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Authors Hafsi, C; Falleh, H; Saada, M; Ksouri, R; Abdelly, C
Author Full Name Hafsi, Chokri; Falleh, Hanen; Saada, Mariem; Ksouri, Riadh; Abdelly, Chedly
Title Potassium deficiency alters growth, photosynthetic performance, secondary metabolites content, and related antioxidant capacity in Sulla carnosa grown under moderate salinity
Source PLANT PHYSIOLOGY AND BIOCHEMISTRY
Language English
Document Type Article
Author Keywords Antioxidants; Photosynthesis; Potassium deficiency; Salinity; Sulla carnosa
Keywords Plus SALT TOLERANCE; CHLOROPHYLL FLUORESCENCE; LEAF MESOPHYLL; GAS-EXCHANGE; PHENOLIC-COMPOUNDS; RETAIN POTASSIUM; CAKILE-MARITIMA; STRESS; BARLEY; PLANT
Abstract Salinity and K+ deficiency are two,environmental constraints that generally occur simultaneously under field conditions, resulting in severe limitation of plant growth and productivity. The present study aimed at investigating the effects of salinity, either separately applied or in combination with K+ deficiency, on growth, photosynthetic performance, secondary metabolites content, and related antioxidant capacity in Sulla carnosa. Seedlings were grown hydroponically under sufficient (6000 mu M) or low (60 mu M) ICE' supply with 100 mM NaCl (C + S and D + S treatments, respectively). Either alone or combined with K+ deficiency, salinity significantly restricted the plant growth. K+ deficiency further increased salt impact on the photosynthetic activity of S. carnosa, but this species displayed mechanisms that play a role in protecting photosynthetic machinery (including non photochemical quenching and antioxidant activity). In contrast to plants subjected to salt stress alone, higher accumulation of phenolic compounds was likely related to antioxidative defence mechanism in plants grown under combined effects of two stresses. As a whole, these data suggest that K+ deficiency increases the deleterious effects of salt stress. The quantitative and qualitative alteration of phenolic composition and the enhancement of related antioxidant capacity may be of crucial significance for S. carnosa plants growing under salinity and ICE deficient conditions. (C) 2017 Elsevier Masson SAS. All rights reserved.
Author Address [Hafsi, Chokri; Abdelly, Chedly] Ctr Biotechnol Borj Cedria, Lab Plantes Extremophiles, BP 901, Hammam Lif 2050, Tunisia; [Falleh, Hanen; Saada, Mariem; Ksouri, Riadh] Ctr Biotechnol Borj Cedria, Lab Plantes Aromat & Med, BP 901, Hammam Lif 2050, Tunisia
Reprint Address Hafsi, C (corresponding author), Ctr Biotechnol Borj Cedria, Lab Plantes Extremophiles, BP 901, Hammam Lif 2050, Tunisia.
E-mail Address hafsichokri@yahoo.fr
ORCID Number Ksouri, Riadh/0000-0001-6004-2585
Funding Agency and Grant Number Tunisian Ministry of Higher Education, and Scientific Research [LR15CBBC02]
Funding Text 3 This work was supported by Tunisian Ministry of Higher Education, and Scientific Research (LR15CBBC02). We wish to thank Mrs. Fethia ZRIBI and Khaoula MKADMINI for technical assistance. We thank also Dr. Ahmed DEBEZ for English revision of the manuscript.
Times Cited 18
Total Times Cited Count (WoS, BCI, and CSCD) 20
Publisher ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
Publisher City PARIS
Publisher Address 23 RUE LINOIS, 75724 PARIS, FRANCE
ISSN 0981-9428
29-Character Source Abbreviation PLANT PHYSIOL BIOCH
ISO Source Abbreviation Plant Physiol. Biochem.
Publication Date SEP
Year Published 2017
Volume 118
Beginning Page 609
Ending Page 617
Digital Object Identifier (DOI) 10.1016/j.plaphy.2017.08.002
Page Count 9
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number FH4YU
Unique Article Identifier WOS:000411169500062
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