The role of plant labile carbohydrates and nitrogen on wheat-aphid relations

Abstract Interactions between plants and herbivores are key drivers of evolution and ecosystem complexity. We investigated the role of plant labile carbohydrates and nitrogen on wheat-aphid relations in a 22 factorial combining [CO2] and nitrogen supply. We measured life history traits (assay 1) and...

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Autores principales:	Victor Sadras, Carolina Vázquez, Elisa Garzo, Aránzazu Moreno, Sonia Medina, Julian Taylor, Alberto Fereres
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c7b0dd040d6e483cac4184f4798346b8
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spelling	oai:doaj.org-article:c7b0dd040d6e483cac4184f4798346b82021-12-02T17:41:10ZThe role of plant labile carbohydrates and nitrogen on wheat-aphid relations 10.1038/s41598-021-91424-82045-2322https://doaj.org/article/c7b0dd040d6e483cac4184f4798346b82021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91424-8https://doaj.org/toc/2045-2322Abstract Interactions between plants and herbivores are key drivers of evolution and ecosystem complexity. We investigated the role of plant labile carbohydrates and nitrogen on wheat-aphid relations in a 22 factorial combining [CO2] and nitrogen supply. We measured life history traits (assay 1) and feeding behaviour (assay 2) of bird-cherry oat aphid (Rhopalosiphum padi L.) and English grain aphid (Sitobion avenae F.) forced to feed on single leaf laminae, and reproduction of R. padi in a setting where insects moved freely along the plant (assay 3). Experimental setting impacted aphid traits. Where aphids were constrained to single leaf, high nitrogen reduced their fitness and discouraged phloem feeding. Where aphids could move throughout the plant, high nitrogen enhanced their reproduction. Aphid responses to the interaction between nitrogen and [CO2] varied with experimental setting. The number of R. padi adults varied tenfold with plant growing conditions and correlated negatively with molar concentration of sugars in stem (assay 3). This finding has two implications. First, the common interpretation that high nitrogen favours insect fitness because protein-rich animal bodies have to build from nitrogen-poor plant food needs expanding to account for the conspicuous association between low nitrogen and high concentration of labile carbohydrates in plant, which can cause osmotic stress in aphids. Second, the function of labile carbohydrates buffering grain growth needs expanding to account for the osmotic role of carbohydrates in plant resistance to aphids.Victor SadrasCarolina VázquezElisa GarzoAránzazu MorenoSonia MedinaJulian TaylorAlberto FereresNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Victor Sadras Carolina Vázquez Elisa Garzo Aránzazu Moreno Sonia Medina Julian Taylor Alberto Fereres The role of plant labile carbohydrates and nitrogen on wheat-aphid relations
description	Abstract Interactions between plants and herbivores are key drivers of evolution and ecosystem complexity. We investigated the role of plant labile carbohydrates and nitrogen on wheat-aphid relations in a 22 factorial combining [CO2] and nitrogen supply. We measured life history traits (assay 1) and feeding behaviour (assay 2) of bird-cherry oat aphid (Rhopalosiphum padi L.) and English grain aphid (Sitobion avenae F.) forced to feed on single leaf laminae, and reproduction of R. padi in a setting where insects moved freely along the plant (assay 3). Experimental setting impacted aphid traits. Where aphids were constrained to single leaf, high nitrogen reduced their fitness and discouraged phloem feeding. Where aphids could move throughout the plant, high nitrogen enhanced their reproduction. Aphid responses to the interaction between nitrogen and [CO2] varied with experimental setting. The number of R. padi adults varied tenfold with plant growing conditions and correlated negatively with molar concentration of sugars in stem (assay 3). This finding has two implications. First, the common interpretation that high nitrogen favours insect fitness because protein-rich animal bodies have to build from nitrogen-poor plant food needs expanding to account for the conspicuous association between low nitrogen and high concentration of labile carbohydrates in plant, which can cause osmotic stress in aphids. Second, the function of labile carbohydrates buffering grain growth needs expanding to account for the osmotic role of carbohydrates in plant resistance to aphids.
format	article
author	Victor Sadras Carolina Vázquez Elisa Garzo Aránzazu Moreno Sonia Medina Julian Taylor Alberto Fereres
author_facet	Victor Sadras Carolina Vázquez Elisa Garzo Aránzazu Moreno Sonia Medina Julian Taylor Alberto Fereres
author_sort	Victor Sadras
title	The role of plant labile carbohydrates and nitrogen on wheat-aphid relations
title_short	The role of plant labile carbohydrates and nitrogen on wheat-aphid relations
title_full	The role of plant labile carbohydrates and nitrogen on wheat-aphid relations
title_fullStr	The role of plant labile carbohydrates and nitrogen on wheat-aphid relations
title_full_unstemmed	The role of plant labile carbohydrates and nitrogen on wheat-aphid relations
title_sort	role of plant labile carbohydrates and nitrogen on wheat-aphid relations
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c7b0dd040d6e483cac4184f4798346b8
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The role of plant labile carbohydrates and nitrogen on wheat-aphid relations

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