A biological agent modulates the physiology of barley infected with Drechslera teres

Abstract Recognized as the causal agent of net blotch, Drechslera teres is responsible for major losses of barley crop yield. The consequences of this leaf disease are due to the impact of the infection on the photosynthetic performance of barley leaves. To limit the symptoms of this ascomycete, the...

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Autores principales:	Aurélie Backes, Nathalie Vaillant-Gaveau, Qassim Esmaeel, Essaid Ait Barka, Cédric Jacquard
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/38978f0172944b21b61d984bc7f34a32
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spelling	oai:doaj.org-article:38978f0172944b21b61d984bc7f34a322021-12-02T14:27:56ZA biological agent modulates the physiology of barley infected with Drechslera teres10.1038/s41598-021-87853-02045-2322https://doaj.org/article/38978f0172944b21b61d984bc7f34a322021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87853-0https://doaj.org/toc/2045-2322Abstract Recognized as the causal agent of net blotch, Drechslera teres is responsible for major losses of barley crop yield. The consequences of this leaf disease are due to the impact of the infection on the photosynthetic performance of barley leaves. To limit the symptoms of this ascomycete, the use of beneficial bacteria known as “Plant Growth Promoting Rhizobacteria” constitutes an innovative and environmentally friendly strategy. A bacterium named as strain B25 belonging to the genus Burkholderia showed a strong antifungal activity against D. teres. The bacterium was able to limit the development of the fungus by 95% in detached leaves of bacterized plants compared to the non-bacterized control. In this study, in-depth analyses of the photosynthetic performance of young barley leaves infected with D. teres and/or in the presence of the strain B25 were carried out both in and close to the necrotic area. In addition, gas exchange measurements were performed only near the necrotic area. Our results showed that the presence of the beneficial bacterium reduced the negative impact of the fungus on the photosynthetic performance and modified only the net carbon assimilation rate close to the necrotic area. Indeed, the presence of the strain B25 decreased the quantum yield of regulated non-photochemical energy loss in PSII noted as Y(NPQ) and allowed to maintain the values stable of maximum quantum yield of PSII photochemistry known as Fv/Fm and close to those of the control in the presence of D. teres. To the best of our knowledge, these data constitute the first study focusing on the impact of net blotch fungus and a beneficial bacterium on photosynthesis and respiratory parameters in barley leaves.Aurélie BackesNathalie Vaillant-GaveauQassim EsmaeelEssaid Ait BarkaCédric JacquardNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Aurélie Backes Nathalie Vaillant-Gaveau Qassim Esmaeel Essaid Ait Barka Cédric Jacquard A biological agent modulates the physiology of barley infected with Drechslera teres
description	Abstract Recognized as the causal agent of net blotch, Drechslera teres is responsible for major losses of barley crop yield. The consequences of this leaf disease are due to the impact of the infection on the photosynthetic performance of barley leaves. To limit the symptoms of this ascomycete, the use of beneficial bacteria known as “Plant Growth Promoting Rhizobacteria” constitutes an innovative and environmentally friendly strategy. A bacterium named as strain B25 belonging to the genus Burkholderia showed a strong antifungal activity against D. teres. The bacterium was able to limit the development of the fungus by 95% in detached leaves of bacterized plants compared to the non-bacterized control. In this study, in-depth analyses of the photosynthetic performance of young barley leaves infected with D. teres and/or in the presence of the strain B25 were carried out both in and close to the necrotic area. In addition, gas exchange measurements were performed only near the necrotic area. Our results showed that the presence of the beneficial bacterium reduced the negative impact of the fungus on the photosynthetic performance and modified only the net carbon assimilation rate close to the necrotic area. Indeed, the presence of the strain B25 decreased the quantum yield of regulated non-photochemical energy loss in PSII noted as Y(NPQ) and allowed to maintain the values stable of maximum quantum yield of PSII photochemistry known as Fv/Fm and close to those of the control in the presence of D. teres. To the best of our knowledge, these data constitute the first study focusing on the impact of net blotch fungus and a beneficial bacterium on photosynthesis and respiratory parameters in barley leaves.
format	article
author	Aurélie Backes Nathalie Vaillant-Gaveau Qassim Esmaeel Essaid Ait Barka Cédric Jacquard
author_facet	Aurélie Backes Nathalie Vaillant-Gaveau Qassim Esmaeel Essaid Ait Barka Cédric Jacquard
author_sort	Aurélie Backes
title	A biological agent modulates the physiology of barley infected with Drechslera teres
title_short	A biological agent modulates the physiology of barley infected with Drechslera teres
title_full	A biological agent modulates the physiology of barley infected with Drechslera teres
title_fullStr	A biological agent modulates the physiology of barley infected with Drechslera teres
title_full_unstemmed	A biological agent modulates the physiology of barley infected with Drechslera teres
title_sort	biological agent modulates the physiology of barley infected with drechslera teres
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/38978f0172944b21b61d984bc7f34a32
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A biological agent modulates the physiology of barley infected with Drechslera teres

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