Warming differentially influences the effects of drought on stoichiometry and metabolomics in shoots and roots
Gargallo-Garriga, Albert (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Pérez-Trujillo, Míriam (Universitat Autònoma de Barcelona. Servei de Ressonància Magnètica Nuclear)
Oravec, Michal (Akademie věd České Republiky. Centrum výzkumu globální změny)
Urban, Otmar (Akademie věd České Republiky. Centrum výzkumu globální změny)
Jentsch, Anke (Universität Bayreuth. Disturbance Ecology and Vegetation Dynamics)
Kreyling, Juergen (Universität Bayreuth. Department of Biogeography)
Beierkuhnlein, Carl (Universität Bayreuth. Department of Biogeography)
Parella Coll, Teodor (Universitat Autònoma de Barcelona. Servei de Ressonància Magnètica Nuclear)
Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)

Data:	2015
Resum:	Plants in natural environments are increasingly being subjected to a combination of abiotic stresses, such as drought and warming, in many regions. The effects of each stress and the combination of stresses on the functioning of shoots and roots have been studied extensively, but little is known about the simultaneous metabolome responses of the different organs of the plant to different stresses acting at once. - We studied the shift in metabolism and elemental composition of shoots and roots of two perennial grasses, Holcus lanatus and Alopecurus pratensis, in response to simultaneous drought and warming. -These species responded differently to individual and simultaneous stresses. These responses were even opposite in roots and shoots. In plants exposed to simultaneous drought and warming, terpenes, catechin and indole acetic acid accumulated in shoots, whereas amino acids, quinic acid, nitrogenous bases, the osmoprotectants choline and glycine betaine, and elements involved in growth (nitrogen, phosphorus and potassium) accumulated in roots. Under drought, warming further increased the allocation of primary metabolic activity to roots and changed the composition of secondary metabolites in shoots. -These results highlight the plasticity of plant metabolomes and stoichiometry, and the different complementary responses of shoots and roots to complex environmental conditions.
Ajuts:	European Commission 610028 Ministerio de Economía y Competitividad CGL2013-48074-P Ministerio de Economía y Competitividad CTQ2012-32436 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-274
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Climate change ; Drought ; HPLC-MS ; Metabolomics ; Nitrogen:phosphorus (N:P) ; Nuclear magnetic resonance (NMR) ; Stoichiometry ; Warming
Publicat a:	The new phytologist, Vol. 204, issue 3 (Aug. 2015) , p. 591-603, ISSN 1469-8137

DOI: 10.1111/nph.13377

Post-print 33 p, 578.6 KB

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