Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi

Neotyphodium endophytes and arbuscular mycorrhizal (AM) fungi are common constituents of natural grasslands. The plant-endophyte symbiosis can introduce changes in soil conditions that affect the density and activity of different functional groups of soil organisms. In the present work we performed...

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Autores principales: Novas, M.V., Iannone, L.J., Godeas, A.M., Scervino, J.M.
Formato: JOUR
Materias:
Arbuscular mycorrhiza
Bromus setifolius
Endophytes
Interaction
Native grass
Neotyphodium
agronomy
bioassay
colonization
endophyte
functional group
fungus
grass
grassland
host-symbiont interaction
infectivity
mycorrhiza
native species
root
soil microorganism
sporulation
symbiont
Arbuscular
Bromus
Fungi
Gigaspora margarita
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03345114_v55_n1_p19_Novas
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_03345114_v55_n1_p19_Novas2023-10-03T15:25:21Z Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi Novas, M.V. Iannone, L.J. Godeas, A.M. Scervino, J.M. Arbuscular mycorrhiza Bromus setifolius Endophytes Interaction Native grass Neotyphodium agronomy bioassay colonization endophyte functional group fungus grass grassland host-symbiont interaction infectivity mycorrhiza native species root soil microorganism sporulation symbiont Arbuscular Bromus Bromus setifolius Fungi Gigaspora margarita Neotyphodium Neotyphodium endophytes and arbuscular mycorrhizal (AM) fungi are common constituents of natural grasslands. The plant-endophyte symbiosis can introduce changes in soil conditions that affect the density and activity of different functional groups of soil organisms. In the present work we performed in vitro assays to evaluate the effect of root and endophyte exudates on the pre-infective state of mycorrhizal fungi (Gigaspora margarita and G. rosea). Plant roots of Bromus setifolius from populations of Patagonia, and four strains of Neotyphodium were used to obtain the exudates. Root exudates of infected plants, at a high concentration, significantly increased AMF hyphal branches and length relative to exudates from naturally endophyte free plants. The effect of Neotyphodium endophyte exudates on AMF mycelial length varied depending on strain and the concentration used, suggesting a differential interaction between endophyte and AMF species. AMF hyphal branches were increased by Neotyphodium fungal exudates in both mycorrhizal species. A few previous studies have suggested that Neotyphodium endophytes can reduce mycorrhizal sporulation and colonization of host roots in commonly-cultivated agronomic hosts. In this study we report the opposite effect in B. setifolius. This study reports the direct and positive effect of root exudates from plants in symbiosis with Neotyphodium, on AMF pre-infective state. Further, identical effects were detected using exudates from Neotyphodium endophytes. © 2011 Springer Science+Business Media B.V. Fil:Novas, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iannone, L.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Godeas, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scervino, J.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03345114_v55_n1_p19_Novas
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 mycorrhiza
Bromus setifolius
Endophytes
Interaction
Native grass
Neotyphodium
agronomy
bioassay
colonization
endophyte
functional group
fungus
grass
grassland
host-symbiont interaction
infectivity
mycorrhiza
native species
root
soil microorganism
sporulation
symbiont
Arbuscular
Bromus
Bromus setifolius
Fungi
Gigaspora margarita
Neotyphodium
spellingShingle Arbuscular mycorrhiza
Bromus setifolius
Endophytes
Interaction
Native grass
Neotyphodium
agronomy
bioassay
colonization
endophyte
functional group
fungus
grass
grassland
host-symbiont interaction
infectivity
mycorrhiza
native species
root
soil microorganism
sporulation
symbiont
Arbuscular
Bromus
Bromus setifolius
Fungi
Gigaspora margarita
Neotyphodium
Novas, M.V.
Iannone, L.J.
Godeas, A.M.
Scervino, J.M.
Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
topic_facet Arbuscular mycorrhiza
Bromus setifolius
Endophytes
Interaction
Native grass
Neotyphodium
agronomy
bioassay
colonization
endophyte
functional group
fungus
grass
grassland
host-symbiont interaction
infectivity
mycorrhiza
native species
root
soil microorganism
sporulation
symbiont
Arbuscular
Bromus
Bromus setifolius
Fungi
Gigaspora margarita
Neotyphodium
description Neotyphodium endophytes and arbuscular mycorrhizal (AM) fungi are common constituents of natural grasslands. The plant-endophyte symbiosis can introduce changes in soil conditions that affect the density and activity of different functional groups of soil organisms. In the present work we performed in vitro assays to evaluate the effect of root and endophyte exudates on the pre-infective state of mycorrhizal fungi (Gigaspora margarita and G. rosea). Plant roots of Bromus setifolius from populations of Patagonia, and four strains of Neotyphodium were used to obtain the exudates. Root exudates of infected plants, at a high concentration, significantly increased AMF hyphal branches and length relative to exudates from naturally endophyte free plants. The effect of Neotyphodium endophyte exudates on AMF mycelial length varied depending on strain and the concentration used, suggesting a differential interaction between endophyte and AMF species. AMF hyphal branches were increased by Neotyphodium fungal exudates in both mycorrhizal species. A few previous studies have suggested that Neotyphodium endophytes can reduce mycorrhizal sporulation and colonization of host roots in commonly-cultivated agronomic hosts. In this study we report the opposite effect in B. setifolius. This study reports the direct and positive effect of root exudates from plants in symbiosis with Neotyphodium, on AMF pre-infective state. Further, identical effects were detected using exudates from Neotyphodium endophytes. © 2011 Springer Science+Business Media B.V.
format JOUR
author Novas, M.V.
Iannone, L.J.
Godeas, A.M.
Scervino, J.M.
author_facet Novas, M.V.
Iannone, L.J.
Godeas, A.M.
Scervino, J.M.
author_sort Novas, M.V.
title Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
title_short Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
title_full Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
title_fullStr Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
title_full_unstemmed Evidence for leaf endophyte regulation of root symbionts: Effect of Neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
title_sort evidence for leaf endophyte regulation of root symbionts: effect of neotyphodium endophytes on the pre-infective state of mycorrhizal fungi
url http://hdl.handle.net/20.500.12110/paper_03345114_v55_n1_p19_Novas
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AT godeasam evidenceforleafendophyteregulationofrootsymbiontseffectofneotyphodiumendophytesonthepreinfectivestateofmycorrhizalfungi
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