Shoot chloride translocation as a determinant for NaCl tolerance in Vicia faba L

Copyright © 2019 Elsevier GmbH. All rights reserved.

Détails bibliographiques
Publié dans:Journal of plant physiology. - 1979. - 236(2019) vom: 02. Mai, Seite 23-33
Auteur principal: Franzisky, Bastian L (Auteur)
Autres auteurs: Geilfus, Christoph-Martin, Kränzlein, Markus, Zhang, Xudong, Zörb, Christian
Format: Article en ligne
Langue:English
Publié: 2019
Accès à la collection:Journal of plant physiology
Sujets:Journal Article Chlorine Chlorine salinity Salt tolerance Sodium Vicia faba Chlorides 9NEZ333N27 Potassium RWP5GA015D
Description
Résumé:Copyright © 2019 Elsevier GmbH. All rights reserved.
Faba bean (Vicia faba L.) is sensitive to salinity. While toxic effects of sodium (Na+) are well studied, toxicity aspects of chloride (Cl-) and the underlying tolerance mechanisms to Cl- are not well understood. For this reason, shoot Cl- translocation and its effect as potential determinant for tolerance was tested. Diverse V. faba varieties were grown hydroponically and stressed with 100 mM NaCl until necrotic leaf spots appeared. At this point, biomass formation, oxidative damage of membranes as well as Na+, Cl- and potassium concentrations were measured. The V. faba varieties contrasted in the length of the period they could withstand the NaCl stress treatment. More tolerant varieties survived longer without evolving necrosis and were less affected by inhibitory effects on photosynthesis. The concentration of Cl- at the time point of developing leaf necrosis was in the same range irrespective of the variety, while that of Na+ varied. This indicates that Cl- concentrations, and not Na+ concentrations are critical for the formation of salt necrosis in faba bean. Tolerant varieties profited from lower Cl- translocation to leaves. Therefore, photosynthesis was less affected in those varieties with lower Cl-. This mechanism is a new trait of interest for salt tolerance in V. faba
Description:Date Completed 28.05.2019
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1618-1328
DOI:10.1016/j.jplph.2019.02.012