25 documents found, page 1 of 3
Common dolphin's shipping noise risk assessment on the Portuguese coast
Spadoni, Giulia; Duarte, Ricardo; Soares, Cristiano; Fernandez, Marc; Jesus, SergioOcean noise generated by human activities at sea has been increasing over the decades, affecting marine eco systems. Ship traffic flow between the Mediterranean or South Atlantic and northern Europe makes the coast of Portugal one of the most intense shipping highways on a global scale. Among the cetaceans of the coast of Portugal, the common dolphin (Delphinus delphis) was selected as a target species. Based o...
Are tomato plants co-exposed to heat and salinity able to ensure a proper carbo...
Rodrigues, Francisca; Sousa, Bruno; Soares, Cristiano; Moreira, Diana; Pereira, Cláudia; Moutinho-Pereira, José; Cunha, Ana; Fidalgo, FernandaAbiotic stress combinations, such as high temperatures and soil/water salinization, severely threaten crop productivity worldwide. In this work, an integrative insight into the photosynthetic metabolism of tomato plants subjected to salt (100 mM NaCl) and/or heat (42 °C; 4 h/day) was performed. After three weeks, the stress combination led to more severe consequences on growth and photosynthetic pigments than t...
Enzymatic and non-enzymatic antioxidant responses of young tomato plants (cv. m...
Machado, Joana; Vasconcelos, Marta W.; Soares, Cristiano; Fidalgo, Fernanda; Heuvelink, Ep; Carvalho, Susana M. P.This study aims to perform a broad analysis of the antioxidant (AOX) responses of young tomato plants exposed to single and combined mild nitrogen (N) and water deficits through the evaluation of oxidative biomarkers, non-enzymatic and enzymatic AOX components. ‘Micro-Tom’ seedlings were subjected to four treatments: control (CTR; 100%N + 100%W), N deficit (N; 50%N), water deficit (W; 50%W), and combined defici...
Young tomato plants respond differently under single or combined mild nitrogen ...
Machado, Joana; Vasconcelos, Marta W.; Soares, Cristiano; Fidalgo, Fernanda; Heuvelink, Ep; Carvalho, Susana M.P.This study aimed to understand the morphophysiological responses and primary metabolism of tomato seedlings subjected to mild levels of nitrogen and/or water deficit (50% N and/or 50% W). After 16 days of exposure, plants grown under the combined deficit showed similar behavior to the one found upon exposure to single N deficit. Both N deficit treatments resulted in a significantly lower dry weight, leaf area, ...
Early activation of antioxidant responses in Ni-stressed tomato cultivars deter...
Spormann, Sofia; Soares, Cristiano; Martins, Viviana; Azenha, Manuel; Gerós, H.; Fidalgo, FernandaThroughout their life cycle, plants are subjected to a variety of environmental constraints, including abiotic stresses. The present study aimed at characterizing the responses of the two tomato cultivars Gold Nugget (GN) and Purple Calabash (PC) exposed to a combination of nickel (Ni) and drought. The following hypotheses were pursued: (i) the activation of responses to one stressor eases further adjustments t...
Impact of combined heat and salt stresses on tomato plants-insights into nutrie...
Sousa, Bruno; Rodrigues, Francisca; Soares, Cristiano; Martins, Maria; Azenha, Manuel; Lino-Neto, T.; Santos, Conceicao; Cunha, Ana; Fidalgo, FernandaCurrently, salinity and heat are two critical threats to crop production and food security which are being aggravated by the global climatic instability. In this scenario, it is imperative to understand plant responses to simultaneous exposure to different stressors and the cross-talk between underlying functional mechanisms. Thus, in this study, the physiological and biochemical responses of tomato plants (Sol...
A methodology for shipping noise field calibration and excess noise estimation:...
Jesus, Sergio; Soares, Cristiano; Romagosa, Miriam; Cascão, Irma; Duarte, Ricardo; Zabel, Friedrich; Silva, Mónica A.Economic globalization and the continuous search for food, energy and raw materials led to an estimated 3 dB/decade increase of ocean noise intensity. Determining the level of anthropogenic noise, the so-called excess noise, and building identifiable meaningful indicators for supporting marine management policies currently requires extensive observation data and computer modeling. For modeling purposes, in this...
CHARACTERISTICS OF RESEARCH WITH APPLICATION OF INSOLVENCY PREDICTION MODELS: A...
Soares, Cristiano; Marin, Luiz Otávio; Santos, Edicreia Andrade dosThis study purpose to analyze the characteristics of the research carried out on models of insolvency prediction in the Brazilian context, based on a fragment of the literature. To this end, a Bibliographic Portfolio was created based on a search in the SPELL database - Scientific Periodicals Electronic Library, using the term insolvency forecasting models, resulting in 18 articles for the analysis of basic and...
Silicon improves the redox homeostasis to alleviate glyphosate toxicity in toma...
Soares, Cristiano; Nadais, Pedro; Sousa, Bruno; Pinto, Edgar; Ferreira, Isabel M. P. V. O.; Pereira, Ruth; Fidalgo, FernandaGiven the widespread use of glyphosate (GLY), this agrochemical is becoming a source of contamination in agricultural soils, affecting non-target plants. Therefore, sustainable strategies to increase crop tolerance to GLY are needed. From this perspective and recalling silicon (Si)’s role in alleviating different abiotic stresses, the main goal of this study was to assess if the foliar application of Si, either...
Foliar application of sodium nitroprusside boosts solanum lycopersicum l. toler...
Soares, Cristiano; Rodrigues, Francisca; Sousa, Bruno; Pinto, Edgar; Ferreira, Isabel M. P. V. O.; Pereira, Ruth; Fidalgo, FernandaStrategies to minimize the effects of glyphosate (GLY), the most used herbicide worldwide, on non-target plants need to be developed. In this context, the current study was designed to evaluate the potential of nitric oxide (NO), provided as 200 µM sodium nitroprusside (SNP), to ameliorate GLY (10 mg kg−1 soil) phytotoxicity in tomato plants. Upon herbicide exposure, plant development was majorly inhibited in s...