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Publication Type J
Authors Manuchehri, R; Salehi, H
Author Full Name Manuchehri, Reza; Salehi, Hassan
Title Physiological and biochemical changes of common bermudagrass (Cynodon dactylon [L.] Pers.) under combined salinity and deficit irrigation stresses
Source SOUTH AFRICAN JOURNAL OF BOTANY
Language English
Document Type Article
Author Keywords Antioxidant; Common bermudagrass; Deficit irrigation; Turfgrass; Water salinity
Keywords Plus SALT STRESS; SUPEROXIDE-DISMUTASE; OXIDATIVE STRESS; WATER-STRESS; TOLERANCE MECHANISMS; LIPID-PEROXIDATION; HYDROGEN-PEROXIDE; ABIOTIC STRESS; DROUGHT STRESS; RESPONSES
Abstract Experiments were conducted to evaluate the effects of combined water salinity and deficit irrigation on common bermudagrass in order to address the shortage of water resources and increasing water and soil salinity in arid and semi-arid zones. This study was carried out under greenhouse conditions in a completely randomized design with factorial arrangements. Treatments included 4 water salinity levels (0.5, 3, 6 and 9 dS m(-1)) and 4 deficit irrigation regimes (2, 4, 6 and 8 day intervals). Results indicated a rise in ion leakage, soluble sugars and proline concentrations; and a drop in leaf relative water content (RWC), leaf chlorophyll content and photosynthetic rate with increasing levels of both stresses. Antioxidant enzymes, superoxide dismutase (SOD, EC 1.15.1.1), catalase (CAT, EC 1.11.1.6), peroxidase (POD, EC 1.11.1.7) and ascorbate peroxidase (APX, EC 1.11.1.11) showed higher activity under moderate drought or salinity conditions. However, these enzyme levels dropped at higher levels of these two stresses. Based on the results of the present study, common bermudagrass could be grown under moderate combined water and salinity stresses without considerable damage to plants at the physiological and/or biochemical level. This is the first report of applying combined water and salinity stresses to an important turfgrass species. Further studies are needed to evaluate the effects of these stresses on characteristics of bermudagrass at the molecular and ultrastructural levels. (c) 2014 SAAB. Published by Elsevier B.V. All rights reserved.
Author Address [Manuchehri, Reza; Salehi, Hassan] Shiraz Univ, Coll Agr, Dept Hort Sci, Shiraz, Iran
Reprint Address Salehi, H (reprint author), Shiraz Univ, Coll Agr, Dept Hort Sci, Shiraz, Iran.
E-mail Address hsalehi@shirazu.ac.ir
ORCID Number Salehi, Hassan/0000-0002-9759-3329
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Cited Reference Count 45
Times Cited 4
Total Times Cited Count (WoS, BCI, and CSCD) 4
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0254-6299
29-Character Source Abbreviation S AFR J BOT
ISO Source Abbreviation S. Afr. J. Bot.
Publication Date MAY
Year Published 2014
Volume 92
Beginning Page 83
Ending Page 88
Digital Object Identifier (DOI) 10.1016/j.sajb.2014.02.006
Page Count 6
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number AE6JL
Unique Article Identifier WOS:000334097400014
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