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dc.contributor.authorSánchez Sánchez, Elena
dc.contributor.authorLino Villanueva, Gladys
dc.contributor.authorArias, Claudia
dc.contributor.authorSerrat, Xavier
dc.contributor.authorNogués, Salvador
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
dc.identifier.citationSanchez, E. [et al.]. Photosynthesis, resource acquistion and growth responses of two biomass crops subjected to water stress. "Journal of Plant Sciences", 2018, vol. 6, núm. 3, p. 68-86.
dc.description.abstractThis study compares photosynthesis, growth, 13C and 15N labelling patterns of two biomass crops (Arundo donax L. and Panicum virgatum L.) grown under water stress in greenhouse conditions. Plants were exposed to three water stress levels: control (C, 100% Pot Capacity), mild stress (MS, 50% PC) and severe stress (SS, 25% PC). Photosynthesis, fluorescence parameters and relative water content were measured at the beginning (Ti) and the end of the experiment (Tf). Biomass parameters were measured at Tf. Short-term double labelling with 13C and 15N stable isotopes was performed in both species. Isotopic analyses of total organic matter, total soluble sugars and the CO2 respired were undertaken at T0 (prelabelling), T1 (24h after labelling) and T2 (7 days after labelling). Immediately after the 13C and 15N labelling, stems and rhizomes seemed to be the main sinks for labelled carbon and nitrogen in both species. Moreover, not all of the labelled carbon and nitrogen substrate was used by plant metabolism after seven days. Decreases in photosynthesis parameters were observed as a consequence of the increase in water stress (WS) in both species, with a greater magnitude decline in giant reed than in switchgrass. A decrease in height, number of green leaves and total dry weight due to WS was observed in both species. Both species were more 13C-enriched and more 15N-depleted during the increases in WS due to lower stomatal conductance and transpiration. In general, WS accelerated plant phenology and, consequently, the accumulation of storage compounds in the rhizome occurred in response to stress. This effect was more clearly visible in switchgrass than in giant reed
dc.format.extent19 p.
dc.publisherScience Publishing Group
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria agroalimentària::Agricultura::Reg
dc.subject.otherArundo donax L.
dc.subject.otherPanicum virgatum L.
dc.subject.other13C and 15N Isotope Labelling
dc.subject.otherWater Stress
dc.titlePhotosynthesis, resource acquistion and growth responses of two biomass crops subjected to water stress
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/289642/EU/Optimization of Perennial Grasses for Biomass Production/OPTIMA
local.citation.authorSanchez, E.; Lino , G.; Arias , C.; Serrat, X.; Nogués , S.
local.citation.publicationNameJournal of Plant Sciences
dc.description.sdgObjectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables
dc.description.sdgObjectius de Desenvolupament Sostenible::13 - Acció per al Clima

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