Ecometabolomics for a Better Understanding of Plant Responses and Acclimation to Abiotic Factors Linked to Global Change

0531446 - ÚVGZ 2021 RIV CH eng J - Článek v odborném periodiku
Sardans, Jordi - Gargallo-Garriga, Albert - Urban, Otmar - Klem, Karel - Walker, T.W.N. - Holub, Petr - Janssens, I. A. - Penuelas, Josep
Ecometabolomics for a Better Understanding of Plant Responses and Acclimation to Abiotic Factors Linked to Global Change.
Metabolites. Roč. 10, č. 6 (2020), č. článku 239. E-ISSN 2218-1989
Grant CEP: GA MŠMT(CZ) EF16_019/0000797
Výzkumná infrastruktura: CzeCOS III - 90123
Institucionální podpora: RVO:86652079
Klíčová slova: free amino-acids * high-nitrogen deposition * carbon-dioxide * elevated co2 * arabidopsis-thaliana * secondary metabolism * terpene content * jasmonic acid * stress * drought * flavonoids * free amino acids * gas chromatography-mass spectrometry (GC-MS) * proton nuclear magnetic resonance spectrometry (H-1-NMR) * isoflavonoids * liquid chromatography-mass spectrometry (LC-MS) * phenolics * shikimate acid * soluble sugars * terpenes
Obor OECD: Biochemistry and molecular biology
Impakt faktor: 4.932, rok: 2020
Způsob publikování: Open access
https://www.mdpi.com/2218-1989/10/6/239

The number of ecometabolomic studies, which use metabolomic analyses to disentangle organisms' metabolic responses and acclimation to a changing environment, has grown exponentially in recent years. Here, we review the results and conclusions of ecometabolomic studies on the impacts of four main drivers of global change (increasing frequencies of drought episodes, heat stress, increasing atmospheric carbon dioxide (CO2) concentrations and increasing nitrogen (N) loads) on plant metabolism. Ecometabolomic studies of drought effects confirmed findings of previous target studies, in which most changes in metabolism are characterized by increased concentrations of soluble sugars and carbohydrate derivatives and frequently also by elevated concentrations of free amino acids. Secondary metabolites, especially flavonoids and terpenes, also commonly exhibited increased concentrations when drought intensified. Under heat and increasing N loads, soluble amino acids derived from glutamate and glutamine were the most responsive metabolites. Foliar metabolic responses to elevated atmospheric CO(2)concentrations were dominated by greater production of monosaccharides and associated synthesis of secondary metabolites, such as terpenes, rather than secondary metabolites synthesized along longer sugar pathways involving N-rich precursor molecules, such as those formed from cyclic amino acids and along the shikimate pathway. We suggest that breeding for crop genotypes tolerant to drought and heat stress should be based on their capacity to increase the concentrations of C-rich compounds more than the concentrations of smaller N-rich molecules, such as amino acids. This could facilitate rapid and efficient stress response by reducing protein catabolism without compromising enzymatic capacity or increasing the requirement for re-transcription and de novo biosynthesis of proteins.
Trvalý link: http://hdl.handle.net/11104/0310111