Strategies to aply water-deficit stress: similarities and disparities at the whole plant metabolism level in medicago truncatula

Castañeda Presa, Verónica; González García, Esther

Strategies to aply water-deficit stress: similarities and disparities at the whole plant metabolism level in medicago truncatula

dc.contributor.author	Castañeda Presa, Verónica
dc.contributor.author	González García, Esther
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa	es
dc.date.accessioned	2021-12-09T12:25:19Z
dc.date.available	2021-12-09T12:25:19Z
dc.date.issued	2021
dc.description.abstract	Water-deficit stresses such as drought and salinity are the most important factors limiting crop productivity. Hence, understanding the plant responses to these stresses is key for the improvement of their tolerance and yield. In this study M. truncatula plants were subjected to 250 mM NaCl as well as reduced irrigation (No-W) and 250 g/L polyethylene glycol (PEG)-6000 to induce salinity and drought stress, respectively, provoking a drop to −1.7 MPa in leaf water potential. The whole plant physiology and metabolism was explored by characterizing the stress responses at root, phloem sap and leaf organ level. PEG treatment led to some typical responses of plants to drought stress, but in addition to PEG uptake, an important impairment of nutrient uptake and a different regulation of carbon metabolism could be observed compared to No-W plants. No-W plants showed an important redistribution of antioxidants and assimilates to the root tissue, with a distinctive increase in root proline degradation and alkaline invertase activity. On the contrary, salinity provoked an increase in leaf starch and isocitrate dehydrogenase activity, suggesting key roles in the plant response to this stress. Overall, results suggest higher protection of salt-stressed shoots and non-irrigated roots through different mechanisms, including the regulation of proline and carbon metabolism, while discarding PEG as safe mimicker of drought. This raises the need to understand the effect at the whole plant level of the different strategies employed to apply water-deficit stress.	en
dc.description.sponsorship	This research was funded by the Public University of Navarra. V.C. was funded by the Basque Country Government (BFI-2012-97).	en
dc.format.extent	21 p.
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/zip	en
dc.identifier.doi	10.3390/ijms22062813
dc.identifier.issn	1422-0067 (Electronic)
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/41217
dc.language.iso	eng	en
dc.publisher	MDPI	en
dc.relation.ispartof	International Journal of Molecular Sciences 2021, 22, 2813	en
dc.relation.publisherversion	https://doi.org/10.3390/ijms22062813
dc.rights	© 2021 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.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Water stress	en
dc.subject	Phloem sap	en
dc.subject	PEG	en
dc.subject	Salt stress	en
dc.subject	Proline	en
dc.subject	Carbon metabolism	en
dc.subject	Ionome	en
dc.subject	Glutathione	en
dc.title	Strategies to aply water-deficit stress: similarities and disparities at the whole plant metabolism level in medicago truncatula	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication
relation.isAuthorOfPublication	af8ae2d2-468c-45cf-831f-a93a6e78c9e2
relation.isAuthorOfPublication	a0b6ed68-a7c7-4801-b494-542879441a98
relation.isAuthorOfPublication.latestForDiscovery	af8ae2d2-468c-45cf-831f-a93a6e78c9e2