Semiochemicals produced by fungal bark beetle symbiont Endoconidiophora rufipennis and the discovery of an anti-attractant for Ips typographus.
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2023
2023
Historique:
received:
21
07
2022
accepted:
20
03
2023
medline:
10
4
2023
entrez:
6
4
2023
pubmed:
7
4
2023
Statut:
epublish
Résumé
Bark beetles vector symbiotic fungal species into their host trees during mass attacks. The symbiotic relationship with blue stain fungi of the Ascomycetes, including genera of Endoconidiophora (syn. = Ceratocystis), promotes successful establishment whereby the microbes help to overcome the host trees' defence and degrade toxic resins. This is the first study to evaluate both the volatile emissions from an insect-associated blue stain fungus over time and the insect response in a field trapping experiment. Volatile emissions from isolates of Endoconidiophora rufipennis (ER) were collected by solid-phase microextraction (SPME) and analysed by gas chromatography-mass spectroscopy (GC-MS) over a period of 30 days. This virulent North American fungus is closely related to E. polonica, a symbiotic fungus known from Eurasian spruce bark beetle Ips typographus.Nine volatiles were emitted by ER in substantial amounts: isoamyl acetate, sulcatone, 2-phenethyl acetate, geranyl acetone, geranyl acetate, citronellyl acetate, (R)- and (S)-sulcatol, and (R)-sulcatol acetate. A late peaking compound was geranyl acetone. In the field trapping experiment, three of the fungal volatiles (geranyl acetone, 2-phenethyl acetate and sulcatone) were tested in combination with a synthetic aggregation pheromone for I. typographus. Traps with geranyl acetone attracted lower numbers of I. typographus compared to traps with 2-phenethyl acetate, sulcatone or the pheromone alone as a control. The results showed that geranyl acetone acts as an anti-attractant and may act naturally on I. typographus as a cue from an associated fungus to signal an overexploited host.
Identifiants
pubmed: 37023040
doi: 10.1371/journal.pone.0283906
pii: PONE-D-22-20345
pmc: PMC10079057
doi:
Substances chimiques
geranylacetone
9B7RY79U9Z
sulcatol
33321H09GI
2-phenylethyl acetate
67733846OW
methylheptenone
448353S93V
Pheromones
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0283906Informations de copyright
Copyright: © 2023 Lindmark et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
Références
Sci Rep. 2019 Dec 20;9(1):19570
pubmed: 31863031
J Insect Physiol. 1974 Oct;20(10):1895-1900
pubmed: 4418080
Environ Entomol. 2007 Dec;36(6):1384-96
pubmed: 18284766
Pest Manag Sci. 2022 May;78(5):1992-1999
pubmed: 35104043
J Chem Ecol. 1990 Apr;16(4):1385-97
pubmed: 24263735
New Phytol. 2005 Aug;167(2):353-75
pubmed: 15998390
Front Microbiol. 2021 Jun 04;12:695167
pubmed: 34177876
CBE Life Sci Educ. 2013 Fall;12(3):345-51
pubmed: 24006382
ISME J. 2019 Jun;13(6):1535-1545
pubmed: 30770902
PLoS One. 2014 Jan 14;9(1):e85381
pubmed: 24454855
J Pest Sci (2004). 2021;94(3):591-614
pubmed: 34720785
Nat Commun. 2017 Aug 24;8(1):337
pubmed: 28835618
J Chem Ecol. 1995 Jul;21(7):1043-63
pubmed: 24234418
J Chem Ecol. 2007 Feb;33(2):391-404
pubmed: 17216361
J Chem Ecol. 2020 Jan;46(1):30-39
pubmed: 31808075
ISME J. 2019 Jul;13(7):1788-1800
pubmed: 30872804
Science. 1976 May 28;192(4242):894-6
pubmed: 1273573
J Chem Ecol. 2012 Apr;38(4):378-88
pubmed: 22477026
J Chem Ecol. 2016 Sep;42(9):952-969
pubmed: 27687998
J Exp Biol. 2010 Oct 1;213(Pt 19):3332-9
pubmed: 20833926
J Chem Ecol. 1984 Sep;10(9):1349-61
pubmed: 24317586