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Plant domestication decreases both constitutive and induced chemical defences by direct selection against defensive traits

in:Nature Research journals • PubMed • Google Scholar Search for Rieta Gols in:Nature Research journals • PubMed • Google Scholar Search for Marta Francisco in:Nature Research journals • PubMed • Google

Ant-like Traits in Wingless Parasitoids Repel Attack from Wolf Spiders

A recent study showed that a wingless parasitoid, Gelis agilis, exhibits a suite of ant-like traits that repels attack from wolf spiders. When agitated, G. agilis secreted 6-methyl-5-hepten-2-one (sulcatone), which a small number of ant species produce as an alarm/panic pheromone. Here, we tested four Gelis parasitoid species, occurring in the same food chain and microhabitats...

Seasonal and herbivore-induced dynamics of foliar glucosinolates in wild cabbage (Brassica oleracea)

Levels of plant secondary metabolites are not static and often change in relation to plant ontogeny. They also respond to abiotic and biotic changes in the environment, e.g., they often increase in response to biotic stress, such as herbivory. In contrast with short-lived annual plant species, especially those with growing periods of less than 2–3 months, investment in defensive...

Oviposition Preference for Young Plants by the Large Cabbage Butterfly (Pieris brassicae ) Does not Strongly Correlate with Caterpillar Performance

The effects of temporal variation in the quality of short-lived annual plants on oviposition preference and larval performance of insect herbivores has thus far received little attention. This study examines the effects of plant age on female oviposition preference and offspring performance in the large cabbage white butterfly Pieris brassicae. Adult female butterflies lay...

Does Aphid Infestation Interfere with Indirect Plant Defense against Lepidopteran Caterpillars in Wild Cabbage?

. Thus, the interactive effect of aphids and hosts Rieta Gols on plant volatile production and parasitoid attraction can be dynamic and parasitoid specific. The characteristics of the multi-component

Symbionts protect aphids from parasitic wasps by attenuating herbivore-induced plant volatiles

AffiliationsLaboratory of Entomology, Wageningen University, P.O. Box 16,, 6700AA, Wageningen, The NetherlandsEnric Frago, Mukta Mala, Berhane T. Weldegergis, Chenjiao Yang, Rieta Gols & Marcel DickeCIRAD, UMR PVBMT ... . Godfray in:Nature Research journals • PubMed • Google Scholar Search for Rieta Gols in:Nature Research journals • PubMed • Google Scholar Search for Marcel Dicke in:Nature Research journals • PubMed

Effects of population-related variation in plant primary and secondary metabolites on aboveground and belowground multitrophic interactions

Insects feeding on aboveground and belowground tissues can influence each other through their shared plant and this is often mediated by changes in plant chemistry. We examined the effects of belowground root fly (Delia radicum) herbivory on the performance of an aboveground herbivore (Plutella xylostella) and its endoparasitoid wasp (Cotesia vestalis). Insects were reared on...

Interactive Effects of Cabbage Aphid and Caterpillar Herbivory on Transcription of Plant Genes Associated with Phytohormonal Signalling in Wild Cabbage

Kroes 0 Wen Liu 0 Rieta Gols 0 0 Laboratory of Entomology, Wageningen University , P.O. Box 16, 6700 AA, Wageningen , The Netherlands Plants are commonly attacked by a variety of insect herbivores and

Plant Quantity Affects Development and Survival of a Gregarious Insect Herbivore and Its Endoparasitoid Wasp

Virtually all studies of plant-herbivore-natural enemy interactions focus on plant quality as the major constraint on development and survival. However, for many gregarious feeding insect herbivores that feed on small or ephemeral plants, the quantity of resources is much more limiting, yet this area has received virtually no attention. Here, in both lab and semi-field...

Interactions Between a Belowground Herbivore and Primary and Secondary Root Metabolites in Wild Cabbage

Plants are attacked by both above- and belowground herbivores. Toxic secondary compounds are part of the chemical defense arsenal of plants against a range of antagonists, and are subject to genetic variation. Plants also produce primary metabolites (amino acids, nutrients, sugars) that function as essential compounds for growth and survival. Wild cabbage populations growing on...

Population-Related Variation in Plant Defense more Strongly Affects Survival of an Herbivore than Its Solitary Parasitoid Wasp

Jeffrey A. Harvey 0 Rieta Gols 0 0 R. Gols Laboratory of Entomology, Plant Sciences Group, Wageningen University , PO Box 8031, 6700 EH Wageningen, The Netherlands 1 ) Department of Terrestrial

Development of Mamestra brassicae and its solitary endoparasitoid Microplitis mediator on two populations of the invasive weed Bunias orientalis

The warty cabbage Bunias orientalis is an invasive pest in much of central Europe, including much of Germany since the 1980s, whereas in other countries, such as The Netherlands, it is a less common exotic species. Here, healthy larvae of Mamestra brassicae, which has been found feeding on B. orientalis plants in Germany, and larvae parasitized by one of its major larval...

Synergism in the effect of prior jasmonic acid application on herbivore-induced volatile emission by Lima bean plants: transcription of a monoterpene synthase gene and volatile emission

Jasmonic acid (JA) plays a central role in induced plant defence e.g. by regulating the biosynthesis of herbivore-induced plant volatiles that mediate the attraction of natural enemies of herbivores. Moreover, exogenous application of JA can be used to elicit plant defence responses similar to those induced by biting-chewing herbivores and mites that pierce cells and consume...

Reciprocal crosstalk between jasmonate and salicylate defence-signalling pathways modulates plant volatile emission and herbivore host-selection behaviour

The jasmonic acid (JA) and salicylic acid (SA) signalling pathways, which mediate induced plant defence responses, can express negative crosstalk. Limited knowledge is available on the effects of this crosstalk on host-plant selection behaviour of herbivores. We report on temporal and dosage effects of such crosstalk on host preference and oviposition-site selection behaviour of...

Differing Host Exploitation Efficiencies in Two Hyperparasitoids: When is a ‘Match Made in Heaven’?

Jeffrey A. Harvey 0 Roel Wagenaar 0 Rieta Gols 0 0 R. Gols Department of Entomology, Wageningen University and Research Centre , P.O. Box 8031, 6700 EH Wageningen, The Netherlands Host exploitation

Plant-mediated effects in the Brassicaceae on the performance and behaviour of parasitoids

Direct and indirect plant defences are well studied, particularly in the Brassicaceae. Glucosinolates (GS) are secondary plant compounds characteristic in this plant family. They play an important role in defence against herbivores and pathogens. Insect herbivores that are specialists on brassicaceous plant species have evolved adaptations to excrete or detoxify GS. Other insect...

Smelling the Wood from the Trees: Non-Linear Parasitoid Responses to Volatile Attractants Produced by Wild and Cultivated Cabbage

Despite a large number of studies on herbivore-induced plant volatiles (HIPVs), little is known about which specific compounds are used by natural enemies to locate prey- or host- infested plants. In addition, the role of HIPVs in attracting natural enemies has been restricted largely to agricultural systems. Differences in volatile blends emitted by cultivars and plants that...

Plant Volatiles Induced by Herbivore Egg Deposition Affect Insects of Different Trophic Levels

Plants release volatiles induced by herbivore feeding that may affect the diversity and composition of plant-associated arthropod communities. However, the specificity and role of plant volatiles induced during the early phase of attack, i.e. egg deposition by herbivorous insects, and their consequences on insects of different trophic levels remain poorly explored. In...

Development of an Insect Herbivore and its Pupal Parasitoid Reflect Differences in Direct Plant Defense

Jeffrey A. Harvey Rieta Gols Roel Wagenaar T. Martijn Bezemer In nature, plants defend themselves by production of allelochemicals that are toxic to herbivores. There may be considerable genetic

Consequences of constitutive and induced variation in plant nutritional quality for immune defence of a herbivore against parasitism

The mechanisms through which trophic interactions between species are indirectly mediated by distant members in a food web have received increasing attention in the field of ecology of multitrophic interactions. Scarcely studied aspects include the effects of varying plant chemistry on herbivore immune defences against parasitoids. We investigated the effects of constitutive and...