Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity

This study aimed to isolate and characterize bacteria associated with surface-sterilized germinated propagules of arbuscular mycorrhizal (AM) fungi. It also aimed to evaluate their activity as mycorrhization helper bacteria (MHB) on the AM fungus Rhizophagus intraradices, which is commonly used in t...

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Detalles Bibliográficos
Autores principales: Fernández, Laura, Bompadre, María Josefina, Silvani, Vanesa Analía, Pérgola, Mariana, Godeas, Alicia Margarita
Publicado: 2016
Materias:
Arbuscular mycorrhizal fungi
Associated helper rhizobacteria
Complex microbial inoculants
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09291393_v105_n_p86_FernandezBidondo
http://hdl.handle.net/20.500.12110/paper_09291393_v105_n_p86_FernandezBidondo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09291393_v105_n_p86_FernandezBidondo
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spelling paper:paper_09291393_v105_n_p86_FernandezBidondo2023-06-08T15:52:21Z Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity Fernández, Laura Bompadre, María Josefina Silvani, Vanesa Analía Pérgola, Mariana Godeas, Alicia Margarita Arbuscular mycorrhizal fungi Associated helper rhizobacteria Complex microbial inoculants This study aimed to isolate and characterize bacteria associated with surface-sterilized germinated propagules of arbuscular mycorrhizal (AM) fungi. It also aimed to evaluate their activity as mycorrhization helper bacteria (MHB) on the AM fungus Rhizophagus intraradices, which is commonly used in the formulation of bioinoculants. Most isolated bacteria did not significantly affect the viability and subsequent growth of mycelia. Azospirillum sp., Rhizobium etli, Bacillus megaterium, Bacillus sp., and Paenibacillus rhizosphaerae significantly enhanced pre-symbiotic variables (the re-growth/germination and the mycelia formed from AM propagules). P. rhizosphaerae, Azospirillum sp., and R. etli also increased extraradical mycelial length, mycorrhization percentages and the number of newly formed spores. The isolated MHB were characterized based on their starch-degrading ability, indole acetic acid production, phosphate solubilization, and inhibition of phytopathogenic fungal growth. Results suggest that some of the MHB studied, in association with viable AM propagules, could be potentially used as complex microbial inoculants for plant growth promotion. © 2016 Elsevier B.V. Fil:Fernández Bidondo, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bompadre, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Silvani, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pérgola, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Godeas, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09291393_v105_n_p86_FernandezBidondo http://hdl.handle.net/20.500.12110/paper_09291393_v105_n_p86_FernandezBidondo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Arbuscular mycorrhizal fungi
Associated helper rhizobacteria
Complex microbial inoculants
spellingShingle Arbuscular mycorrhizal fungi
Associated helper rhizobacteria
Complex microbial inoculants
Fernández, Laura
Bompadre, María Josefina
Silvani, Vanesa Analía
Pérgola, Mariana
Godeas, Alicia Margarita
Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity
topic_facet Arbuscular mycorrhizal fungi
Associated helper rhizobacteria
Complex microbial inoculants
description This study aimed to isolate and characterize bacteria associated with surface-sterilized germinated propagules of arbuscular mycorrhizal (AM) fungi. It also aimed to evaluate their activity as mycorrhization helper bacteria (MHB) on the AM fungus Rhizophagus intraradices, which is commonly used in the formulation of bioinoculants. Most isolated bacteria did not significantly affect the viability and subsequent growth of mycelia. Azospirillum sp., Rhizobium etli, Bacillus megaterium, Bacillus sp., and Paenibacillus rhizosphaerae significantly enhanced pre-symbiotic variables (the re-growth/germination and the mycelia formed from AM propagules). P. rhizosphaerae, Azospirillum sp., and R. etli also increased extraradical mycelial length, mycorrhization percentages and the number of newly formed spores. The isolated MHB were characterized based on their starch-degrading ability, indole acetic acid production, phosphate solubilization, and inhibition of phytopathogenic fungal growth. Results suggest that some of the MHB studied, in association with viable AM propagules, could be potentially used as complex microbial inoculants for plant growth promotion. © 2016 Elsevier B.V.
author Fernández, Laura
Bompadre, María Josefina
Silvani, Vanesa Analía
Pérgola, Mariana
Godeas, Alicia Margarita
author_facet Fernández, Laura
Bompadre, María Josefina
Silvani, Vanesa Analía
Pérgola, Mariana
Godeas, Alicia Margarita
author_sort Fernández, Laura
title Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity
title_short Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity
title_full Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity
title_fullStr Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity
title_full_unstemmed Cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. Implications for mycorrhizal activity
title_sort cultivable bacteria associated with infective propagules of arbuscular mycorrhizal fungi. implications for mycorrhizal activity
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09291393_v105_n_p86_FernandezBidondo
http://hdl.handle.net/20.500.12110/paper_09291393_v105_n_p86_FernandezBidondo
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