Whole-Plant Water Use in Field Grown Grapevine: Seasonal and Environmental Effects on Water and Carbon Balance
| العنوان: | Whole-Plant Water Use in Field Grown Grapevine: Seasonal and Environmental Effects on Water and Carbon Balance |
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| المؤلفون: | Alicia Pou, Cyril Douthe, Hipólito Medrano, Esther Hernández-Montes, José Mariano Escalona, Ignacio Tortosa |
| المساهمون: | Ministerio de Ciencia y Tecnología (España), European Commission, Universidad de Las Islas Baleares |
| المصدر: | Frontiers in Plant Science Frontiers in Plant Science, Vol 9 (2018) |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, whole plant chambers, water use efficiency, chemistry.chemical_element, Plant Science, lcsh:Plant culture, 01 natural sciences, Water scarcity, water stress, Respiration, lcsh:SB1-1110, Water-use efficiency, Transpiration, Original Research, 2. Zero hunger, Abiotic component, carbon balance, Phenology, 04 agricultural and veterinary sciences, 15. Life on land, grapevine, Agronomy, chemistry, 13. Climate action, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Environmental science, grapevine, water use efficiency, whole plant chambers, water stress, carbon balance, Carbon, Water use, 010606 plant biology & botany |
| الوصف: | Water scarcity is a main challenge in vineyards sustainability in most of the grapevine areas now and even more in near future due to climatic change perspectives. In consequence, water use efficiency (WUE) measurements are of the highest interest to improve the sustainability of this crop. The vast majority of WUE measurements relays on measurements of leaf carbon and water fluxes at leaf-level. However, less data are available at the whole-plant level, and for the moment those data are not totally coincident with conclusions reached at leaf scale. In this study, we used whole-plant chambers able to enclose an entire plant of 12 years old to measure at the same time water and carbon fluxes under realistic field grown conditions. The main objectives were to identify the technical issues interfering the whole-plant measurements and track the environmental and other abiotic factors that can affect water and carbon balance, i.e., WUE at the whole-plant scale. To achieve those objectives, we measured whole-plant water and carbon fluxes in grapevine exposed to two different water regimes at three phenological stages [pea size (July), ripening (August), and harvest (September)]. In September, measurements were repeated under high CO to also check its effect at the whole-plant scale. The results indicate that water and carbon fluxes are well coordinated under both water availability treatments. Under drought conditions, both fluxes were drastically reduced, but surprisingly the estimated WUE resulted not improved but decreased, contrarily to what is shown at the leaf scale. The phenology (September) also strongly decreased both water and carbon fluxes when compared to measurements in July. We hypostatized that harvest load respiration rates could have an important weight on the whole-plant net carbon exchange (NCE). Finally, high CO measurements, after correction for leaks, indicated an increase of whole-plant NCE as well as increased whole-plant WUE, as expected. Several technical issues were identified, like 1/instability of [CO] during the night period that prevent robust estimation of whole-plant respiration and 2/condensation during last night and sun-rise hours which may affect the estimation of daily plant transpiration. This work has been developed with financial support from the Spanish Ministry of Science and Technology (project AGL-2014-54201-C4-1R AEI/FEDER, UE) and by the UE project ERA-NET COFOUNMD FACCE SURPLUS, (Ref: 652615). We would like to thank Mr. Miquel Mas and collaborators of the UIB Experimental Field and Greenhouses which are supported by the UIBGrant 15/2015. |
| تدمد: | 1664-462X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cdb0ae156ef6e4d4470ab3ab7c224a3 https://pubmed.ncbi.nlm.nih.gov/30483275 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5cdb0ae156ef6e4d4470ab3ab7c224a3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1664462X |
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