Host Acceptance and Plant Resistance: A Comparative Behavioral Study of Myzus persicae and Acyrthosiphon pisum

Jhou, Yi-Syuan; Poovendhan, Sushanthi; Huang, Li-Hsin; Tsai, Chang‐Her

doi:10.3390/insects12110975

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…Additionally, during the recovery bioassay, aphids exposed to pyrethrin engaged with xylem sap ingestion more frequently than the control ones. According to previous studies, xylem feeding in aphids is more frequent after experiencing a starvation period (Powell and Hardie 2002;Jhou et al 2021). Therefore, aphids that did not ingest phloem sap during the EPG round on pyrethrin-treated plants, being starved and dehydrated, engaged with xylem ingestion as soon as moved to untreated plants for the recovery bioassay.…”

Section: Discussionmentioning

confidence: 96%

Impact of biopesticides on the probing and feeding behavior of Aphis gossypii

Hamouche,

Zippari,

Boucherf

et al. 2024

CABI Agric Biosci

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Background Pesticides-induced mortality has traditionally been the toxicological endpoint on which a chemical is selected for pest management strategies. However, the exposure to a pesticide might also cause behavioral alterations that can dramatically affect the dynamics of pest-plant interaction. Understanding these non-lethal effects is crucial for developing comprehensive and sustainable pest control measures. Methods Here, using the Electrical Penetration Graph (EPG) technique, we evaluated whether biopesticides routinely used in organic or conventional pest management might alter the probing and feeding behavior of the cotton aphid Aphis gossypii on treated plants. The post exposure persistence of feeding alterations when moving the insect onto clean plants was also assessed. The tested biopesticides were chosen for being aphicides or because used in those crops hosts of A. gossypii. Generalised linear mixed models were fitted to analyse the effects of biopesticides on the probing and feeding behavior of aphids, using untreated control data as a model baseline. Results Residuals of Bacillus thuringiensis, Beauveria bassiana, and sulfur significantly affected the dynamics of the stylets intercellular route compared to the control (namely, shorter pathways, fewer and shorter brief intracellular stylets probes, higher and longer derailed stylets events). Mineral oil, orange essential oil and pyrethrin delayed or impaired the onset of phloem sap ingestion. On the other hand, copper and potassium salts promoted feeding. Pyrethrin was the only biopesticides inducing persistent behavioral alterations, with insects displaying a higher frequency of occurrence of xylem ingestion events when moved to untreated plants after exposure. Conclusions Overall, this study demonstrates that biopesticides modulate the aphid-plant interactions by impairing or facilitating the exploitation of the host plant, also affecting the patterns conducive to plant pathogens transmission. This study also highlights the importance of considering in toxicological studies the impact of all the compounds the pest could be exposed to within the agroecosystem, including those not designed for that specific pest.

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Section: Discussionmentioning

confidence: 96%

Impact of biopesticides on the probing and feeding behavior of Aphis gossypii

Hamouche,

Zippari,

Boucherf

et al. 2024

CABI Agric Biosci

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“…However, the much lower number of DEGs induced by infestation in the susceptible strain in our experiment could be explained by the very high susceptibility of GF305 to GPA ( Sauge et al., 1998a ), and/or by the high pre-adaptation of the aphids, since they were reared on this genotype before the experiment. Indeed, aphids continuously adapt their behavior to the plant characteristics, like their resistance level ( Pompon and Pelletier, 2012 ; Jhou et al., 2021 ). Their experience on the plants they are reared on modulates aphids physiology temporarily, like duration of phloem intake, probing frequency, salivation duration ( ten Broeke et al., 2014 ) and the gene expression level of particular effectors related to host utilization ( Eyres et al., 2016 ; Thorpe et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Molecular mechanisms of resistance to Myzus persicae conferred by the peach Rm2 gene: A multi-omics view

et al. 2022

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The transcriptomic and metabolomic responses of peach to Myzus persicae infestation were studied in Rubira, an accession carrying the major resistance gene Rm2 causing antixenosis, and GF305, a susceptible accession. Transcriptome and metabolome showed both a massive reconfiguration in Rubira 48 hours after infestation while GF305 displayed very limited changes. The Rubira immune system was massively stimulated, with simultaneous activation of genes encoding cell surface receptors involved in pattern-triggered immunity and cytoplasmic NLRs (nucleotide-binding domain, leucine-rich repeat containing proteins) involved in effector-triggered immunity. Hypersensitive reaction featured by necrotic lesions surrounding stylet punctures was supported by the induction of cell death stimulating NLRs/helpers couples, as well as the activation of H2O2-generating metabolic pathways: photorespiratory glyoxylate synthesis and activation of the futile P5C/proline cycle. The triggering of systemic acquired resistance was suggested by the activation of pipecolate pathway and accumulation of this defense hormone together with salicylate. Important reduction in carbon, nitrogen and sulphur metabolic pools and the repression of many genes related to cell division and growth, consistent with reduced apices elongation, suggested a decline in the nutritional value of apices. Finally, the accumulation of caffeic acid conjugates pointed toward their contribution as deterrent and/or toxic compounds in the mechanisms of resistance.

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