The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2

Abstract Atmospheric CO2 concentrations are predicted to double within the next century. Despite this trend, the extent and mechanisms through which elevated CO2 affects grass-endophyte symbionts remain uncertain. In the present study, the growth, chemical composition and pathogen resistance of endo...

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Autores principales:	Wei Chen, Hui Liu, Wurihan, Yubao Gao, Stuart D. Card, Anzhi Ren
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9aa4ccf4dfe7469d9ec80c0d44506cb6
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spelling	oai:doaj.org-article:9aa4ccf4dfe7469d9ec80c0d44506cb62021-12-02T16:07:59ZThe advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO210.1038/s41598-017-07183-y2045-2322https://doaj.org/article/9aa4ccf4dfe7469d9ec80c0d44506cb62017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07183-yhttps://doaj.org/toc/2045-2322Abstract Atmospheric CO2 concentrations are predicted to double within the next century. Despite this trend, the extent and mechanisms through which elevated CO2 affects grass-endophyte symbionts remain uncertain. In the present study, the growth, chemical composition and pathogen resistance of endophyte-infected (E+) and uninfected (E−) tall fescue were compared under elevated CO2 conditions. The results showed that the effect of endophyte infection on the growth of tall fescue was significantly affected by elevated CO2. Significant advantage of E+ over E− tall fescue in tiller number, maximum net photosynthetic rate and shoot biomass occurred only under ambient CO2. With CO2 concentration elevated, the beneficial effect of endophyte infection on the growth disappeared. Similarly, endophyte infection reduced lesion number and spore concentration of Curvularia lunata only under ambient CO2. These results suggest that the beneficial effect of endophyte infection on the growth and pathogen resistance of tall fescue could be counteracted by elevated CO2. An explanation for the counteraction may be found in a change in photosynthesis and nutritive quality of leaf tissue.Wei ChenHui LiuWurihanYubao GaoStuart D. CardAnzhi RenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wei Chen Hui Liu Wurihan Yubao Gao Stuart D. Card Anzhi Ren The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2
description	Abstract Atmospheric CO2 concentrations are predicted to double within the next century. Despite this trend, the extent and mechanisms through which elevated CO2 affects grass-endophyte symbionts remain uncertain. In the present study, the growth, chemical composition and pathogen resistance of endophyte-infected (E+) and uninfected (E−) tall fescue were compared under elevated CO2 conditions. The results showed that the effect of endophyte infection on the growth of tall fescue was significantly affected by elevated CO2. Significant advantage of E+ over E− tall fescue in tiller number, maximum net photosynthetic rate and shoot biomass occurred only under ambient CO2. With CO2 concentration elevated, the beneficial effect of endophyte infection on the growth disappeared. Similarly, endophyte infection reduced lesion number and spore concentration of Curvularia lunata only under ambient CO2. These results suggest that the beneficial effect of endophyte infection on the growth and pathogen resistance of tall fescue could be counteracted by elevated CO2. An explanation for the counteraction may be found in a change in photosynthesis and nutritive quality of leaf tissue.
format	article
author	Wei Chen Hui Liu Wurihan Yubao Gao Stuart D. Card Anzhi Ren
author_facet	Wei Chen Hui Liu Wurihan Yubao Gao Stuart D. Card Anzhi Ren
author_sort	Wei Chen
title	The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2
title_short	The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2
title_full	The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2
title_fullStr	The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2
title_full_unstemmed	The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2
title_sort	advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated co2
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9aa4ccf4dfe7469d9ec80c0d44506cb6
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The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO2

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