Atmospheric and soil water deficit induced changes in chemical and hydraulic signals in wheat (Triticum aestivum L.)

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dc.contributor.authorTatar, Özgür
dc.contributor.authorBrück, Holger
dc.contributor.authorAsch, Folkard
dc.date.accessioned2024-09-03T08:32:11Z
dc.date.available2024-09-03T08:32:11Z
dc.date.issued2022de
dc.description.abstractPlant responses to soil drying and the metabolic basis of drought‐induced limitations in stomatal opening are still being discussed. In this study, we investigate the roles of root‐born chemical and hydraulic signals on stomatal regulation in wheat genotypes as affected by soil drought and vapour pressure deficit. Twelve consecutive pot experiments were carried out in a glasshouse. Two bread wheat cultivars (Gönen and Basribey) were subjected to drought under high and low vapour pressure deficit (VPD) in a growth chamber. Total dry matter, specific leaf area, xylem ABA content, xylem osmotic potential, xylem pH, root water potential (RWP), stomatal conductance, leaf ABA content and photosynthetic activity were determined daily during 6 days after the onset of treatments (DAT). In the first phase of drought stress, soil drying induced an increase in the xylem ABA with a peak 3 DAT while RWP drastically decreased during the same period. Then the osmotic potential of leaves decreased and leaf ABA content increased 4 DAT. A similar peak was observed for stomatal conductance during the early stress phase, and it became stable and significantly higher than in well‐watered conditions especially in high vapour deficit conditions (H‐VPD). Furthermore, xylem pH and xylem osmotic potential appeared to be mostly associated with atmospheric moisture content than soil water availability. The results are discussed regarding possible drought adaptation of wheat under different atmospheric humidity.en
dc.identifier.swb1812800312
dc.identifier.urihttps://hohpublica.uni-hohenheim.de/handle/123456789/16371
dc.identifier.urihttps://doi.org/10.1111/jac.12620
dc.language.isoengde
dc.rights.licensecc_by-nc-ndde
dc.source1439-037Xde
dc.sourceJournal of agronomy and crop science; Vol. 209, No. 2 (2022), 242-250de
dc.subjectABAen
dc.subjectDroughten
dc.subjectPHen
dc.subjectPhotosynthesisen
dc.subjectVapour deficiten
dc.subjectXylemen
dc.subject.ddc580
dc.titleAtmospheric and soil water deficit induced changes in chemical and hydraulic signals in wheat (Triticum aestivum L.)en
dc.type.diniArticle
dcterms.bibliographicCitationJournal of agronomy and crop science, 209 (2022), 2, 242-250. https://doi.org/10.1111/jac.12620. ISSN: 1439-037X
dcterms.bibliographicCitation.issue2
dcterms.bibliographicCitation.journaltitleJournal of agronomy and crop science
dcterms.bibliographicCitation.volume209
local.export.bibtex@article{Tatar2022, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16371}, doi = {10.1111/jac.12620}, author = {Tatar, Özgür and Brück, Holger and Asch, Folkard et al.}, title = {Atmospheric and soil water deficit induced changes in chemical and hydraulic signals in wheat (Triticum aestivum L.)}, journal = {Journal of agronomy and crop science}, year = {2022}, volume = {209}, number = {2}, }
local.export.bibtexAuthorTatar, Özgür and Brück, Holger and Asch, Folkard et al.
local.export.bibtexKeyTatar2022
local.export.bibtexType@article

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