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Publication Type J
Authors Isla, R; Guillen, M; Aragues, R
Author Full Name Isla, R.; Guillen, M.; Araguees, R.
Title Response of five tree species to salinity and waterlogging: shoot and root biomass and relationships with leaf and root ion concentrations
Source AGROFORESTRY SYSTEMS
Language English
Document Type Article
Author Keywords Agroforestry; Aerial biomass; Root biomass; Acacia; Casuarina; Eucalyptus
Keywords Plus EUCALYPTUS-CAMALDULENSIS; POPLAR GENOTYPES; WATER RELATIONS; SALT TOLERANCE; SOIL-SALINITY; GROWTH; AUSTRALIA; NACL; ACCUMULATION; AGROFORESTRY
Abstract Unproductive saline and waterlogged (WT) wastelands could be beneficially transformed into agroforestry systems using trees tolerant to these stresses. We studied the salinity and waterlogging tolerance of five Australian tree species (Acacia salicina, Casuarina glauca, Casuarina obesa, Eucalyptus camaldulensis and Eucalyptus occidentalis) during seedling stage and their relationships with root and leaf ion concentrations. 8-month old plants were exposed for 5 months to five irrigation water salinity treatments (EC values between 2 and 22 dS m(-1)) and two waterlogging treatments (drained or WT). The salinity tolerance of the five species was high, although decreased in WT conditions. Irrespective of salinity, the two Casuarina species were more tolerant and the other three species were less tolerant to WT than drained conditions. In all species, salinity and waterlogging increased leaf Cl- and Na+ and decreased leaf Ca2+, but not leaf K+. Root Cl- and Na+ increased with salinity but not with waterlogging. Salinity tolerance was negatively correlated with Cl- and Na+ leaf accumulation rates per unit increase in salinity. Waterlogging reduced the ability of the seedlings to exclude Cl- and Na+ from the leaves. The two most salt tolerant Casuarina species under both drained and WT conditions showed the highest leaf Cl- and Na+ exclusion and the highest root Cl- and Na+ accumulation, suggesting that sequestration of these toxic ions in their roots was a significant salt-tolerant mechanism. Revegetation of saline and WT wastelands with these tolerant Casuarina species could be profitably used for biomass, biofuel and renewable energy production.
Author Address [Isla, R.; Guillen, M.; Araguees, R.] Aragon Govt, Soils & Irrigat Dept, EEAD CSIC Associated Unit, Agrifood Res & Technol Ctr Aragon CITA, Zaragoza 50059, Spain
Reprint Address Isla, R (reprint author), Aragon Govt, Soils & Irrigat Dept, EEAD CSIC Associated Unit, Agrifood Res & Technol Ctr Aragon CITA, Avda Montanana 930, Zaragoza 50059, Spain.
E-mail Address risla@aragon.es
Funding Agency and Grant Number European Community [INCO-CT-2007-032502]; International Centre for Advanced Mediterranean Studies (CIHEAM) in Zaragoza (Spain)
Funding Text The study was funded by the European Community (Contract No. INCO-CT-2007-032502, BIOSAFOR) and the International Centre for Advanced Mediterranean Studies (CIHEAM) in Zaragoza (Spain). Thanks are given to the field and laboratory personnel of the CITA Department of Soils and Irrigation. Special thanks to the two anonymous reviewers of the journal that improved significantly the quality of the manuscript.
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Cited Reference Count 36
Times Cited 3
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0167-4366
29-Character Source Abbreviation AGROFOREST SYST
ISO Source Abbreviation Agrofor. Syst.
Publication Date JUN
Year Published 2014
Volume 88
Issue 3
Beginning Page 461
Ending Page 477
Digital Object Identifier (DOI) 10.1007/s10457-014-9705-6
Page Count 17
Web of Science Category Agronomy; Forestry
Subject Category Agriculture; Forestry
Document Delivery Number AJ3XY
Unique Article Identifier WOS:000337602400007
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