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Authors Greipsson, S; Ahokas, H; Vahamiko, S
Author Full Name Greipsson, S; Ahokas, H; Vahamiko, S
Title A rapid adaptation to low salinity of inland-colonizing populations of the littoral grass Leymus arenarius
Source INTERNATIONAL JOURNAL OF PLANT SCIENCES
Language English
Document Type Article
Keywords Plus WILD EMMER; WHEAT; TOLERANCE; GERMINATION; DIVERSITY; PROTEINS; BARLEY; STRESS; ISRAEL
Abstract Ecological studies on salt tolerance in plants have focused mainly on population differentiation with limited information on the timescale and genetic basis of this adaptation. This study reports on rapid adaptation of the littoral grass Leymus arenarius (lymegrass) to low salinity that has been found since 1967 to colonize the roadsides studied in Finland. Roadsides offer an open microenvironment similar to that of the beach. Thirty-four roadside and littoral populations were differentiated by germinating seeds at 300 mM NaCl, ca. half-strength seawater. Seeds of inland and sub-maritime populations had significantly (P < .001) less salt tolerance than littoral populations. The shortest distances of the habitats from the seashores showed significant (P < .001) negative correlation with the germination ability at 300 mM NaCl. Electrophoretic patterns of endospermal glycosylated proteins of high-molar-mass leymins were significantly (P < .01) correlated to total germination at 300 mM NaCl. Inland populations usually had three bands of the high-molar-mass leymins, but six bands of leymins were found in seeds of the most salt tolerant population. The rapid adaptation of lymegrass seed germination to low salinity indicates that only a few genes are involved in its salt tolerance and that the activity of such genes provides a load where salt tolerance is unnecessary. Alternatively, salinity in the habitat may control the expression of some genes.
Author Address ARC, PLANT BREEDING SECT, FIN-31600 JOKIOINEN, FINLAND; UNIV HELSINKI, DIV GENET, FIN-00014 HELSINKI, FINLAND
Reprint Address Greipsson, S (reprint author), SOIL CONSERVAT SERV, GUNNARSHOLT, IS-850 HELLA, ICELAND.
Times Cited 13
Total Times Cited Count (WoS, BCI, and CSCD) 14
Publisher UNIV CHICAGO PRESS
Publisher City CHICAGO
Publisher Address 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
ISSN 1058-5893
29-Character Source Abbreviation INT J PLANT SCI
ISO Source Abbreviation Int. J. Plant Sci.
Publication Date JAN
Year Published 1997
Volume 158
Issue 1
Beginning Page 73
Ending Page 78
Digital Object Identifier (DOI) 10.1086/297415
Page Count 6
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number WN337
Unique Article Identifier WOS:A1997WN33700008
Plants associated with this reference

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