RT article T1 Transcriptomic profile of the predatory mite Amblyseius swirskii (Acari: Phytoseiidae) on different host plants A1 Paspati, Angeliki A1 Urbaneja, Alberto A1 González-Cabrera, Joel K1 Acyl sugar K1 Differential expression K1 Phytoseiid K1 H10 Pests of plants K1 U40 Surveying methods K1 Detoxification K1 RNA sequence K1 Trichomes K1 Tomatoes K1 Exudates K1 Pepper AB Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) is a predatory mite, effective at controlling whiteflies and thrips in protected crops. However, on tomato its efficacy as a biocontrol agent is hindered, most probably by the plant trichomes and their exudates. Our aim was to characterize the response of A. swirskii to the tomato trichome exudates and identify three major detoxification gene sets in this species: cytochromes P450 (CYPs), glutathione S-transferases (GSTs) and carboxyl/cholinesterases (CCEs). Mites were exposed separately to tomato and pepper, a favourable host plant for A. swirskii, after which their transcriptional responses were analysed and compared. The de novo transcriptome assembly resulted in 71,336 unigenes with 66.1% of them annotated. Thirty-nine A. swirskii genes were differentially expressed after transfer on tomato leaves when compared to pepper leaves; some of the expressed genes were associated with the metabolism of tomato exudates. Our results illustrate that the detoxification gene sets CYPs, GSTs and CCEs are abundant in A. swirskii, but do not play a significant role when in contact with the tomato exudates. PB Springer Nature SN 0168-8162 (print ISSN) YR 2022 FD 2022 LK http://hdl.handle.net/20.500.11939/8153 UL http://hdl.handle.net/20.500.11939/8153 LA en NO Paspati, A., Urbaneja, A. & González-Cabrera, J. (2022). Transcriptomic profile of the predatory mite Amblyseius swirskii (Acari: Phytoseiidae) on different host plants. Experimental and Applied Acarology, 86, 479-498. DS MINDS@UW RD Feb 4, 2023