2018
DOI: 10.1111/1744-7917.12631
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High levels of arbuscular mycorrhizal fungus colonization on Medicago truncatula reduces plant suitability as a host for pea aphids (Acyrthosiphon pisum)

Abstract: This study sheds light on a poorly understood area in insect-plant-microbe interactions, focusing on aphid probing and feeding behavior on plants with varying levels of arbuscular mycorrhizal (AM) fungus root colonization. It investigates a commonly occurring interaction of three species: pea aphid Acyrthosiphon pisum, barrel medic Medicago truncatula, and the AM fungus Rhizophagus irregularis, examining whether aphid-feeding behavior changes when insects feed on plants at different levels of AM fungus coloniz… Show more

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Cited by 20 publications
(15 citation statements)
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“…The response of aphids to AM fungal colonization of their host plants varies widely, from positive [24,[26][27][28][29][30][31] to neutral [13,14,[32][33][34][35] or negative [27,29,30,[36][37][38][39]. In general, specialist and generalist aphids benefit from feeding on mycorrhizal plants [16,24,[26][27][28][29][30]39], while specialist chewing herbivores, such as caterpillars, are negatively affected by AM fungal colonization of their host plants [13,16].…”
Section: Introductionmentioning
confidence: 99%
“…The response of aphids to AM fungal colonization of their host plants varies widely, from positive [24,[26][27][28][29][30][31] to neutral [13,14,[32][33][34][35] or negative [27,29,30,[36][37][38][39]. In general, specialist and generalist aphids benefit from feeding on mycorrhizal plants [16,24,[26][27][28][29][30]39], while specialist chewing herbivores, such as caterpillars, are negatively affected by AM fungal colonization of their host plants [13,16].…”
Section: Introductionmentioning
confidence: 99%
“…It is also possible that A. nerii abundances were not affected by AMF in this experiment. Whether aphids benefit, are unaffected, or are negatively affected by AMF colonization of their host plants depends on the plant and AMF species, plant age and developmental stage of the symbiosis (Garzo et al, 2020;Koricheva et al, 2009;Meier & Hunter, 2018b;Tomczak & Müller, 2017). Indeed, in this experiment, milkweed plants were older, and aphid populations developed over a much longer time, than in our previous greenhouse experiment (Meier & Hunter, 2018b).…”
Section: Discussionmentioning
confidence: 70%
“…EPG variables describing aphid probing behavior were calculated using the Excel-VBA Macro [53], accessed from www.epgsystems.eu (accessed on 1 June 2021) and the means and standard deviations were subsequently calculated using the EPG analysis Excel worksheet created for this study [48,49]. In non-sequential variables (such as total durations of specific EPG waveforms and the number of EPG-recorded aphid activities), when a given waveform had not been recorded for an individual, the duration of that waveform was given the value of 0.…”
Section: Discussionmentioning
confidence: 99%
“…Aphid activities visualized as EPG waveforms were analyzed according to their frequency and duration and presented in a configuration related to activities in peripheral and vascular tissues. The interpretation of EPG variables in terms of plant suitability to the aphids follows the interpretation provided by detailed studies on aphid-plant interactions [27,28,30,31,40,41,45,46,48,49].…”
Section: Monitoring Of Aphid Probing Behavior (Epg No-choice Test)mentioning
confidence: 90%