Xylariales): Physiological characterization and structural features of its association with wheat.

: Plant roots can be colonized by asymptomatic fungal strains belonging to several taxa, among them, the group defined as Dark Septate Endophytes (DSE). Microdochium bolleyi commonly colonizes wheat roots and other crops. It is considered a weak pathogen or even a non-pathogenic fungal species, whic...

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Main Authors: Carolina Rothen, Victoria Miranda, Sebastián Fracchia, Alicia Godeas, Alejandra Rodríguez
Format: Article
Language:English
Published: Sociedad Argentina de Botánica 2018-07-01
Series:Boletín de la Sociedad Argentina de Botánica
Subjects:
Online Access:https://revistas.unc.edu.ar/index.php/BSAB/article/view/20574
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author Carolina Rothen
Victoria Miranda
Sebastián Fracchia
Alicia Godeas
Alejandra Rodríguez
author_facet Carolina Rothen
Victoria Miranda
Sebastián Fracchia
Alicia Godeas
Alejandra Rodríguez
author_sort Carolina Rothen
collection DOAJ
description : Plant roots can be colonized by asymptomatic fungal strains belonging to several taxa, among them, the group defined as Dark Septate Endophytes (DSE). Microdochium bolleyi commonly colonizes wheat roots and other crops. It is considered a weak pathogen or even a non-pathogenic fungal species, which has also been considered as a potential biocontrol agent against aggressive soil-borne pathogens in cereal crops. We isolated a strain of M. bolleyi from wheat roots sampled in a crop field in Argentina, and characterized its abilities to grow in different carbon and nitrogen sources, to produce indole and to solubilize phosphorus; also several enzymatic activities were evaluated. In addition, resynthesis was performed under controlled conditions in order to characterize root fungal colonization under both, optical and transmission microscopy. The strain 22-1 colonized wheat root parenchymal tissue, forming chlamysdospores inside parenchymal cells and root hairs, and poorly grew in carbon and nitrogen sources. This fungus also synthesized indoles in in vitro culture, but it cannot solubilize phosphorus. Only amylase activity was detected out of seven enzymatic activity measured. Microdochium bolleyi (strain 22-1) colonized the roots, it formed typical DSE fungal structures and behaved like a “true endophyte”; however further studies are necessary to elucidate its role in the association with wheat.
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spelling doaj.art-19aa6c3a108144eba3bc67515c830c302022-12-22T00:37:42ZengSociedad Argentina de BotánicaBoletín de la Sociedad Argentina de Botánica0373-580X1851-23722018-07-0153210.31055/1851.2372.v53.n2.20574Xylariales): Physiological characterization and structural features of its association with wheat.Carolina RothenVictoria MirandaSebastián FracchiaAlicia GodeasAlejandra Rodríguez: Plant roots can be colonized by asymptomatic fungal strains belonging to several taxa, among them, the group defined as Dark Septate Endophytes (DSE). Microdochium bolleyi commonly colonizes wheat roots and other crops. It is considered a weak pathogen or even a non-pathogenic fungal species, which has also been considered as a potential biocontrol agent against aggressive soil-borne pathogens in cereal crops. We isolated a strain of M. bolleyi from wheat roots sampled in a crop field in Argentina, and characterized its abilities to grow in different carbon and nitrogen sources, to produce indole and to solubilize phosphorus; also several enzymatic activities were evaluated. In addition, resynthesis was performed under controlled conditions in order to characterize root fungal colonization under both, optical and transmission microscopy. The strain 22-1 colonized wheat root parenchymal tissue, forming chlamysdospores inside parenchymal cells and root hairs, and poorly grew in carbon and nitrogen sources. This fungus also synthesized indoles in in vitro culture, but it cannot solubilize phosphorus. Only amylase activity was detected out of seven enzymatic activity measured. Microdochium bolleyi (strain 22-1) colonized the roots, it formed typical DSE fungal structures and behaved like a “true endophyte”; however further studies are necessary to elucidate its role in the association with wheat.https://revistas.unc.edu.ar/index.php/BSAB/article/view/20574Dark septate endophytesMicrodochium bolleyiroot endophyteswheat crop
spellingShingle Carolina Rothen
Victoria Miranda
Sebastián Fracchia
Alicia Godeas
Alejandra Rodríguez
Xylariales): Physiological characterization and structural features of its association with wheat.
Boletín de la Sociedad Argentina de Botánica
Dark septate endophytes
Microdochium bolleyi
root endophytes
wheat crop
title Xylariales): Physiological characterization and structural features of its association with wheat.
title_full Xylariales): Physiological characterization and structural features of its association with wheat.
title_fullStr Xylariales): Physiological characterization and structural features of its association with wheat.
title_full_unstemmed Xylariales): Physiological characterization and structural features of its association with wheat.
title_short Xylariales): Physiological characterization and structural features of its association with wheat.
title_sort xylariales physiological characterization and structural features of its association with wheat
topic Dark septate endophytes
Microdochium bolleyi
root endophytes
wheat crop
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/20574
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AT victoriamiranda xylarialesphysiologicalcharacterizationandstructuralfeaturesofitsassociationwithwheat
AT sebastianfracchia xylarialesphysiologicalcharacterizationandstructuralfeaturesofitsassociationwithwheat
AT aliciagodeas xylarialesphysiologicalcharacterizationandstructuralfeaturesofitsassociationwithwheat
AT alejandrarodriguez xylarialesphysiologicalcharacterizationandstructuralfeaturesofitsassociationwithwheat