E.
700 1 $aSANTANA, A. E. G.
773 $tEuphytica, Wageningen, Holanda$gv. 177, p. 299?307, 2011.
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