scholarly journals The Relevance of a Physiological-Stage Approach Study of the Molecular and Environmental Factors Regulating Seed Germination in Wild Plants

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1084
Author(s):  
Ximena Gómez-Maqueo ◽  
Laura Figueroa-Corona ◽  
Jorge Arturo Martínez-Villegas ◽  
Diana Soriano ◽  
Alicia Gamboa-deBuen
Keyword(s):  
Wild Species ◽  
Life Histories ◽  
Physiological Responses ◽  
Morphological Characteristics ◽  
Wild Plants ◽  
Developmental Program ◽  
Germination Process ◽  
Physiological Stage ◽  
Molecular Bases ◽  
The Impact

Germination represents the culmination of the seed developmental program and is affected by the conditions prevailing during seed maturation in the mother plant. During maturation, the dormancy condition and tolerance to dehydration are established. These characteristics are modulated by the environment to which they are subjected, having an important impact on wild species. In this work, a review was made of the molecular bases of the maturation, the processes of dormancy imposition and loss, as well as the germination process in different wild species with different life histories, and from diverse habitats. It is also specified which of these species present a certain type of management. The impact that the domestication process has had on certain characteristics of the seed is discussed, as well as the importance of determining physiological stages based on morphological characteristics, to face the complexities of the study of these species and preserve their genetic diversity and physiological responses.

scholarly journals WILD SPECIES OF DAUCUS L. IN SELECTION AND PRESERVATION OF EX SITU IN THE CONDITIONS OF THE MOSCOW REGION

2021 ◽  
Vol 250 ◽  
pp. 130-140
Author(s):  
L.M. Sokolova ◽  
◽  
M.I. Ivanova ◽  
Keyword(s):  
Wild Species ◽  
Natural Habitat ◽  
Morphological Characteristics ◽  
Climatic Conditions ◽  
Moscow Region ◽  
Ex Situ ◽  
Wild Plants ◽  
Leaf Petiole ◽  
Daucus Carota L ◽  
Pests And Diseases

Wild ancestors and close relatives provide valuable genetic resources for improving cultivated carrots (Daucus carota L. subsp. Sativus (Hoffm.) Arcang.). Remaining knowledge gaps in taxonomy, distribution and characteristics of commercially valuable traits limit their wide usage in selection and negatively affect ex situ (gene bank) and in situ (natural habitat) conservation planning. Since some populations of wild plants are adapted to extreme climatic conditions, unfavorable soils, pests and diseases, they have significant potential to contribute to selection to solve emerging and foreseeable future problems in the agrotechnology of table carrots. The aim of the study is to study wild species of Daucus genus by morphological characteristics in the Moscow region in order to expand their usage in selection and ex situ preservation. According to the research results, it was found that the trait “anthocyanin colour of the leaf petiole” of D. setifolius (Turkey, Antalya) is a marker when hybridizing with cultivated carrots. The marker trait “anthocyanin colour of flowers” was recorded in D. carota L. var. maximus, D. carota (Tajikistan), D. carota (Uzbekistan, Kashkadarya region). D. carota subsp. halophilus is a genetic source for resistance to salt stress. In the future, the formation of Daucus germ plasm collections and ex situ preservation contribute to the expanded usage of wild species in selection for resistance of cultivated table carrots to bio- and abiostress.

scholarly journals Quantifying associations of the dietary share of ultra-processed foods with overall diet quality in First Nations peoples in the Canadian provinces of British Columbia, Alberta, Manitoba and Ontario

2017 ◽  
Vol 21 (1) ◽  
pp. 103-113 ◽  
Author(s):  
Malek Batal ◽  
Louise Johnson-Down ◽  
Jean-Claude Moubarac ◽  
Amy Ing ◽  
Karen Fediuk ◽  
...  
Keyword(s):  
Vitamin A ◽  
First Nations ◽  
Diet Quality ◽  
Saturated Fat ◽  
Wild Plants ◽  
Free Sugar ◽  
Processed Foods ◽  
Cross Sectional ◽  
Canadian Provinces ◽  
The Impact

AbstractObjectiveTo quantify associations of the dietary share of ultra-processed foods (UPF) with the overall diet quality of First Nations peoples.DesignA cross-sectional analysis of data from the First Nations Food, Nutrition and Environment Study, designed to contribute to knowledge gaps regarding the diet of First Nations peoples living on-reserve, south of the 60th parallel. A multistage sampling of communities was conducted. All foods from 24 h dietary recalls were categorized into NOVA categories and analyses were performed to evaluate the impact of UPF on diet quality.SettingWestern and Central Canada.SubjectsFirst Nations participants aged 19 years or older.ResultsThe sample consisted of 3700 participants. UPF contributed 53·9 % of energy. Compared with the non-UPF fraction of the diet, the UPF fraction had 3·5 times less vitamin A, 2·4 times less K, 2·2 times less protein, 2·3 times more free sugars and 1·8 times more Na. As the contribution of UPF to energy increased so did the overall intakes of energy, carbohydrate, free sugar, saturated fat, Na, Ca and vitamin C, and Na:K; while protein, fibre, K, Fe and vitamin A decreased. Diets of individuals who ate traditional First Nations food (e.g. wild plants and game animals) on the day of the recall were lower in UPF.ConclusionsUPF were prevalent in First Nations diets. Efforts to curb UPF consumption and increase intake of traditional First Nations foods and other fresh or minimally processed foods would improve diet quality and health in First Nations peoples.

scholarly journals Planning the Urban Waterfront Transformation, from Infrastructures to Public Space Design in a Sea-Level Rise Scenario: The European Union Prize for Contemporary Architecture Case

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 218
Author(s):  
Francesca Dal Cin ◽  
Fransje Hooimeijer ◽  
Maria Matos Silva
Keyword(s):  
Public Space ◽  
Sea Level ◽  
Urban Areas ◽  
Morphological Characteristics ◽  
Public Spaces ◽  
The European Union ◽  
Space Design ◽  
Urban Waterfront ◽  
Mies Van Der Rohe ◽  
The Impact

Future sea-level rises on the urban waterfront of coastal and riverbanks cities will not be uniform. The impact of floods is exacerbated by population density in nearshore urban areas, and combined with land conversion and urbanization, the vulnerability of coastal towns and public spaces in particular is significantly increased. The empirical analysis of a selected number of waterfront projects, namely the winners of the Mies Van Der Rohe Prize, highlighted the different morphological characteristics of public spaces, in relation to the approximation to the water body: near the shoreline, in and on water. The critical reading of selected architectures related to water is open to multiple insights, allowing to shift the design attention from the building to the public space on the waterfronts. The survey makes it possible to delineate contemporary features and lay the framework for urban development in coastal or riverside areas.

scholarly journals Impact of Wearing Graduated Compression Stockings on Psychological and Physiological Responses during Prolonged Sitting

2018 ◽  
Vol 15 (8) ◽  
pp. 1710 ◽  
Author(s):  
Masahiro Horiuchi ◽  
Chieko Takiguchi ◽  
Yoko Kirihara ◽  
Yukari Horiuchi
Keyword(s):  
Physiological Responses ◽  
Lower Limbs ◽  
Compression Stockings ◽  
Nerve Activity ◽  
Parasympathetic Nerve ◽  
Prolonged Sitting ◽  
Saliva Cortisol ◽  
Healthy Young People ◽  
Graduated Compression Stockings ◽  
The Impact

We investigated the impact of wearing vs. not wearing graduated compression stockings on psychological and physiological responses in 18 healthy young people (12 men and six women) during 3 h prolonged sitting. Profiled of Mood States (POMS) scores did not show marked differences between with and without stockings. A 3 h sit significantly decreased saliva cortisol in both conditions; with no differences between conditions. Wearing stockings suppressed a subjective uncomfortable sensation (e.g., pain; fatigue; swelling) in the lower limbs, as assessed by visual analogue scale (VAS). Increase in heart rate at 1 h and 3 h was significantly greater without than with stockings. In addition, high-frequency oscillations (HF: 0.15–0.4 Hz), used as an indicator of parasympathetic nerve activity, showed higher values with than without stockings throughout the 3 h sitting period—significantly higher at 1 h. When data for both conditions were pooled pre-to-post changes in saliva cortisol were positively associated with higher uncomfortable sensations of VAS in the lower limbs and negatively associated with changes in the Vigor subscale of POMS. Collectively, these findings suggest that wearing graduated compression stockings may benefit from subjective comfort and increased parasympathetic nerve activity.

scholarly journals A Long-Term Fine-Resolution Record of AVHRR Surface Temperatures for the Laurentian Great Lakes

2018 ◽  
Vol 10 (8) ◽  
pp. 1210
Author(s):  
Charles White ◽  
Andrew Heidinger ◽  
Steven Ackerman ◽  
Peter McIntyre
Keyword(s):  
Great Lakes ◽  
Morphological Characteristics ◽  
Laurentian Great Lakes ◽  
Environmental Research ◽  
Weighted Interpolation ◽  
Large Lakes ◽  
Fine Resolution ◽  
Observation Times ◽  
The Impact

Inland waters are warming at highly variable rates that often differ from regional air temperature trends. This variable warming is partially attributable to an individual lake’s geographical and morphological characteristics. In very large lakes, significant intralake variability in long-term warming trends has also been observed. In light of this intralake and interlake heterogeneity of lake surface water temperature (LSWT) and LSWT trends, we revisit the 1.1 km Advanced Very High Resolution Radiometer (AVHRR) record for the Laurentian Great Lakes. In this work, we have assembled a long-term (1986–2016) and high-spatial-resolution (0.018°) daily LSWT dataset using AVHRR record. Subtracting an empirically-determined mean diurnal cycle mitigates the effects of varying observation times. Adjustments in the georegistration of the images are made to reduce the impact of AVHRR navigational errors on the earlier platforms. Both the original daily composites, and a gap-filled product using locally weighted interpolation methods will be made available to support fine-scale physical and environmental research in the region.

Urban Finescale Forecasting Reveals Weather Conditions with Unprecedented Detail

2017 ◽  
Vol 98 (12) ◽  
pp. 2675-2688 ◽  
Author(s):  
R. J. Ronda ◽  
G. J. Steeneveld ◽  
B. G. Heusinkveld ◽  
J. J. Attema ◽  
A. A. M. Holtslag
Keyword(s):  
Local Governments ◽  
Weather Forecasting ◽  
Weather Prediction ◽  
Morphological Characteristics ◽  
Weather Conditions ◽  
Human Thermal Comfort ◽  
Forecasting System ◽  
The Impact ◽  
Urban Weather ◽  
Neighborhood Level

Abstract Urban landscapes impact the lives of urban dwellers by influencing local weather conditions. However, weather forecasting down to the street and neighborhood scale has been beyond the capabilities of numerical weather prediction (NWP) despite the fact that observational systems are now able to monitor urban climate at these scales. In this study, weather forecasts at intra-urban scales were achieved by exploiting recent advances in topographic element mapping and aerial photography as well as looking at detailed mappings of soil characteristics and urban morphological properties, which were subsequently incorporated into a specifically adapted Weather Research and Forecasting (WRF) Model. The urban weather forecasting system (UFS) was applied to the Amsterdam, Netherlands, metropolitan area during the summer of 2015, where it produced forecasts for the city down to the neighborhood level (a few hundred meters). Comparing these forecasts to the dense network of urban weather station observations within the Amsterdam metropolitan region showed that the forecasting system successfully determined the impact of urban morphological characteristics and urban spatial structure on local temperatures, including the cooling effect of large water bodies on local urban temperatures. The forecasting system has important practical applications for end users such as public health agencies, local governments, and energy companies. It appears that the forecasting system enables forecasts of events on a neighborhood level where human thermal comfort indices exceeded risk thresholds during warm weather episodes. These results prove that worldwide urban weather forecasting is within reach of NWP, provided that appropriate data and computing resources become available to ensure timely and efficient forecasts.

Physiological responses to acute stress and the drive to eat: The impact of perceived life stress

Appetite ◽  
2019 ◽  
Vol 133 ◽  
pp. 393-399 ◽  
Author(s):  
Rebecca R. Klatzkin ◽  
Allie Baldassaro ◽  
Saniya Rashid
Keyword(s):  
Life Stress ◽  
Acute Stress ◽  
Physiological Responses ◽  
The Impact

scholarly journals The risk of vicarious trauma among front-line and non-front-line midwives and nurses

2020 ◽  
Vol 2 (2) ◽  
pp. 1-4
Author(s):  
Süleyman Cemil Oğlak ◽  
Mehmet Obut
Keyword(s):  
Health Care Workers ◽  
Medical Staff ◽  
Vicarious Trauma ◽  
Vicarious Traumatization ◽  
Physiological Responses ◽  
Descriptive Study ◽  
Front Line ◽  
Care Workers ◽  
Hospital Wards ◽  
The Impact

Objective: This study aimed to investigate the impact of caring with pandemic patients on health care workers who worked in the front line versus their collegues from the same institution who remained in their usual hospital  wards. Material and methods: This prospective descriptive study was conducted during the Covid-19 pandemic from June 25, 2020 to July 03, 2020. A total of 107 licensed registered nurses enrolled the study. 58 of them were front-line nurses and 49 of them were nurses remained in their usual wards. All participants evaluated by the vicarious traumatization (VT) evaluation scale. Results: The VT scores of the front-line nurses were significantly higher than those of the non-front-line nurses (p<0.001). When the domains in the VT score were evaluated, it was seen that the psychological responses and physiological responses of the front-line nurses were significantly higher compared to the non-front-line nurses (p<0.001). Conclusion: Medical staff working on the FL for Covid-19 patients had higher scores of vicarious traumatization compared to medical staff serving in their usual wards. The challenges of prolonged care of Covid-19 patients will put pressure on these professionals, and the leadership must emphasize the importance of medical staff mental health for the better control of the pandemic.

scholarly journals REGRESSION ALGORITHMS IN ASSESSING THE IMPACT OF MORPHOLOGICAL AND MOTOR CHARACTERISTICS ON 60-M SPRINT

2019 ◽  
pp. 221
Author(s):  
Milica Filipović ◽  
Veroljub Stanković ◽  
Milan Čoh ◽  
Biljana Vitošević ◽  
Dragana Radosavljević
Keyword(s):  
Motor Skills ◽  
High Reliability ◽  
Statistical Significance ◽  
Vertical Jump ◽  
Age Groups ◽  
Morphological Characteristics ◽  
Sprint Performance ◽  
Explosive Power ◽  
Upper And Lower Extremities ◽  
The Impact

The aim of the present study was to identify the relationship between morphological parameters and motor skills that are important for sprint performance in children aged 8 to 16 years divided into four age groups (U10, U12, U14, U16) in both genders. The sample consisted of two hundred eighty one participant who trained sprinting in various athletic clubs. A prediction set of twenty-five variables for assessing morphological characteristics and motor skills was applied, and the criterion variable was a sprint at 60m. Using multiple correlation, it has been established that a large number of morphological characteristics are statistically significant positive correlation with the sprint, especially the longitudinal variables, while the variables of skinfolds showed a low negative statistical significance in relation to the given criterion. In the field of motor skills, the highest number of positive statistically significant correlations were found in the tests of explosive power of the upper and lower extremities, agility test and horizontal and vertical jump tests. In order to determine which morphological features and motor skills should be applied in sprint running training, we tested related attributes using different algorithms for data mining (LR, M5, KNN, SVM, MLP, RBF). The results suggests that the predictors that we use can continue to be applied with high reliability in assessing sprint performance, but also in the monitoring of the training process in order to profile the better sprint achievements.

Sign in / Sign up

Export Citation Format

Share Document