- Treffer 1 von 1
Physiological responses of date palm (Phoenix dactylifera) seedlings to seawater and flooding
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-228226
- In their natural environment along coast lines, date palms are exposed to seawater inundation and, hence, combined stress by salinity and flooding. To elucidate the consequences of this combined stress on foliar gas exchange and metabolite abundances in leaves and roots, date palm seedlings were exposed to flooding with seawater and its major constituents under controlled conditions. Seawater flooding significantly reduced CO\(_{2}\) assimilation, transpiration and stomatal conductance, but did not affect isoprene emission. A similarIn their natural environment along coast lines, date palms are exposed to seawater inundation and, hence, combined stress by salinity and flooding. To elucidate the consequences of this combined stress on foliar gas exchange and metabolite abundances in leaves and roots, date palm seedlings were exposed to flooding with seawater and its major constituents under controlled conditions. Seawater flooding significantly reduced CO\(_{2}\) assimilation, transpiration and stomatal conductance, but did not affect isoprene emission. A similar effect was observed upon NaCl exposure. By contrast, flooding with distilled water or MgSO\(_{4}\) did not affect CO\(_{2}\)/H\(_{2}\)O gas exchange or stomatal conductance significantly, indicating that neither flooding itself, nor seawater sulfate, contributed greatly to stomatal closure. Seawater exposure increased Na and Cl contents in leaves and roots, but did not affect sulfate contents significantly. Metabolite analyses revealed reduced abundances of foliar compatible solutes, such as sugars and sugar alcohols, whereas nitrogen compounds accumulated in roots. Reduced transpiration upon seawater exposure may contribute to controlling the movement of toxic ions to leaves and, therefore, can be seen as a mechanism to cope with salinity. The present results indicate that date palm seedlings are tolerant towards seawater exposure to some extent, and highly tolerant to flooding.…
Autor(en): | Baoguo Du, Yuhua Ma, Ana Maria Yáñez‐Serrano, Leila Arab, Lukas Fasbender, Saleh Alfarraj, Gadah Albasher, Rainer Hedrich, Philip J. White, Christiane Werner, Heinz Rennenberg |
---|---|
URN: | urn:nbn:de:bvb:20-opus-228226 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Biologie / Theodor-Boveri-Institut für Biowissenschaften |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | New Phytologist |
Erscheinungsjahr: | 2021 |
Band / Jahrgang: | 229 |
Heft / Ausgabe: | 6 |
Erste Seite: | 3318 |
Letzte Seite: | 3329 |
Originalveröffentlichung / Quelle: | New Phytologist 2021, 229(6):3318–3329. DOI: 10.1111/nph.17123 |
DOI: | https://doi.org/10.1111/nph.17123 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
Freie Schlagwort(e): | compatible solutes and other metabolites; date palm; flooding; salinity; shoot–root interaction; stomatal conductance; sulfate |
Datum der Freischaltung: | 14.10.2021 |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |