caa a22 4500 445323531 CHVBK 20180317142712.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10681-010-0250-8 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0250-8 Differential preference of Capsicum spp. cultivars by Aphis gossypii is conferred by variation in volatile semiochemistry [Elektronische Daten] [João da Costa, Edjane Pires, Alessandro Riffel, Michael Birkett, Ervino Bleicher, Antônio Sant'Ana] 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 60days 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 semiochemicals, 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 breeding programs aimed at producing A. gossypii-resistant Capsicum spp. cultivars. Springer Science+Business Media B.V., 2010 Capsicum spp nationallicence Aphis gossypii nationallicence Plant breeding nationallicence Semiochemicals nationallicence Resistance nationallicence da Costa João Embrapa Tabuleiros Costeiros, Tabuleiro do Martins, P.O. Box 2013, 57061-970, Maceió, AL, Brazil aut Pires Edjane Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57092-970, Maceió, AL, Brazil aut Riffel Alessandro Embrapa Tabuleiros Costeiros, Tabuleiro do Martins, P.O. Box 2013, 57061-970, Maceió, AL, Brazil aut Birkett Michael Department of Biological Chemistry, Rothamsted Research, AL5 2JQ, Harpenden, Herts, UK aut Bleicher Ervino Departamento de Fitotecnia, Universidade Federal do Ceará (UFC), Campus do Pici, 60451-970, Fortaleza, CE, Brazil aut Sant'Ana Antônio Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57092-970, Maceió, AL, Brazil aut Euphytica Springer Netherlands 177/3(2011-02-01), 299-307 0014-2336 177:3<299 2011 177 10681 https://doi.org/10.1007/s10681-010-0250-8 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0250-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- da Costa João Embrapa Tabuleiros Costeiros, Tabuleiro do Martins, P.O. Box 2013, 57061-970, Maceió, AL, Brazil aut NATIONALLICENCE 700 1- Pires Edjane Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57092-970, Maceió, AL, Brazil aut NATIONALLICENCE 700 1- Riffel Alessandro Embrapa Tabuleiros Costeiros, Tabuleiro do Martins, P.O. Box 2013, 57061-970, Maceió, AL, Brazil aut NATIONALLICENCE 700 1- Birkett Michael Department of Biological Chemistry, Rothamsted Research, AL5 2JQ, Harpenden, Herts, UK aut NATIONALLICENCE 700 1- Bleicher Ervino Departamento de Fitotecnia, Universidade Federal do Ceará (UFC), Campus do Pici, 60451-970, Fortaleza, CE, Brazil aut NATIONALLICENCE 700 1- Sant'Ana Antônio Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57092-970, Maceió, AL, Brazil aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 177/3(2011-02-01), 299-307 0014-2336 177:3<299 2011 177 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer