Article (Scientific journals)
New slow release mixture of (E)-β-farnesene with methyl salicylate to enhance aphid biocontrol efficacy in wheat ecosystem.
Liu, Jiahui; Zhao, Xiaojing; Zhan, Yidi et al.
2021In Pest Management Science, 77 (7), p. 3341-3348
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Keywords :
Triticum aestivum; behavioral manipulation; biological control; ecological service; semiochemical release; wheat aphid; Pheromones; Salicylates; Sesquiterpenes; beta-farnesene; methyl salicylate; Animals; Ecosystem; Pheromones/pharmacology; Triticum; Aphids; Agronomy and Crop Science; Insect Science; General Medicine
Abstract :
[en] Semiochemical use is a promising way to reduce damage from pests by improving natural control in agro-ecosystems. The aphid alarm pheromone (E)-β-farnesene (EβF) and herbivore-induced methyl salicylate (MeSA) are two volatile cues to induce changes in aphid behavior with functional significance. Because of limitations related to the volatility and oxidization of EβF and MeSA under natural conditions, slow-release and antioxidant techniques should be developed and optimized before application. Here, a slow-release alginate bead of EβF mixed with MeSA was first designed and manufactured. We hypothesized that a mixture of these two semiochemicals could be effective in controlling Sitobion miscanthi in wheat crops. Both MeSA and EβF in alginate beads were released stably and continuously for at least 15 days in the laboratory, whereas EβF in paraffin oil and pure MeSA were released for only 2 and 7 days, respectively. In 2018 field experiments, EβF and MeSA alone or in association significantly decreased the abundance of alate and apterous aphids. An increased abundance of mummified aphids enhanced by higher parasitism rates was observed when using EβF and MeSA in association, with a significant reduction of apterous abundance, more so than EβF or MeSA alone. In 2019, plots treated with a mixture of EβF and MeSA showed significantly decreased abundance of alate and apterous aphids with higher parasitism rates compared with the control. The new slow-release alginate bead containing a mixture of EβF with MeSA could be the most efficient formulation to control S. miscanthi population by attracting parasitoids in the wheat agro-ecosystem. © 2021 Society of Chemical Industry.
Disciplines :
Agriculture & agronomy
Author, co-author :
Liu, Jiahui  ;  Université de Liège - ULiège > TERRA Research Centre ; College of Plant Protection, Shandong Agricultural University, Taian, China
Zhao, Xiaojing;  College of Plant Protection, Shandong Agricultural University, Taian, China
Zhan, Yidi ;  College of Plant Protection, Shandong Agricultural University, Taian, China
Wang, Kang ;  College of Plant Protection, Shandong Agricultural University, Taian, China ; Supervision Division, Taizhou Customs of the People's Republic of China, Taizhou, China
Francis, Frédéric  ;  Université de Liège - ULiège > GxABT : Services généraux du site > Site GxABT - Relations internationales ; College of Plant Protection, Shandong Agricultural University, Taian, China
Liu, Yong ;  College of Plant Protection, Shandong Agricultural University, Taian, China
Language :
English
Title :
New slow release mixture of (E)-β-farnesene with methyl salicylate to enhance aphid biocontrol efficacy in wheat ecosystem.
Publication date :
July 2021
Journal title :
Pest Management Science
ISSN :
1526-498X
eISSN :
1526-4998
Publisher :
John Wiley and Sons Ltd, England
Volume :
77
Issue :
7
Pages :
3341-3348
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
National Key R&D Program of China, Grant/Awarsd Number: 2017YFD0201705
Available on ORBi :
since 11 May 2022

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