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New Phytol


Title:Insect species richness affects plant responses to multi-herbivore attack
Author(s):Fernandez de Bobadilla M; Bourne ME; Bloem J; Kalisvaart SN; Gort G; Dicke M; Poelman EH;
Address:"Laboratory of Entomology, Wageningen University and Research Centre, Droevendaalsesteeg 1, Wageningen, 6708PB, the Netherlands. Biometris, Wageningen University and Research Centre, Droevendaalsesteeg 1, Wageningen, 6708PB, the Netherlands"
Journal Title:New Phytol
Year:2021
Volume:20210215
Issue:6
Page Number:2333 - 2345
DOI: 10.1111/nph.17228
ISSN/ISBN:1469-8137 (Electronic) 0028-646X (Print) 0028-646X (Linking)
Abstract:"Plants are often attacked by multiple insect herbivores. How plants deal with an increasing richness of attackers from a single or multiple feeding guilds is poorly understood. We subjected black mustard (Brassica nigra) plants to 51 treatments representing attack by an increasing species richness (one, two or four species) of either phloem feeders, leaf chewers, or a mix of both feeding guilds when keeping total density of attackers constant and studied how this affects plant resistance to subsequent attack by caterpillars of the diamondback moth (Plutella xylostella). Increased richness in phloem-feeding attackers compromised resistance to P. xylostella. By contrast, leaf chewers induced a stronger resistance to subsequent attack by caterpillars of P. xylostella while species richness did not play a significant role for chewing herbivore induced responses. Attack by a mix of herbivores from different feeding guilds resulted in plant resistance similar to resistance levels of plants that were not previously exposed to herbivory. We conclude that B. nigra plants channel their defence responses stronger towards a feeding-guild specific response when under multi-species attack by herbivores of the same feeding guild, but integrate responses when simultaneously confronted with a mix of herbivores from different feeding guilds"
Keywords:Animals *Herbivory Larva *Moths Mustard Plant Phloem Plutella xylostella herbivore species richness herbivore-induced plant gene expression multi-herbivore attack phytohotmonal crosstalk plant-mediated interactions;
Notes:"MedlineFernandez de Bobadilla, Maite Bourne, Mitchel E Bloem, Janneke Kalisvaart, Sarah N Gort, Gerrit Dicke, Marcel Poelman, Erik H eng Research Support, Non-U.S. Gov't England 2021/01/24 New Phytol. 2021 Sep; 231(6):2333-2345. doi: 10.1111/nph.17228. Epub 2021 Feb 15"

 
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