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Publication Type J
Authors Nieva, FJJ; Castellanos, EM; Figueroa, ME; Gil, F
Author Full Name Nieva, FJJ; Castellanos, EM; Figueroa, ME; Gil, F
Title Gas exchange and chlorophyll fluorescence of C-3 and C-4 saltmarsh species
Source PHOTOSYNTHETICA
Language English
Document Type Article
Author Keywords Arthrocnemum; C-3 and C-4 plants; halophytes; intercellular CO2 concentration; leaf gas exchange; net photosynthetic rate; Spartina; stomatal conductance; transpiration rate; water potential
Keywords Plus SPARTINA-MARITIMA; PHOTOSYNTHESIS; SALINITY; SALT; STRESS; TOLERANCE; WATER; PHOTOINHIBITION; PLANTS; GROWTH
Abstract Spartina maritima (Curtis) Fernald, Spartina densiflora Brong, Arthrocnemum perenne (Miller) Moss, and Arthrocnemum fruticosum (L.) Moq are very frequent halophytes on the coasts of SW Europe. The first two are perennial Gramineae with C-4 metabolism; the last two are perennial Chenopodiaceae with C-3 metabolism. Controlled garden experiments were carried out with the four species to compare their physiological response, i.e., water potential (Psi), net photosynthetic rate (P-N), transpiration rate (E), stomatal conductance (g(s)), intercellular CO2 concentration (C-i), and chlorophyll fluorescence of photosystem (PS) 2 under saline and non-saline conditions. S. maritima behaves as an osmoconformer species, the other three as osmoregulators. in the four species, P-N, E, and g(s) improved following freshwater irrigation. The variations in P-N might be related with biochemical changes (which appear not to affect PS2), but not with significant stomatal fluctuations, which are associated with a lower water use efficiency in the case of Arthrocnemum. The species were segregated into two groups (not depending on their C-3 or C-4 photosynthetic pathway), in relation with the topographic level of this species in natural conditions: the relative responses of P-N in S. maritima and A. perenne were lower than those of S. densiflora and A. fruticosum. The salt-tolerance index supports such segregation. S. densiflora demonstrated the best competitive possibilities against salt-tolerant glycophytes, with its more flexible response in saline or brackish environments, which explains its spreading along the rivets draining into the estuaries of the SW Iberian Peninsula.
Author Address Univ Sevilla, Dept Biol Vegetal & Ecol, Seville 41080, Spain; Univ Huelva, Fac Ciencias Expt, Dept Ciencias Agroforestales, Huelva 21071, Spain
Reprint Address Nieva, FJJ (corresponding author), Univ Sevilla, Dept Biol Vegetal & Ecol, Apartado 1095, Seville 41080, Spain.
ResearcherID Number Castellanos, Eloy/I-6599-2019; CASTELLANOS, ELOY M./S-1820-2016; Figueroa Clemente, Manuel Enrique/L-7577-2014
ORCID Number CASTELLANOS, ELOY M./0000-0001-6182-9689; Figueroa Clemente, Manuel Enrique/0000-0002-8806-4054
Times Cited 53
Total Times Cited Count (WoS, BCI, and CSCD) 59
Publisher INST EXPERIMENTAL BOTANY, ACAD SCI CZECH REPUBLIC
Publisher City PRAGUE 6
Publisher Address NA KARLOVCE 1A, PRAGUE 6 CS-160 00, CZECH REPUBLIC
ISSN 0300-3604
29-Character Source Abbreviation PHOTOSYNTHETICA
ISO Source Abbreviation Photosynthetica
Year Published 1999
Volume 36
Issue 3
Beginning Page 397
Ending Page 406
Digital Object Identifier (DOI) 10.1023/A:1007024019133
Page Count 10
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number 225TQ
Unique Article Identifier WOS:000081979400008
Plants associated with this reference

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