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Pàgina inicial > Articles > Articles publicats > Opposite metabolic responses of shoots and roots to drought |
Data: | 2014 |
Resum: | Shoots and roots are autotrophic and heterotrophic organs of plants with different physiological functions. Do they have different metabolomes? Do their metabolisms respond differently to environmental changes such as drought? We used metabolomics and elemental analyses to answer these questions. First, we show that shoots and roots have different metabolomes and nutrient and elemental stoichiometries. Second, we show that the shoot metabolome is much more variable among species and seasons than is the root metabolome. Third, we show that the metabolic response of shoots to drought contrasts with that of roots; shoots decrease their growth metabolism (lower concentrations of sugars, amino acids, nucleosides, N, P, and K), and roots increase it in a mirrored response. Shoots are metabolically deactivated during drought to reduce the consumption of water and nutrients, whereas roots are metabolically activated to enhance the uptake of water and nutrients, together buffering the effects of drought, at least at the short term. |
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: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Chemical biology ; Climate sciences |
Publicat a: | Scientific reports, Vol. 4 No. 6829, p. 1-7 (Oct. 2014) , ISSN 2045-2322 |
7 p, 1.5 MB |