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Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis

Forty nine endophytic bacterial isolates were obtained from knots on olive sterns induced by Pseudomonas savastanoi pv. savastanoi (Pss) and from symptomless leaves of olive trees naturally infected with Pss from six orchards from different locations in Tunisia. Populations of all endophytic bacteri...

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Main Authors: Krid, S., Rhouma, A., Mogou, I., Quesada, Jose M., Nesme, X., Gargouri, A.
Format: article
Language:Inglés
Published: 2017
Online Access:http://hdl.handle.net/20.500.11939/5459
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author Krid, S.
Rhouma, A.
Mogou, I.
Quesada, Jose M.
Nesme, X.
Gargouri, A.
author_browse Gargouri, A.
Krid, S.
Mogou, I.
Nesme, X.
Quesada, Jose M.
Rhouma, A.
author_facet Krid, S.
Rhouma, A.
Mogou, I.
Quesada, Jose M.
Nesme, X.
Gargouri, A.
author_sort Krid, S.
collection ReDivia
description Forty nine endophytic bacterial isolates were obtained from knots on olive sterns induced by Pseudomonas savastanoi pv. savastanoi (Pss) and from symptomless leaves of olive trees naturally infected with Pss from six orchards from different locations in Tunisia. Populations of all endophytic bacteria were higher in knots (1-14 10(6) CFU/g) than in leaves (5-21 10(4) CFU/g). A 16S rDNA sequence analysis revealed the presence of many saprophytic bacteria associated with Pss, such as Pantoea agglomerans, Enterobacter sp., Pseudomonas sp., P fluorescens, Stenotropbomonas maltophilia and Burkolderia cepacia. In the leaves, however Pss was often associated with Bacillus subtilis and an Acinetobacter species. Screening of antagonistic activity of 18 isolates associated with Pss in knots or leaves showed that only one strain of P fluorescens and one strain of B. subtilis were highly antagonistic against Pss. The active compound produced by B. subtilis is a protein whereas that produced by P. fluorescens is not.
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institution Instituto Valenciano de Investigaciones Agrarias (IVIA)
language Inglés
publishDate 2017
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spelling ReDivia54592025-04-25T14:42:24Z Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis Krid, S. Rhouma, A. Mogou, I. Quesada, Jose M. Nesme, X. Gargouri, A. Forty nine endophytic bacterial isolates were obtained from knots on olive sterns induced by Pseudomonas savastanoi pv. savastanoi (Pss) and from symptomless leaves of olive trees naturally infected with Pss from six orchards from different locations in Tunisia. Populations of all endophytic bacteria were higher in knots (1-14 10(6) CFU/g) than in leaves (5-21 10(4) CFU/g). A 16S rDNA sequence analysis revealed the presence of many saprophytic bacteria associated with Pss, such as Pantoea agglomerans, Enterobacter sp., Pseudomonas sp., P fluorescens, Stenotropbomonas maltophilia and Burkolderia cepacia. In the leaves, however Pss was often associated with Bacillus subtilis and an Acinetobacter species. Screening of antagonistic activity of 18 isolates associated with Pss in knots or leaves showed that only one strain of P fluorescens and one strain of B. subtilis were highly antagonistic against Pss. The active compound produced by B. subtilis is a protein whereas that produced by P. fluorescens is not. 2017-06-01T10:12:23Z 2017-06-01T10:12:23Z 2010 JUL 2010 article Krid, S., Rhouma, A., Mogou, I., Quesada, J.M., Nesme, X., Gargouri, A. (2010). Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis. Journal of Plant Pathology, 92(2), 335-341. 1125-4653 http://hdl.handle.net/20.500.11939/5459 10.4454/jpp.v92i2.174 en openAccess Impreso
spellingShingle Krid, S.
Rhouma, A.
Mogou, I.
Quesada, Jose M.
Nesme, X.
Gargouri, A.
Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis
title Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis
title_full Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis
title_fullStr Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis
title_full_unstemmed Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis
title_short Pseudomonas Savastanoi Endophytic Bacteria in Olive Tree Knots and Antagonistic Potential of Strains of Pseudomonas Fluorescens and Bacillus Subtilis
title_sort pseudomonas savastanoi endophytic bacteria in olive tree knots and antagonistic potential of strains of pseudomonas fluorescens and bacillus subtilis
url http://hdl.handle.net/20.500.11939/5459
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AT rhoumaa pseudomonassavastanoiendophyticbacteriainolivetreeknotsandantagonisticpotentialofstrainsofpseudomonasfluorescensandbacillussubtilis
AT mogoui pseudomonassavastanoiendophyticbacteriainolivetreeknotsandantagonisticpotentialofstrainsofpseudomonasfluorescensandbacillussubtilis
AT quesadajosem pseudomonassavastanoiendophyticbacteriainolivetreeknotsandantagonisticpotentialofstrainsofpseudomonasfluorescensandbacillussubtilis
AT nesmex pseudomonassavastanoiendophyticbacteriainolivetreeknotsandantagonisticpotentialofstrainsofpseudomonasfluorescensandbacillussubtilis
AT gargouria pseudomonassavastanoiendophyticbacteriainolivetreeknotsandantagonisticpotentialofstrainsofpseudomonasfluorescensandbacillussubtilis

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