RESUMO
Biostimulants are heterogeneous products designed to support plant development and to improve the yield and quality of crops. Here, we focused on the effects of triacontanol, a promising biostimulant found in cuticle waxes, on tomato growth and productivity. We examined various phenological traits related to vegetative growth, flowering and fruit yield, the metabolic profile of fruits, and the response of triacontanol-treated plants to salt stress. Additionally, a proteomic analysis was conducted to clarify the molecular mechanisms underlying triacontanol action. Triacontanol application induced advanced and increased blooming without affecting plant growth. Biochemical analyses of fruits showed minimal changes in nutritional properties. The treatment also increased the germination rate of seeds by altering hormone homeostasis and reduced salt stress-induced damage. Proteomics analysis of leaves revealed that triacontanol increased the abundance of proteins related to development and abiotic stress, while down-regulating proteins involved in biotic stress resistance. The proteome of the fruits was not significantly affected by triacontanol, confirming that biostimulation did not alter the nutritional properties of fruits. Overall, our findings provide evidence of the effects of triacontanol on growth, development, and stress tolerance, shedding light on its mechanism of action and providing new insights into its potential in agricultural practices.
Assuntos
Álcoois Graxos , Frutas , Solanum lycopersicum , Solanum lycopersicum/efeitos dos fármacos , Solanum lycopersicum/metabolismo , Solanum lycopersicum/crescimento & desenvolvimento , Álcoois Graxos/farmacologia , Frutas/efeitos dos fármacos , Frutas/metabolismo , Frutas/química , Proteômica/métodos , Fenótipo , Proteínas de Plantas/metabolismo , Folhas de Planta/efeitos dos fármacos , Folhas de Planta/metabolismo , Germinação/efeitos dos fármacos , Estresse Salino , Sementes/efeitos dos fármacos , Sementes/metabolismo , Sementes/crescimento & desenvolvimentoRESUMO
Most perennial crops sensitive to water scarcity, such as citrus, can benefit from efficient water management, which allows for reduced water consumption while increasing crop production on a long-term basis. However, when implementing water-saving strategies, it is necessary to monitor soil and/or plant water status in order to determine crop water demand. A plethora of devices providing indirect measurements of volumetric soil water content, such as the "drill and drop" multi-sensors probes (Sentek, Inc., Stepney, Australia), have been developed over the last decade. The objective of the paper was to analyse time-series of soil water content profiles and meteorological data collected in an adult citrus orchard over three years of field observations (2017-2020) in order to estimate actual crop evapotranspiration and derive crop coefficients. Simultaneous measurements of sap fluxes also allowed for the estimation of the basal crop coefficient, Kcb, used as a control variable. The temporal dynamics of soil water content profiles following rainfall or irrigation events provided information on soil evaporation, root water uptake, and actual crop transpiration. After soil wetting events, in particular, it was possible to recognize patterns of actual crop evapotranspiration similar to those detected with sap flow sensors. The knowledge of actual crop evapotranspiration at the daily time-step, in conjunction with the corresponding reference crop evapotranspiration, allowed for appropriate estimations of the crop coefficient associated with the various development stages. The proposed method provided interesting insights into the dynamics of root water uptake and crop evapotranspiration of the studied citrus orchard, and it represents a promising tool for precise irrigation scheduling in other agroecosystems.
Assuntos
Citrus , Solo , Irrigação Agrícola , Produtos Agrícolas , Transpiração Vegetal , ÁguaRESUMO
OBJECTIVE: The objective of this review was to gain a better understanding of the interprofessional collaboration between health care professionals from the patients' point of view during hospitalisation; the influence of interprofessional collaboration on patient care, safety, and well-being; and patients' perspectives of their role in the interprofessional collaboration process. INTRODUCTION: Interprofessional collaboration is a key factor in improving patient health care outcomes and safety through better communication between health care professionals, better teamwork, and better care coordination. However, implementing interprofessional collaboration in the clinical setting can prove complex. Patients are increasingly interested in becoming partners within the health care system. They have the potential to contribute to their own safety and to observe professionals during the care process, thus gaining a better understanding of the interprofessional collaboration process and facilitating changes in the behavior of health care professionals. INCLUSION CRITERIA: This review considered qualitative research and mixed-method studies. Participants were hospitalized patients. Studies were included when they explored i) patients' perceptions of interprofessional collaboration, ii) the influence of interprofessional collaboration on patients' care, safety, or well-being, or iii) patients' perceptions of their own role in interprofessional collaboration. Qualitative studies focusing only on the care process or families' points of view were excluded. METHODS: Searches of six databases including MEDLINE, CINAHL, Embase, Web of Science, PsycINFO, and Sociological Abstract, limited to English, French, and German were conducted from March 2017 to June 2018. Assessment of methodological quality of studies was performed using the JBI Qualitative Assessment and Review Instrument. Data were extracted using the standardized data extraction tool from JBI. Data synthesis following the JBI approach of meta-aggregation was performed. The level of confidence for each synthesized finding was established based on ConQual. RESULTS: A total of 22 studies were included, which resulted in 89 findings and 24 categories. Eight synthesized findings were generated: patients' perceptions of interprofessional collaboration based on personal experiences and observations; patients' experiences with effective or ineffective interprofessional communication; patients' experience with power imbalance and paternalistic attitudes; patients' perceptions of key factors for a confident relationship with the interprofessional health care team; patients' need for comprehension of discussions between health care professionals; patients' perceptions of their role in an interprofessional health care team; patients' perceptions of opportunities for empowerment in interprofessional health care teams; and patients' need for humanizing care from interprofessional health care teams. The level of confidence of synthesized findings varied from low to moderate according to ConQual. CONCLUSIONS: This systematic review synthesized the perspectives of hospitalized patients regarding interprofessional collaboration and their perceived role in collaborative practices. Hospitalized patients observe interprofessional collaboration, either directly or indirectly, and the way interprofessional collaboration is performed may impact both their care and their well-being. However, little evidence has been found regarding the impact of interprofessional collaboration on patient safety. Patients' perspectives on their perceived role is not unanimous; some patients want to play an active role in the collaborative process, whereas others prefer to trust the health care professionals' expertise. Health care professionals should consider patients' preferences and act accordingly regarding both the collaborative process and the inclusion of the patients in collaborative practices.
Assuntos
Pessoal de Saúde , Equipe de Assistência ao Paciente , Atenção à Saúde , Hospitalização , Humanos , Pesquisa QualitativaRESUMO
REVIEW QUESTION/OBJECTIVE: The objective of this qualitative systematic review is to examine the available evidence on interprofessional collaboration from the patients' perspectives, specifically on: i) interprofessional collaboration in adult or pediatric wards during hospitalization; ii) the influence of interprofessional collaboration on the patient's care, safety and well-being in adult or pediatric wards during hospitalization; and (iii) the patient's role in the interprofessional collaboration process in adult or pediatric wards during hospitalization.