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Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes

Mechanisms used by plants to respond to water limitation have been extensively studied. However, even though the inoculation of beneficial microbes has been shown to improve plant performance under drought stress, the inherent role of soil microbes on plant response has been less considered. In the...

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Autores principales: Yang, Luhua, Schröder, Peter, Vestergaard, Gisle, Schloter, Michael, Radl, Viviane
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7565417/
https://www.ncbi.nlm.nih.gov/pubmed/32937884
http://dx.doi.org/10.3390/microorganisms8091414
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author Yang, Luhua
Schröder, Peter
Vestergaard, Gisle
Schloter, Michael
Radl, Viviane
author_facet Yang, Luhua
Schröder, Peter
Vestergaard, Gisle
Schloter, Michael
Radl, Viviane
author_sort Yang, Luhua
collection PubMed
description Mechanisms used by plants to respond to water limitation have been extensively studied. However, even though the inoculation of beneficial microbes has been shown to improve plant performance under drought stress, the inherent role of soil microbes on plant response has been less considered. In the present work, we assessed the importance of the soil microbiome for the growth of barley plants under drought stress. Plant growth was not significantly affected by the disturbance of the soil microbiome under regular watering. However, after drought stress, we observed a significant reduction in plant biomass, particularly of the root system. Plants grown in the soil with disturbed microbiome were significantly more affected by drought and did not recover two weeks after re-watering. These effects were accompanied by changes in the composition of endophytic fungal and bacterial communities. Under natural conditions, soil-derived plant endophytes were major colonizers of plant roots, such as Glycomyces and Fusarium, whereas, for plants grown in the soil with disturbed microbiome seed-born bacterial endophytes, e.g., Pantoea, Erwinia, and unclassified Pseudomonaceae and fungal genera normally associated with pathogenesis, such as Gibberella and Gaeumannomyces were observed. Therefore, the role of the composition of the indigenous soil microbiota should be considered in future approaches to develop management strategies to make plants more resistant towards abiotic stress, such as drought.
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spelling pubmed-75654172020-10-26 Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes Yang, Luhua Schröder, Peter Vestergaard, Gisle Schloter, Michael Radl, Viviane Microorganisms Article Mechanisms used by plants to respond to water limitation have been extensively studied. However, even though the inoculation of beneficial microbes has been shown to improve plant performance under drought stress, the inherent role of soil microbes on plant response has been less considered. In the present work, we assessed the importance of the soil microbiome for the growth of barley plants under drought stress. Plant growth was not significantly affected by the disturbance of the soil microbiome under regular watering. However, after drought stress, we observed a significant reduction in plant biomass, particularly of the root system. Plants grown in the soil with disturbed microbiome were significantly more affected by drought and did not recover two weeks after re-watering. These effects were accompanied by changes in the composition of endophytic fungal and bacterial communities. Under natural conditions, soil-derived plant endophytes were major colonizers of plant roots, such as Glycomyces and Fusarium, whereas, for plants grown in the soil with disturbed microbiome seed-born bacterial endophytes, e.g., Pantoea, Erwinia, and unclassified Pseudomonaceae and fungal genera normally associated with pathogenesis, such as Gibberella and Gaeumannomyces were observed. Therefore, the role of the composition of the indigenous soil microbiota should be considered in future approaches to develop management strategies to make plants more resistant towards abiotic stress, such as drought. MDPI 2020-09-14 /pmc/articles/PMC7565417/ /pubmed/32937884 http://dx.doi.org/10.3390/microorganisms8091414 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, Luhua
Schröder, Peter
Vestergaard, Gisle
Schloter, Michael
Radl, Viviane
Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes
title Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes
title_full Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes
title_fullStr Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes
title_full_unstemmed Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes
title_short Response of Barley Plants to Drought Might Be Associated with the Recruiting of Soil-Borne Endophytes
title_sort response of barley plants to drought might be associated with the recruiting of soil-borne endophytes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7565417/
https://www.ncbi.nlm.nih.gov/pubmed/32937884
http://dx.doi.org/10.3390/microorganisms8091414
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