| Title: | "Volatile Organic Compounds from Cassava Plants Confer Resistance to the Whitefly Aleurothrixus aepim (Goeldi, 1886)" |
| Author(s): | Ribeiro TFL; Oliveira DJA; da Costa JG; Gutierrez MAM; de Oliveira EJ; Ribeiro Junior KAL; Goulart HF; Riffel A; Santana AEG; |
| Address: | "Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-900, AL, Brazil. Embrapa Food and Territories, Maceio 57020-050, AL, Brazil. Natural Product Research Laboratory (LPqRN), Campus of Engineering and Agrarian Science, Federal University of Alagoas (UFAL), Maceio 57072-900, AL, Brazil. Embrapa Mandioca e Fruticultura, Cruz das Almas 44380-000, BA, Brazil" |
| ISSN/ISBN: | 2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking) |
| Abstract: | "Cassava is an essential tuber crop used to produce food, feed, and beverages. Whitefly pests, including Aleurothrixus aepim (Goeldi, 1886) (Hemiptera: Aleyrodidae), significantly affect cassava-based agroecosystems. Plant odours have been described as potential pest management tools, and the cassava clone M Ecuador 72 has been used by breeders as an essential source of resistance. In this study, we analysed and compared the volatile compounds released by this resistant clone and a susceptible genotype, BRS Jari. Constitutive odours were collected from young plants and analysed using gas chromatography-mass spectrometry combined with chemometric tools. The resistant genotype released numerous compounds with previously described biological activity and substantial amounts of the monoterpene (E)-beta-ocimene. Whiteflies showed non-preferential behaviour when exposed to volatiles from the resistant genotype but not the susceptible genotype. Furthermore, pure ocimene caused non-preferential behaviour in whiteflies, indicating a role for this compound in repellence. This report provides an example of the intraspecific variation in odour emissions from cassava plants alongside information on odorants that repel whiteflies; these data can be used to devise whitefly management strategies. A better understanding of the genetic variability in cassava odour constituents and emissions under field conditions may accelerate the development of more resistant cassava varieties" |
| Keywords: | Euphorbiaceae Manihot esculenta Crantz repellence activity semiochemicals terpenes; |
| Notes: | "PubMed-not-MEDLINERibeiro, Thyago Fernando Lisboa Oliveira, Demetrios Jose de Albuquerque da Costa, Joao Gomes Gutierrez, Miguel Angel Martinez de Oliveira, Eder Jorge Ribeiro Junior, Karlos Antonio Lisboa Goulart, Henrique Fonseca Riffel, Alessandro Santana, Antonio Euzebio Goulart eng Switzerland 2023/09/27 Insects. 2023 Sep 13; 14(9):762. doi: 10.3390/insects14090762" |
