Article (Scientific journals)
Induced Systemic Resistance by a Plant Growth-Promoting Rhizobacterium Impacts Development and Feeding Behavior of Aphids
Serteyn, Laurent; Quaghebeur, Céleste; Ongena, Marc et al.
2020In Insects, 11 (4)
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Keywords :
Acyrthosiphon pisum; Bacillus amyloliquefaciens; electropenetrography; Hamiltonella defensa; interactions; plant growth-promoting rhizobacteria; Vicia faba
Abstract :
[en] The effects of microorganisms on plant-insect interactions have usually been underestimated. While plant growth-promoting rhizobacteria (PGPR) are known to induce plant defenses, endosymbiotic bacteria hosted by herbivorous insects are often beneficial to the host. Here, we aimed to assess whether PGPR-induced defenses in broad bean plants impact the pea aphid, depending on its genotype and the presence of endosymbionts. We estimated aphid reproduction, quantified defense- and growth-related phytohormones by GC-MS, and measured different plant growth and physiology parameters, after PGPR treatment. In addition, we recorded the feeding behavior of aphids by electropenetrography. We found that the PGPR treatment of broad bean plants reduced the reproduction of one of the pea aphid clones. We highlighted a phenomenon of PGPR-induced plant defense priming, but no noticeable plant growth promotion. The main changes in aphid probing behavior were related to salivation events into phloem sieve elements. We suggest that the endosymbiont Hamiltonella defensa played a key role in plant-insect interactions, possibly helping aphids to counteract plant-induced resistance and allowing them to develop normally on PGPR-treated plants. Our results imply that plant- and aphid-associated microorganisms add greater complexity to the outcomes of aphid-plant interactions.
Disciplines :
Entomology & pest control
Author, co-author :
Serteyn, Laurent ;  Université de Liège - ULiège > Département GxABT > Gestion durable des bio-agresseurs
Quaghebeur, Céleste
Ongena, Marc ;  Université de Liège - ULiège > Département GxABT > Microbial, food and biobased technologies
Cabrera, Nuri
Barrera, Andrea
Molina-Montenegro, Marco
Francis, Frédéric  ;  Université de Liège - ULiège > Département GxABT > Gestion durable des bio-agresseurs
Ramirez, Claudio
Language :
English
Title :
Induced Systemic Resistance by a Plant Growth-Promoting Rhizobacterium Impacts Development and Feeding Behavior of Aphids
Publication date :
08 April 2020
Journal title :
Insects
eISSN :
2075-4450
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Switzerland
Volume :
11
Issue :
4
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 June 2020

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