TY - JOUR
T1 - Warming differentially influences the effects of drought on stoichiometry and metabolomics in shoots and roots
AU - Gargallo-Garriga, Albert
AU - Sardans, Jordi
AU - Pérez-Trujillo, Míriam
AU - Oravec, Michal
AU - Urban, Otmar
AU - Jentsch, Anke
AU - Kreyling, Juergen
AU - Beierkuhnlein, Carl
AU - Parella, Teodor
AU - Peñuelas, Josep
PY - 2015/1/1
Y1 - 2015/1/1
N2 - © 2015 New Phytologist Trust2073 August 2015 10.1111/nph.13377 Full paper Research Full papers © 2015 The Authors. New Phytologist © 2015 New Phytologist Trust. 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. Copyright
AB - © 2015 New Phytologist Trust2073 August 2015 10.1111/nph.13377 Full paper Research Full papers © 2015 The Authors. New Phytologist © 2015 New Phytologist Trust. 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. Copyright
KW - Climate change
KW - Drought
KW - HPLC-MS
KW - Metabolomics
KW - Nitrogen : phosphorus (N : P)
KW - Nuclear magnetic resonance (NMR)
KW - Stoichiometry
KW - Warming
U2 - 10.1111/nph.13377
DO - 10.1111/nph.13377
M3 - Article
VL - 207
SP - 591
EP - 603
JO - New Phytologist
JF - New Phytologist
SN - 0028-646X
IS - 3
ER -