dc.contributor.author
Ratzmann, Gregor
dc.contributor.author
Zakharova, Liubov
dc.contributor.author
Tietjen, Britta
dc.date.accessioned
2019-03-07T09:02:47Z
dc.date.available
2019-03-07T09:02:47Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/24085
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-1859
dc.description.abstract
Leaf water potential regulation is a key process in whole plant and ecosystem functioning. While low water potentials induced by open stomata may initially be associated with greater CO2 supply and a higher water flux from the rhizosphere to the canopy, they also inhibit cell growth, photosynthesis and ultimately water supply. Here, we show that plants regulate their leaf water potential in an optimal manner under given constraints using a simple leaf water status regulation model and data from a global dryland leaf water potential database. Model predictions agree strongly with observations across locations and species and are further supported by experimental data. Leaf water potentials non-linearly decline with soil water potential, underlining the shift from maximizing water supply to avoiding stress with declining water availability. Our results suggest that optimal regulation of the leaf water status under varying water supply and stress tolerance is a ubiquitous property of plants in drylands. The proposed model moreover provides a novel quantitative framework describing how plants respond to short- and long-term changes in water availability and may help elaborating models of plant and ecosystem functioning.
en
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Plant Sciences
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::580 Pflanzen (Botanik)::580 Pflanzen (Botanik)
dc.title
Optimal leaf water status regulation of plants in drylands
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
3768
dcterms.bibliographicCitation.doi
10.1038/s41598-019-40448-2
dcterms.bibliographicCitation.journaltitle
Scientific Reports
dcterms.bibliographicCitation.volume
9
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41598-019-40448-2
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.funding
Deutsche Forschungsgemeinschaft (DFG)
refubium.note.author
Die Publikation wurde aus Open Access Publikationsgeldern der Freien Universität Berlin und der DFG gefördert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2045-2322