Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139863
Título: Electrical signalling on Bt and non-Bt cotton plants under stress by Aphis gossypii.
Autoria: PACHÚ, J. K. S.
MACHEDO, F. C. O.
MALAQUIAS, J. P.
RAMALHO, F. de S.
OLIVEIRA, R. F.
FRANCO, F. P.
GODOY, W. A. C.
Afiliação: JÉSSICA K. S. PACHÚ, ESALQ; FRANCYNES C. O. MACEDO, ESALQ; JOSÉ P. MALAQUIAS, UNESP; FRANCISCO DE SOUSA RAMALHO, CNPA; RICARDO F. OLIVEIRA, ESALQ; FLÁVIA PEREIRA FRANCO, ESALQ; WESLEY A. C. GODOY, ESALQ.
Ano de publicação: 2021
Referência: PLoS ONE, v. 16, n. 4, e0249699, p. 1-15, 2021.
Páginas: 15 p.
Conteúdo: Plants have developed various mechanisms to respond specifically to each biotrophic attack. It has been shown that the electrical signals emitted by plants are associated with herbivory stress responses and can lead to the activation of multiple defences. Bt cotton is a genetically modified pest-resistant plant that produces an insecticide from Bacillus thuringiensis (Bt) to control Lepidopteran species. Surprisingly, there is no study?yet, that characterizes the signalling mechanisms in transgenic cotton plants attacked by non-target insects, such as aphids. In this study, we characterized the production of electrical signals on Bt and non-Bt cotton plants infested with Aphis gossypii and, in addition, we characterized the dispersal behaviour of aphids to correlate this behaviour to plant signalling responses. Electrical signalling of the plants was recorded with an extracellular measurement technique. Impressively, our results showed that both Bt and non-Bt cotton varieties, when attacked by A. gossypii, emitted potential variation-type electrical signals and clearly showed the presence of distinct responses regarding their perception and the behaviour ofaphids, with evidence of delay, in terms of signal amount, and almost twice the amount of Cry1F protein was observed on Bt cotton plants at the highest density of insects/plant. We present in our article some hypotheses that are based on plant physiology and insect behaviour to explain the responses found on Bt cotton plants under aphid stress.
Thesagro: Algodão
Defesa Vegetal
Organismo Transgênico
Bacillus Thuringiensis
Aphis Gossypii
NAL Thesaurus: Cotton
Defense mechanisms
Animal stress
Transgenic plants
ISSN: 1932-6203
Digital Object Identifier: 10.1371/journal.pone.0249699
Tipo do material: Artigo de periódico
Acesso: openAccess
Aparece nas coleções:Artigo em periódico indexado (CNPA)

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