Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content

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 purpos...

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Autores principales: Scambato, Agustina Azul, Echeverría, Mariela, Menéndez, Ana Bernardina
Publicado: 2010
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16770420_v22_n4_p285_Scambato
http://hdl.handle.net/20.500.12110/paper_16770420_v22_n4_p285_Scambato
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spelling paper:paper_16770420_v22_n4_p285_Scambato2023-06-08T16:26:30Z Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content Scambato, Agustina Azul Echeverría, Mariela Menéndez, Ana Bernardina Photosynthesis Proline Salinity Stomatal conductance Transpiration ratio Arbuscular Fungi Glomus Glomus intraradices Prosopis Prosopis alba 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. Fil:Scambato, A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Echeverria, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Menéndez, A.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16770420_v22_n4_p285_Scambato http://hdl.handle.net/20.500.12110/paper_16770420_v22_n4_p285_Scambato
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Photosynthesis
Proline
Salinity
Stomatal conductance
Transpiration ratio
Arbuscular
Fungi
Glomus
Glomus intraradices
Prosopis
Prosopis alba
spellingShingle Photosynthesis
Proline
Salinity
Stomatal conductance
Transpiration ratio
Arbuscular
Fungi
Glomus
Glomus intraradices
Prosopis
Prosopis alba
Scambato, Agustina Azul
Echeverría, Mariela
Menéndez, Ana Bernardina
Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
topic_facet Photosynthesis
Proline
Salinity
Stomatal conductance
Transpiration ratio
Arbuscular
Fungi
Glomus
Glomus intraradices
Prosopis
Prosopis alba
description 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.
author Scambato, Agustina Azul
Echeverría, Mariela
Menéndez, Ana Bernardina
author_facet Scambato, Agustina Azul
Echeverría, Mariela
Menéndez, Ana Bernardina
author_sort Scambato, Agustina Azul
title Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
title_short Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
title_full Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
title_fullStr Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
title_full_unstemmed Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
title_sort glomus intraradices improved salt tolerance in prosopis alba seedlings by improving water use efficiency and shoot water content
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16770420_v22_n4_p285_Scambato
http://hdl.handle.net/20.500.12110/paper_16770420_v22_n4_p285_Scambato
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AT echeverriamariela glomusintraradicesimprovedsalttoleranceinprosopisalbaseedlingsbyimprovingwateruseefficiencyandshootwatercontent
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