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Plant Cell Environ

Title:		Effects of far-red light on the behaviour and reproduction of the zoophytophagous predator Macrolophus pygmaeus and its interaction with a whitefly herbivore
Author(s):		Meijer D; Hopkoper S; Weldegergis BT; Westende WV; Gort G; Van Loon JJA; Dicke M;
Address:		"Laboratory of Entomology, Wageningen University, AA Wageningen, The Netherlands. Laboratory of Plant Breeding, Wageningen University, AA Wageningen, The Netherlands. Biometris, Wageningen University, AA Wageningen, The Netherlands"
Journal Title:		Plant Cell Environ
Year:		2023
Volume:		20230913
Issue:
Page Number:		-
DOI:		10.1111/pce.14723
ISSN/ISBN:		1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:		"Plants can detect neighbouring plants through a reduction in the ratio between red and far-red light (R:FR). This provides a signal of plant-plant competition and induces rapid plant growth while inhibiting defence against biotic stress, two interlinked responses designated as the shade avoidance syndrome (SAS). Consequently, the SAS can influence plant-herbivore interactions that could cascade to higher trophic levels. However, little is known about how the expression of the SAS can influence tritrophic interactions. We investigated whether changes in R:FR affect the emission of herbivore-induced plant volatiles (HIPVs), and whether these changes influence the attraction of the zoophytophagous predator Macrolophus pygmaeus. We also studied how the expression of the SAS and subsequent inhibition of plant defences affects the reproduction of M. pygmaeus in both the presence and absence of the greenhouse whitefly (WF) (Trialeurodes vaporariorum) as arthropod prey. The results show that changes in R:FR have little effect on HIPV emissions and predator attraction. However, a reduction in R:FR leads to increased reproduction of both the predator and the WFs. We discuss that shade avoidance responses can increase the population development of M. pygmaeus through a combination of reduced plant defences and increased herbivore densities"
Keywords:		Trialeurodes vaporariorum arthropod performance predator-prey interactions shade avoidance tritrophic interactions volatiles;
Notes:		"PublisherMeijer, Davy Hopkoper, Syb Weldegergis, Berhane T Westende, Wendy Van't Gort, Gerrit van Loon, Joop J A Dicke, Marcel eng Nederlandse Organisatie voor Wetenschappelijk Onderzoek/ 2023/09/14 Plant Cell Environ. 2023 Sep 13. doi: 10.1111/pce.14723"