Insect egg-induced innate immunity: Who benefits?

Stahl, Elia; Maier, Louis-Philippe; Reymond, Philippe

doi:10.1371/journal.ppat.1011072

Cited by 4 publications

(1 citation statement)

References 41 publications

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“…A study by (Peñaflor et al, 2011) found that oviposition by FAW on maize plants was associated with a decreased emission of constitutively emitted volatiles as well as a suppression of those that are induced upon herbivory. Suppression of plant defenses by insect eggs has also been reported for Arabidopsis (Bruessow et al 2010), although the opposite may also be the case (Stahl et al, 2023). In our case, we observed decreased emission of constitutive compounds in the MD as well as the MD + OS treatment.…”

Section: Discussionsupporting

confidence: 81%

Field evidence for the role of plant volatiles induced by caterpillar-derived elicitors in the prey location behavior of predatory social wasps

Grof-Tisza,

Turlings,

Bustos-Segura

et al. 2024

Preprint

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One assumed function of herbivore-induced plant volatiles (HIPVs) is to attract natural enemies of the inducing herbivores. Field evidence for this is scarce and often indirect. Also, the assumption that elicitors in insect oral secretions that trigger the volatile emissions are essential for attraction of natural enemies has not yet been demonstrated under field conditions. After observing social wasps removing caterpillars from maize plants in an agricultural field, we hypothesized that these wasps use HIPVs to locate their prey. To test this, we conducted an experiment that simultaneously explored the importance of caterpillar oral secretions in the interaction. We found that Spodoptera caterpillars placed on mechanically damaged plants treated with oral secretion were more likely to be attacked by wasps compared to caterpillars on plants that were only mechanically wounded. Both of the the latter treatments were considerably more attractive than plants that were only treated with oral secretion or left untreated. Subsequent analyses of headspace volatiles confirmed differences in emitted volatiles that likely account for the differential predation events across the treatments. These findings highlight the importance of HIPVs in prey location by social wasps and provide evidence for the role that elicitors play in inducing attractive odor blends.

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Section: Discussionsupporting

confidence: 81%

Field evidence for the role of plant volatiles induced by caterpillar-derived elicitors in the prey location behavior of predatory social wasps

Grof-Tisza,

Turlings,

Bustos-Segura

et al. 2024

Preprint

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Characterization and levels of resistance in Coffea arabica × Coffea racemosa hybrids to Leucoptera coffeella

Costa,

Souza,

Carvalho

et al. 2024

J Pest Sci

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Coffee leaf miner (CLM) Leucoptera coffeella stands out as a primary insect pest of arabica coffee plants. Coffee breeding for CLM-resistance has used the species Coffea racemosa as gene donor for C. arabica, resulting in the development of the resistant commercial hybrid 'Siriema AS1'. However, no previous study has characterized the resistance, and whether there is variation in the levels expressed in progenies of 'Siriema' to CLM. This study aimed to characterize the type, by antixenosis or antibiosis, and the levels of resistance in segregating progenies of 'Siriema' plants to CLM. Experiments were conducted under laboratory conditions with arti cial infestation of CLM adults in oviposition cages, where dualchoice preference assays compared each tested 'Siriema' progeny with the susceptible cv. Arara. A follow-up no-choice assay evaluated ve selected 'Siriema' progenies on the development of CLM compared to 'Arara'. As main results, 'Siriema' progenies were equally susceptible to CLM oviposition, and were overall stimulant relative to cv. Arara. However, there was low CLM larval survival and injury intensity on the selected 'Siriema' genotypes, indicating the expression of moderate levels of antibiosisresistance, while 'Arara' and one 'Siriema' progeny were moderately susceptible. These ndings further our understanding on the type and levels of resistance in 'Siriema' genotypes, aiding the development of resistant coffee hybrids and deployment of management strategies to CLM. Key MessagesCoffee leaf miner (CLM), Leucoptera coffeella, is a key pest of coffee crops 'Siriema' hybrid is CLM-resistant, but the resistance has not yet been characterized Progenies of 'Siriema' were equally or more oviposited by CLM than cv. Arara Most progenies of 'Siriema' caused larval mortality and reduced injury of CLM 'Siriema' progenies express resistance to CLM with varying levels of antibiosis

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Characterization and levels of resistance in Coffea arabica ×Coffea racemosa hybrids to Leucoptera coffeella

Costa,

Souza,

Carvalho

et al. 2024

Preprint

View full text Add to dashboard Cite

Coffee leaf miner (CLM) Leucoptera coffeella stands out as a primary insect pest of arabica coffee plants. Coffee breeding for CLM-resistance has used the species Coffea racemosa as gene donor for C. arabica, resulting in the development of the resistant commercial hybrid ‘Siriema AS1’. However, no previous study has characterized the resistance, and whether there is variation in the levels expressed in progenies of ‘Siriema’ to CLM. This study aimed to characterize the type, by antixenosis or antibiosis, and the levels of resistance in segregating progenies of ‘Siriema’ plants to CLM. Experiments were conducted under laboratory conditions with artificial infestation of CLM adults in oviposition cages, where dual-choice preference assays compared each tested ‘Siriema’ progeny with the susceptible cv. Arara. A follow-up no-choice assay evaluated five selected ‘Siriema’ progenies on the development of CLM compared to ‘Arara’. As main results, ‘Siriema’ progenies were equally susceptible to CLM oviposition, and were overall stimulant relative to cv. Arara. However, there was low CLM larval survival and injury intensity on the selected ‘Siriema’ genotypes, indicating the expression of moderate levels of antibiosis-resistance, while ‘Arara’ and one ‘Siriema’ progeny were moderately susceptible. These findings further our understanding on the type and levels of resistance in ‘Siriema’ genotypes, aiding the development of resistant coffee hybrids and deployment of management strategies to CLM.

show abstract

Insect egg-induced innate immunity: Who benefits?

Cited by 4 publications

References 41 publications

Field evidence for the role of plant volatiles induced by caterpillar-derived elicitors in the prey location behavior of predatory social wasps

Field evidence for the role of plant volatiles induced by caterpillar-derived elicitors in the prey location behavior of predatory social wasps

Characterization and levels of resistance in Coffea arabica × Coffea racemosa hybrids to Leucoptera coffeella

Characterization and levels of resistance in Coffea arabica ×Coffea racemosa hybrids to Leucoptera coffeella

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