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Abstract:

The present work was aimed at testing the hypothesis that mycorrhizal Prosopis alba, an economically important tree species worldwide, presents increased salt-tolerance compared with non-mycorrhizal ones and at gaining insight into the possible mechanisms underlying that improvement. For this purpose, a randomized complete block experiment with two factors: mycorrhizal treatments with or without the arbuscular fungus Glomus intraradices and two salinity levels, 0 and 200 mM NaCl was performed. Plant growth in P. alba plants colonized by G. intraradices was less affected by salinity than that in non-arbuscular mycorrhizal (AM) plants, indicating that mycorrhizal colonization turned P. alba more tolerant to salinity. Photosynthesis was reduced by salinity in non-AM plants but not in AM ones. Salinity caused a significant decrease in mean stomatal conductance and transpiration rate, in mycorrhizal plants, but not in uninoculated ones. In this work, we detected two main mechanisms intervening in the salt tolerance enhancement of P. alba by the inoculation with G. intraradices: a- maintaining the net photosynthesis level and b- control of the transpiration rate. Taken together, the results suggest that inoculation with G. intraradices improves P. alba survival rates during the implantation period and seems to be a promising strategy to improve P. alba cultivation in saline lands.

Registro:

Documento: Artículo
Título:Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
Autor:Scambato, A.A.; Echeverria, M.; Sansberro, P.; Ruiz, O.A.; Menéndez, A.B.
Filiación:Instituto Tecnológico de Chascomús (IIB-INTECH) CONICET, Chascomús, Pcia de Buenos Aires, Argentina
Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Instituto de Botánica del Nordeste (IBONE-CONICET), Facultad de Ciencias Agrarias (UNNE), Sargento Cabral 2131, CC: 209, W3402BKG, Corrientes, Argentina
Palabras clave:Photosynthesis; Proline; Salinity; Stomatal conductance; Transpiration ratio; Arbuscular; Fungi; Glomus; Glomus intraradices; Prosopis; Prosopis alba
Año:2010
Volumen:22
Número:4
Página de inicio:285
Página de fin:289
DOI: http://dx.doi.org/10.1590/S1677-04202010000400008
Título revista:Brazilian Journal of Plant Physiology
Título revista abreviado:Braz. J. Plant Physiol.
ISSN:16770420
CODEN:BJPPB
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_16770420_v22_n4_p285_Scambato.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16770420_v22_n4_p285_Scambato

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Citas:

---------- APA ----------
Scambato, A.A., Echeverria, M., Sansberro, P., Ruiz, O.A. & Menéndez, A.B. (2010) . Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content. Brazilian Journal of Plant Physiology, 22(4), 285-289.
http://dx.doi.org/10.1590/S1677-04202010000400008
---------- CHICAGO ----------
Scambato, A.A., Echeverria, M., Sansberro, P., Ruiz, O.A., Menéndez, A.B. "Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content" . Brazilian Journal of Plant Physiology 22, no. 4 (2010) : 285-289.
http://dx.doi.org/10.1590/S1677-04202010000400008
---------- MLA ----------
Scambato, A.A., Echeverria, M., Sansberro, P., Ruiz, O.A., Menéndez, A.B. "Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content" . Brazilian Journal of Plant Physiology, vol. 22, no. 4, 2010, pp. 285-289.
http://dx.doi.org/10.1590/S1677-04202010000400008
---------- VANCOUVER ----------
Scambato, A.A., Echeverria, M., Sansberro, P., Ruiz, O.A., Menéndez, A.B. Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content. Braz. J. Plant Physiol. 2010;22(4):285-289.
http://dx.doi.org/10.1590/S1677-04202010000400008