02393naa a2200301 a 450000100080000000500110000800800410001902400330006010000220009324501440011526000090025930000100026852014920027865000190177065000180178965300290180765300240183665300130186070000260187370000200189970000300191970000230194970000290197270000190200170000150202070000220203577300340205721584132023-11-16       2023    bl uuuu     u00u1 u    #d7 a10.3390/insects140907622DOI1 aRIBEIRO, T. F. L.  aVolatile organic compounds from cassava plants confer resistance to the Whitefly Aleurothrixus aepim (Goeldi, 1886).h[electronic resource]  c2023  a14 p.  aCassava 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)-β-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.  aSemiochemicals  aEuphorbiaceae  aManihot esculenta Crantz  aRepellence activity  aTerpenes1 aOLIVEIRA, D. J. DE A.1 aCOSTA, J. G. da1 aMARTINEZ GUTIERREZ, M. A.1 aOLIVEIRA, E. J. de1 aRIBEIRO JUNIOR, K. A. L.1 aGOULART, H. F.1 aRIFFEL, A.1 aSANTANA, A. E. G.  tInsectsgv. 14, n. 762, 2023.