INVESTIGADORES
ALBERTO Edgardo Omar
artículos
Título:
Alleviation of salt stress in Lotus glaber by Glomus intraradices
Autor/es:
SANNAZZARO, A. I; RUIZ O. A.; ALBERTÓ, E.; MENÉNDEZ A. B
Revista:
PLANT AND SOIL
Editorial:
Springer
Referencias:
Lugar: Netherlands; Año: 2006 vol. 285 p. 279 - 287
ISSN:
0032-079X
Resumen:
Abstract Lotus glaber is a glycophytic, perennial legume from Europe that occurs widely in saline habitats. We evaluated the effect of mycorrhizal fungus colonization on the response to salt stress of two genotypes of L. glaber differing in their tolerance to salinity. The experiment consisted of a randomized block design with two factors: (1) mycorrhizal fungus treatments (with or without AM fungus) and (2) two salinity levels of 0 and 200 mM NaCl. Our results indicated that Glomus intraradices established a more efficient symbiosis with the tolerant than with the sensitive genotype.Lotus glaber is a glycophytic, perennial legume from Europe that occurs widely in saline habitats. We evaluated the effect of mycorrhizal fungus colonization on the response to salt stress of two genotypes of L. glaber differing in their tolerance to salinity. The experiment consisted of a randomized block design with two factors: (1) mycorrhizal fungus treatments (with or without AM fungus) and (2) two salinity levels of 0 and 200 mM NaCl. Our results indicated that Glomus intraradices established a more efficient symbiosis with the tolerant than with the sensitive genotype.L. glaber differing in their tolerance to salinity. The experiment consisted of a randomized block design with two factors: (1) mycorrhizal fungus treatments (with or without AM fungus) and (2) two salinity levels of 0 and 200 mM NaCl. Our results indicated that Glomus intraradices established a more efficient symbiosis with the tolerant than with the sensitive genotype.Glomus intraradices established a more efficient symbiosis with the tolerant than with the sensitive genotype.established a more efficient symbiosis with the tolerant than with the sensitive genotype. G. intraradices improved growth of L. glaberimproved growth of L. glaber plants under saline conditions. They showed higher values of net growth, shoot/root and K+/ Na+ ratios, and protein concentrations than controls. Tolerant AM plants also showed higher chlorophyll levels than non-AM ones. Prevention of Na+ accumulation in the plant and enhancement ofK+ concentrations in roots observed in this work could be part of the general mechanism of salt stress alleviation of L. glaber by G. intraradices.+/ Na+ ratios, and protein concentrations than controls. Tolerant AM plants also showed higher chlorophyll levels than non-AM ones. Prevention of Na+ accumulation in the plant and enhancement ofK+ concentrations in roots observed in this work could be part of the general mechanism of salt stress alleviation of L. glaber by G. intraradices.+ ratios, and protein concentrations than controls. Tolerant AM plants also showed higher chlorophyll levels than non-AM ones. Prevention of Na+ accumulation in the plant and enhancement ofK+ concentrations in roots observed in this work could be part of the general mechanism of salt stress alleviation of L. glaber by G. intraradices.+ accumulation in the plant and enhancement ofK+ concentrations in roots observed in this work could be part of the general mechanism of salt stress alleviation of L. glaber by G. intraradices.+ concentrations in roots observed in this work could be part of the general mechanism of salt stress alleviation of L. glaber by G. intraradices.L. glaber by G. intraradices.