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  The role of glucosinolates and the jasmonic acid pathway in resistance of Arabidopsis thaliana against molluskan herbivores

Falk, K., Kästner, J., Bodenhausen, N., Schramm, K., Paetz, C., G. Vassão, D., et al. (2014). The role of glucosinolates and the jasmonic acid pathway in resistance of Arabidopsis thaliana against molluskan herbivores. Molecular Ecology, 23(5), 1188-1203. doi:10.1111/mec.12610.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-731A-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0009-32E4-D
Genre: Journal Article

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 Creators:
Falk, Kimberly1, Author              
Kästner, Julia2, Author              
Bodenhausen, N., Author
Schramm, Katharina1, Author              
Paetz, Christian3, Author              
G. Vassão, Daniel1, Author              
Reichelt, Michael1, Author              
von Knorre, D., Author
Bergelson, J., Author
Erb, Matthias4, Author              
Gershenzon, Jonathan1, Author              
Meldau, Stefan2, Author              
Affiliations:
1Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society, ou_421893              
2Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society, ou_24029              
3Research Group Biosynthesis / NMR, MPI for Chemical Ecology, Max Planck Society, ou_421898              
4Research Group Dr. M. Erb, Shoot Root Communication, Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society, ou_896545              

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 Abstract: Although slugs and snails play important roles in terrestrial ecosystems and cause considerable damage on a variety of crop plants, knowledge about the mechanisms of plant immunity to molluscs is limited. We found slugs to be natural herbivores of Arabidopsis thaliana and therefore investigated possible resistance mechanisms of this species against several molluscan herbivores. Treating wounded leaves with the mucus residue ('slime trail') of the Spanish slug Arion lusitanicus increased wound-induced jasmonate levels, suggesting the presence of defence elicitors in the mucus. Plants deficient in jasmonate biosynthesis and signalling suffered more damage by molluscan herbivores in the laboratory and in the field, demonstrating that JA-mediated defences protect A. thaliana against slugs and snails. Furthermore, experiments using A. thaliana mutants with altered levels of specific glucosinolate classes revealed the importance of aliphatic glucosinolates in defending leaves and reproductive structures against molluscs. The presence in mollusc faeces of known and novel metabolites arising from glutathione conjugation with glucosinolate hydrolysis products suggests that molluscan herbivores actively detoxify glucosinolates. Higher levels of aliphatic glucosinolates were found in plants during the night compared to the day, which correlated well with the nocturnal activity rhythms of slugs and snails. Our data highlight the function of well-known antiherbivore defence pathways in resistance against slugs and snails and suggest an important role for the diurnal regulation of defence metabolites against nocturnal molluscan herbivores.

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 Dates: 2013-10-112013-122014-01
 Publication Status: Published in print
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 Identifiers: Other: GER357
DOI: 10.1111/mec.12610
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Title: Molecular Ecology
Source Genre: Journal
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Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: 23 (5) Sequence Number: - Start / End Page: 1188 - 1203 Identifier: ISSN: 0962-1083
CoNE: https://pure.mpg.de/cone/journals/resource/954925580119