dc.contributor.author
Reinecke, Andreas
dc.contributor.author
Flaig, Isabelle C.
dc.contributor.author
Lozano, Yudi M.
dc.contributor.author
Rillig, Matthias C.
dc.contributor.author
Hilker, Monika
dc.date.accessioned
2024-06-06T12:32:11Z
dc.date.available
2024-06-06T12:32:11Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/43784
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-43499
dc.description.abstract
Plants react to drought stress with numerous changes including altered emissions of volatile organic compounds (VOC) from leaves, which provide protection against oxidative tissue damage and mediate numerous biotic interactions. Despite the share of grasslands in the terrestrial biosphere, their importance as carbon sinks and their contribution to global biodiversity, little is known about the influence of drought on VOC profiles of grassland species. Using coupled gas chromatography-mass spectrometry, we analysed the odorants emitted by 22 European grassland species exposed to an eight-week-lasting drought treatment (DT; 30% water holding capacity, WHC). We focused on the odorants emitted during the light phase from whole plant shoots in their vegetative stage. Emission rates were standardised to the dry weight of each shoot. Well-watered (WW) plants (70% WHC) served as control. Drought-induced significant changes included an increase in total emission rates of plant VOC in six and a decrease in three species. Diverging effects on the number of emitted VOC (chemical richness) or on the Shannon diversity of the VOC profiles were detected in 13 species. Biosynthetic pathways-targeted analyses revealed 13 species showing drought-induced higher emission rates of VOC from one, two, three, or four major biosynthetic pathways (lipoxygenase, shikimate, mevalonate and methylerythritol phosphate pathway), while six species exhibited reduced emission rates from one or two of these pathways. Similarity trees of odorant profiles and their drought-induced changes based on a biosynthetically informed distance metric did not match species phylogeny. However, a phylogenetic signal was detected for the amount of terpenoids released by the studied species under WW and DT conditions. A comparative analysis of emission rates of single compounds released by WW and DT plants revealed significant VOC profile dissimilarities in four species only. The moderate drought-induced changes in the odorant emissions of grassland species are discussed with respect to their impact on trophic interactions across the food web.
en
dc.format.extent
14 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Grassland species
en
dc.subject
Chemical profile
en
dc.subject
Plant volatile organic compounds
en
dc.subject
Biosynthetically informed distance
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie
dc.title
Drought induces moderate, diverse changes in the odour of grassland species
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
114040
dcterms.bibliographicCitation.doi
10.1016/j.phytochem.2024.114040
dcterms.bibliographicCitation.journaltitle
Phytochemistry
dcterms.bibliographicCitation.volume
221
dcterms.bibliographicCitation.url
https://doi.org/10.1016/j.phytochem.2024.114040
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Biologie

refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1873-3700
refubium.resourceType.provider
WoS-Alert