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Authors Mateos-Naranjo, E; Redondo-Gomez, S
Author Full Name Mateos-Naranjo, Enrique; Redondo-Gomez, Susana
Title Interpopulation Differences in Salinity Tolerance of the Invasive Cordgrass Spartina densiflora: Implications for Invasion Process
Source ESTUARIES AND COASTS
Language English
Document Type Article
Author Keywords Germination; Growth; Populations; Salinity; Spartina densiflora; Tissue concentration
Keywords Plus PHOTOSYNTHETIC RESPONSES; PLANT ZONATION; SALT MARSHES; POPULATIONS; GERMINATION; GROWTH; PHYSIOLOGY; POACEAE; STRESS; COAST
Abstract The invasive cordgrass, Spartina densiflora, has demonstrated a high tolerance to salinity stress. However, no attempt has yet been made to assess the intra-specific variation in salinity tolerance among S. densiflora populations. The aim of this study was to analyze the effects of provenance and salinity (0, 80, 170, 510, and 1023 mM NaCl) on germination, seedling survival, growth, and physiological performance of S. densiflora adult plants from three populations of the Gulf of Cadiz (Odiel, Tinto, and Piedras, SW Spain). Our results indicate that a salinity increment decreased germination and seedling survival of all S. densiflora populations, but these impairments were also dependent on the original population of the seeds. Accordingly, the Odiel population showed greater germination (70 %) and seedling survival (86 %) percentages at 510 mM NaCl than Tinto and Piedras populations, with mean percentage values of 57 % germination and 55 % seedling survival. These differences were also clearly reflected in long-term measurements, such as those regarding total dry mass, relative growth rate, and tiller number, which were mainly determined by the extent of photosynthetic area rather than the variations in net photosynthetic rate. Also, the higher tolerance of the Odiel population could be partly explained by a reduced level of Na in its tissues. Consequently, all populations might have the ability to colonize brackish marshes and river banks, but their invasion would be severely limited under hypersaline conditions, except in the case of the Odiel population, which would have a greater capacity for invasion of sub-optimal habitats, such a salt pans.
Author Address [Mateos-Naranjo, Enrique; Redondo-Gomez, Susana] Univ Seville, Fac Biol, Dept Biol Vegetal & Ecol, E-41080 Seville, Spain
Reprint Address Mateos-Naranjo, E (corresponding author), Univ Seville, Fac Biol, Dept Biol Vegetal & Ecol, E-41080 Seville, Spain.
E-mail Address emana@us.es
ResearcherID Number Mateos-Naranjo, Enrique/F-1782-2016; Redondo-Gomez, Susana/E-6783-2010
ORCID Number Mateos-Naranjo, Enrique/0000-0001-6276-5664; Redondo-Gomez, Susana/0000-0002-5280-9325
Funding Agency and Grant Number Spanish Science and Technology MinistrySpanish Government; Junta de AndaluciaJunta de Andalucia [CTM2008-04453, RNM07274]
Funding Text We are grateful to Dr. Raquel F. Lo Faso and Antonio Ruiz Rico for revising the English version of this manuscript. We also thank the Spanish Science and Technology Ministry and Junta de Andalucia for their support (projects CTM2008-04453 and RNM07274) and Seville University Glasshouse General Services for their collaboration. We also thank the useful comments of two anonymous reviewers who greatly helped to improve the final version of the manuscript.
Times Cited 8
Total Times Cited Count (WoS, BCI, and CSCD) 8
Publisher SPRINGER
Publisher City NEW YORK
Publisher Address 233 SPRING ST, NEW YORK, NY 10013 USA
ISSN 1559-2723
29-Character Source Abbreviation ESTUAR COAST
ISO Source Abbreviation Estuaries Coasts
Publication Date JAN
Year Published 2016
Volume 39
Issue 1
Beginning Page 98
Ending Page 107
Digital Object Identifier (DOI) 10.1007/s12237-015-9956-0
Page Count 10
Web of Science Category Environmental Sciences; Marine & Freshwater Biology
Subject Category Environmental Sciences & Ecology; Marine & Freshwater Biology
Document Delivery Number DA0ZK
Unique Article Identifier WOS:000367525900008
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