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| http://dx.doi.org/10.1104/pp.40.3.535 | DOI Listing |
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Leaf functional traits highlight phenotypic variation of two tree species in the urban environment.
Front Plant Sci
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Department of Biological Sciences, University of Illinois Chicago, Chicago, IL, United States.
Urbanization is transforming landscapes globally, altering environmental conditions that affect ecosystem functioning, particularly in urban areas where trees are crucial for regulating microclimates, improving air quality, and sustaining biodiversity. This study investigates the environmental differences and tree leaf structure and morphology in urban and suburban sites in the Chicago Metropolitan Region. The leaf functional traits of Norway Maple and Little - leaved Linden were studied in three locations in the summer of 2023: an urban park (University of Illinois Chicago, Chicago, IL), a suburban park (Morton Arboretum, Lisle, IL), and a suburban residential site (Lombard, IL).
View Article and Find Full Text PDFAdaptation of a HIV Prevention Mobile App for Transmasculine People: A Pilot Acceptability and Feasibility Study.
Transgend Health
December 2024
Department of Epidemiology, Emory University, Atlanta, Georgia, USA.
Purpose: Using a community-engaged approach, we adapted a human immunodeficiency virus (HIV) prevention smartphone app, Transpire, to meet the HIV and sexually transmitted infection (STI) prevention needs of transgender men and other transmasculine people. We conducted a pilot study to assess the feasibility and acceptability of the app among participants in two cities in the southeastern United States.
Methods: Participants were recruited online and through community partners.
Better safe than sorry: the unexpected drought tolerance of a wetland plant (Cyperus alternifolius L.).
Physiol Plant
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Dipartimento di Scienze della Vita, Università di Trieste, Trieste, Italia.
A common assumption of plant hydraulic physiology is that high hydraulic efficiency must come at the cost of hydraulic safety, generating a trade-off that raises doubts about the possibility of selecting both productive and drought-tolerant herbaceous crops. Wetland plants typically display high productivity, which requires high hydraulic efficiency to sustain transpiration rates coupled to CO uptake. Previous studies have suggested high vulnerability to xylem embolism of different wetland plants, in line with expected trade-offs.
View Article and Find Full Text PDFDifferences in drought avoidance rather than differences in the fast versus slow growth spectrum explain distributions of two Asclepias species.
Physiol Plant
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Department of Biology, Augustana University, Sioux Falls, SD, USA.
Understanding factors that determine a species' geographical range is crucial for predicting climate-induced range shifts. Two milkweed species, Asclepias syriaca and Asclepias speciosa, have overlapping ranges along a moisture gradient in North America and are primary food sources for endangered monarch caterpillars. With decreasing moisture, long-lived species often exhibit slower growth and greater drought tolerance, while many annual species exhibit faster growth strategies.
View Article and Find Full Text PDFEnhancing the water use efficiency model predictions for Platycladus orientalis and Quercus variabilis: Integrating the dynamics of carbon dioxide concentration and soil water availability.
Sci Total Environ
December 2024
Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, Beijing, China; Beijing Yanshan Forest Ecosystem Positioning Observation and Research Station, Beijing 100093, China.
Water use efficiency (WUE) is a tracer for plants on the trade-off exchange of water and carbon dioxide between terrestrial ecosystems and the atmosphere; therefore, a dynamic investigation of WUE and its driving factors will be of great significance to optimize water and carbon fitness and predict the plants' response to climate change. In our study, a modified water use efficiency model was proposed to improve the quantification of carbon and water processes by adding a photosynthesis-g simulation dependent on CO concentration and soil moisture to the photosynthetic transpiration model (noted as SMPTSB model). Actual measured water use efficiencies were respectively obtained by the gas exchange measurements (WUE) and the δC that defined as the carbon-heavy isotope of the water-soluble compound in leaves (WUE) of three-year tree saplings of Platycladus orientalis (L.
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