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135 results for “functional strategy”
Functional traits and drought strategy predict leaf thermal tolerance
<p>Heat stress imposes an important physiological constraint on native plant species – one that will only worsen with human-caused climate change. Indeed, rising temperatures have already contributed to large-scale plant mortality events across the globe. These impacts may be especially severe in cities, where the urban heat island effect amplifies climate warming. Understanding how plant species will respond physiologically to rising temperatures and how these responses differ among plant functional groups is critical for predicting future biodiversity scenarios and making informed land management decisions. In this study, we evaluated the effects of elevated temperatures on a functionally and taxonomically diverse group of woody native plant species in a restored urban nature preserve in southern California using measurements of chlorophyll fluorescence as an indicator of leaf thermotolerance. Our aim was to determine if species' traits and drought strategies could serve as useful predictors of thermotolerance. We found that leaf thermotolerance differed among species with contrasting drought strategies, and several leaf-level functional traits were significant predictors of thermotolerance thresholds. Drought deciduous species with high specific leaf area, high rates of transpiration, and low water-use efficiency were the most susceptible to heat damage, while evergreen species with sclerophyllous leaves, high relative water content, and high water-use efficiency maintained photosynthetic function at higher temperatures. While these native shrubs and trees are physiologically equipped to withstand relatively high temperatures in this Mediterranean-type climate, hotter conditions imposed by climate change and urbanization may exceed the tolerance thresholds of many species. We show that leaf functional traits and plant drought strategies may serve as useful indicators of species' vulnerabilities to climate change, and this information can be used to guide restoration and conservation in a warmer world.</p>
The Effect in Renal Function on Patients With Type 1 Cardiorenal Syndrome Treated With Two Strategies of Furosemide.
ClinicalTrials.gov study NCT04393493. IPD Sharing: NO. Countries: 1. Publications: 1.
Function Magnetic Resonance Imaging to Assess Two Therapeutic Strategies in Multiple Sclerosis (NeuroRehEM).
ClinicalTrials.gov study NCT05270239. IPD Sharing: NO. Countries: 1. Publications: 6.
Trial Evaluating New Strategy in the Functional Assessment of 3-vessel Disease Using SYNTAXII Score in Patients With PCI
ClinicalTrials.gov study NCT02015832. IPD Sharing: Not stated. Countries: 4. Publications: 4.
Stable immune function during moult regardless of age-specific moulting strategy in a European passerine
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The functional role of sibling aggression and “best of a bad job” strategies in cichlid juveniles
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Contrasting soil- and canopy-nurse effects on dependent species in metalliferous systems may be explained by dominant plant functional strategies
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Dataset for Ongole at al. - Functional traits predict tree-level phenological strategies in a mesic Indian savanna
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Functional traits and drought strategy predict leaf thermal tolerance
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Three eco-physiological strategies of response to drought maintain the form and function of a tropical montane grassland
<p>1. Ecologists seek a general scheme to classify the diversity of plant responses to environmental factors into a few strategies (e.g. competitor -C, stress-tolerant -S, ruderal-R), while plant physiologists seek a mechanistic scheme to explain such different responses (e.g. tolerance, escape, avoidance). So far, few attempts have been made to combine both perspectives into plant eco-physiological strategies. Moreover, the relative contribution of different strategies to maintain both community structure and ecosystem functioning during drought has rarely been assessed. This limits our capacity to predict how extreme events caused by climate change will affect plant communities.</p> <p>2. Here, we present an integrated framework to identify plant eco-physiological strategies and to estimate their contribution to community originality (diversity of trait-combinations), dominance (species relative frequency), and ecosystem functioning (productivity and evapotranspiration).</p> <p>3. We applied this framework in a tropical montane grassland and found three co-occurring eco-physiological strategies in this community (S-tolerance/avoidance, CS-escape/tolerance and CR-escape/avoidance). While CS-species contributed more to dominance and functionality, CR- and S-species contributed more to originality. Therefore, all three strategies were important to support the grassland form and function.</p> <p><i>Synthesis</i>: Plants exhibit different strategies, as well as different contributions to community and ecosystem attributes. We developed an integrated approach to both identify strategies and estimate their relative contribution. Thereby, as droughts intensify, we can better predict which plants are more likely to be lost and how their loss will impact the communities and ecosystem where they occur. This knowledge is necessary for specifying conservation priorities and for developing more efficient conservation practices.</p>
Raw data for the article "Interrupted Polonovski strategy for the synthesis of functionalized amino acids and peptides"
<p>Raw NMR, IR, and MS data for the article "Interrupted Polonovski strategy for the synthesis of functionalized amino acids and peptides" published in Organic Letters, DOI: </p> <p><a title="DOI URL" href="https://doi.org/10.1021/acs.orglett.3c03603">https://doi.org/10.1021/acs.orglett.3c03603</a></p> <p>The number of the folders either correspond to compounds numbers in the article or the name of the folder is self-describing. All details concerning conditions and equipment for measurements can be found in the supporting information of the article. For convenience, the word file version of the supporting information can be found on the top of the raw data folder.</p>
Functional connectomes denoised with various strategies
<p>Dataset denoised with the following strategies:</p> <p>https://github.com/SIMEXP/fmriprep-denoise-benchmark/code/benchmark_strategies.json</p> <p>Atlas used:</p> <p>Schaefer 7 network 400 ROIs<br> <br> Preprocessing:</p> <p>fMRIPrep LTS 20.2.1</p> <pre><code class="language-bash">singularity run --cleanenv \ -B $SLURM_TMPDIR:/DATA \ -B /PATH/TO/templateflow:/templateflow \ -B /etc/pki:/etc/pki/ \ -B /PATH/TO/OUTPUT:/OUTPUT \ /PATH/TO/fmriprep-20.2.1lts.sif \ -w /DATA/fmriprep_work \ --participant-label pixar001 \ --bids-filter-file /OUTPUT/bids_filters.json \ --cifti-output 91k \ --use-aroma \ --output-spaces MNI152NLin2009cAsym MNI152NLin6Asym fsaverage5 \ --output-layout bids \ --notrack \ --skip_bids_validation \ --write-graph \ --omp-nthreads 8 \ --nprocs 16 \ --mem_mb 65536 \ --resource-monitor \ /DATA/ds000288 /DATA/ds000288/derivatives/fmriprep participant </code></pre> <p> </p>
Data from: No evidence of foliar disease impact on crop root functional strategies and soil microbial communities: What does this mean for organic coffee?
<p><span>Global climate change is increasing pest and pathogen pressures on plant communities, deteriorating optimal plant functioning. In plant communities, root functional trait expression and microbial communities are important indicators of plant functioning belowground, and, when confronted with pathogens aboveground, can simultaneously reflect plant defence strategies. Yet, while research is continuing to emerge on the response of root functional traits and microbial processes to pathogens aboveground, little work has investigated these interactions in tree-crops, or the role organic amendments play in moderating these relationships. The main objective of this study is to disentangle the dynamic effects of pathogens and amendments on root functional traits (i.e., specific root length and area, root diameter, root length density, root nitrogen, and root carbon to nitrogen ratio) and root endophytic fungal communities. As a model, we use <em>Coffea arabica </em>(coffee) variety Caturra along a gradient of Coffee Leaf Rust – a foliar disease prominent in coffee systems – under contrasting but widespread amendment regimes in biodiverse agroforestry systems. We found that root trait expression varies along established conservation and collaboration gradients, where fungal endophyte community composition varies significantly as a function of root traits. Belowground resource acquisition strategies do not change with foliar disease incidence, suggesting they may be decoupled. Rather, amendment regimes </span>differentially shape root trait expression and microbial communities<span>, where coffee plants under organic amendments, regardless of foliar disease incidence, expressed greater acquisitive traits and enhanced collaboration with symbiotic fungi. </span>This is an important first step in disentangling the dynamic inter-relationships between plant traits, endophytes, and pathogens, generating new questions on the role of amendments in sustainable pathogen management in biodiverse agroecosystems.</p> <p> </p>
Data from: Plant functional types broadly describe water use strategies in the Caatinga, a seasonally dry tropical forest in northeast Brazil
<ol> <li><span>In seasonally dry tropical forests, plant functional type can be classified as deciduous low wood density, deciduous high wood density, or evergreen high wood density species. While deciduousness is often associated with drought-avoidance and low wood density is often associated with tissue water storage, the degree to which these functional types may correspond to diverging and unique water use strategies has not been extensively tested. </span></li> <li><span>We examined (1) tolerance to water stress, measured by pre-dawn and mid-day leaf water potential; (2) water use efficiency, measured via foliar δ<sup>13</sup>C; and (3) access to soil water,<i> </i>measured via stem water δ<sup>18</sup>O.</span></li> <li><span>We found that deciduous low wood density species maintain high leaf water potential and low water use efficiency. Deciduous high wood density species have lower leaf water potential and variable water use efficiency. Both groups rely on shallow soil water. Evergreen high wood density species have low<i> </i>leaf water potential, higher water use efficiency, and access alternative water sources. These findings indicate that deciduous low wood density species are drought avoiders, with a specialized strategy for storing root and stem water. Deciduous high wood density species are moderately drought tolerant, and evergreen high wood density species are the most drought tolerant group. </span></li> <li><span><i>Synthesis. </i>Our results broadly support the plant functional type framework as a way to understand water use strategies, but also highlight species-level differences. </span></li> </ol>
Redescending Potential Function induced Two-edge Selection Strategy for Blind Image Deblurring
<p>Blind Image deblurring problem is undoubtedly a fundamental task in computational imaging and computer vision. Its goal is to extract a clean image without knowledge of the blur kernel from a given blur image.Recently proposed RDP regularizations have shown their effectiveness in deblurring. However, under the prior framework, the physical intuition of RDP regularization cannot be utilized and the advantages of image collaborative smoothing-enhancing (CSE) cannot be achieved well. In this paper, we propose a combination of RDP regularization and edge selection methods to fill this gap. It is motivated by a simple idea that using edge selection allows RDP regularization to work directly on the salient edges of the image which makes it physically more intuitive and producing better results. Both conceptually and experimentally, this transformation has been demonstrated to be true.<br> A large number of experimental results show that the proposed method can obtain the most advanced results on both uniform and non-uniform data sets, even better than some deep learning methods. This method is also worth applying to the direction of deep learning.</p>
A strategy to validate protein function predictions in vitro - accompanying data
<p>This repository contains the ProteinCartography analyses that accompany the pub "<a href="https://doi.org/10.57844/arcadia-cae9-96c4">A strategy to validate protein function predictions <em>in vitro</em></a><a href="https://doi.org/10.57844/arcadia-cae9-96c4">."</a> These proteins were selected from a list of the 200 most studied human proteins in the Protein Data Bank (PDB) which was published in <a href="https://onlinelibrary.wiley.com/doi/10.1002/pro.4038">Liu and Buck, 2021</a>. </p> <p>Each analysis was done using <a href="https://github.com/Arcadia-Science/ProteinCartography/releases/tag/v0.5.0">v0.5.0</a> of ProteinCartography using the standard configuration parameters. Each analysis is in its own zipped file corresponding to the protein name. The zipped files contain inputs, configuration files, all the structures, and all ProteinCartography results. Additionally, for a handful of the proteins, we ran a scaled-up version of ProteinCartography asking for 10,000 hit proteins instead of the standard. These are also included with the file prefix "Scaled-up_". </p> <p>Finally, we've decided to move forward with 2 protein families for validation of our tool, ProteinCartography. These protein families are <a href="https://doi.org/10.57844/arcadia-1e5d-e272">deoxycytidine kinase</a> and <a href="https://doi.org/10.57844/arcadia-74ad-345f">Ras GTPase</a>. For more about these two protein families, visit the mentioned pubs! </p>
Data from: Alternative functional strategies and altered carbon pathways facilitate broad depth ranges in coral-obligate reef fishes
Spatial refuges in peripheral habitats will become increasingly important for species persistence as climate change and other disturbances progressively impact habitat quality and assemblage compositions. However, the capacity for persistence will be determined in part by species‐specific abilities to absorb costs related to altered or decreased quantities and quality of resources at range peripheries. We compared variations in dietary strategies and energy acquisition trade‐offs along depth gradients in two obligate corallivores that differ in level of diet specialization. We also assessed depth‐related changes in energy pathways and energy content of their mixotrophic prey. We found no changes in feeding effort or total resource availability (total coral cover) towards deep range margins, but availability of the preferred resource (Acropora coral) decreased. While both species selectively targeted Acropora, the more specialized species (Chaetodon baronessa) exhibited limited feeding plasticity along the depth gradient. The degree of selectivity towards the preferred coral increased rather than decreased with depth, being 40 times greater than expected, given availability, at their range periphery. In contrast, the generalist's diet (Chaetodon octofasciatus) varied greatly in response to changes in resource availability with depth. Unexpectedly, the energy content of Acropora did not decline with depth, likely due to increased coral heterotrophy in deeper water, indicated by shifts in their molecular isotope geochemistry. This shift was accompanied by a 20% increase in plankton‐sourced carbon in the muscle tissue of deep‐resident fish, despite no observations of direct feeding on plankton food sources. Our results indicate that deep ranges in coral‐obligate reef fishes are supported by multiple mechanisms of trophic versatility in both the fish and corals. This nutritional plasticity likely serves a compensatory role in the resilience and eventual adaptation of organisms at their range peripheries. For species vulnerable to increasing anthropogenic impacts at range cores, variable and multi‐trophic functional responses can act to buffer against costs and increase the refuge potential of range peripheries. Specialist consumers may also be supported indirectly at range margins via trophic plasticity within their preferred prey.
Figure 1 in Functional necrophilia: a profitable anuran reproductive strategy?
Figure 1. Necrophilia in Rhinella proboscidea in a central Amazonian headwater stream. Thousands of eggs (arrow) from a single reproductive event, in a small patch of a headwater stream (A). Two males in a battle for a drowned female. The larger (arrowed) is in amplexus and compressing the female's abdomen with his legs, which resulted in expulsion of the oocytes (B). Male compressing the abdomen of a dead female, which resulted in expulsion of her oocytes (C).
Data Availability for "Function of four tryptophan residues on Cel7A catalytic efficiency: insight into cellulase screening strategy based on natural cellulose or cellulose analogs"
<p><strong>The data support for this article "Function of four tryptophan residues on Cel7A catalytic efficiency: insight into cellulase screening strategy based on natural cellulose or cellulose analogs"</strong></p>
All data support published article "Function of four tryptophan residues on Cel7A catalytic efficiency: insight into cellulase screening strategy based on natural cellulose or cellulose analogs"
<p>There is a high level of conservation of tryptophans within the active site architecture of the cellulase family, whereas the function of the four tryptophans in the catalytic domain of Cel7A is unclear. By mutating four tryptophan residues in the catalytic domain of Cel7A from <em>Penicillium piceum</em> (PpCel7A), the binding affinity between PpCel7A and <em>p-</em>nitrophenol-D-cellobioside (<em>p</em>NPC) was reduced as determined by Michaelis–Menten constants, molecular dynamics simulations, and fluorescence spectroscopy. Furthermore, PpCel7A variants showed a reduced level of cellobiohydrolase activity against cellulose analogs or natural cellulose. Therefore, it could be concluded four tryptophan residues in Cel7A played a critical role in substrate binding. Mutagenesis results indicated that the W390 stacking interactions at the -2 site played an essential role in facilitating substrate distortion to the -1 site. As soon as the function was altered, the mutation would inevitably affect the catalytic activity against the natural substrate. Interestingly, no clear relationship was found between the cellobiohydrolase activity of PpCel7A variants against <em>p</em>NPC and Avicel. <em>p</em>NP contains many electrophilic groups that may result in overestimation of the binding constant between tryptophan residues and <em>p</em>NPC in comparison to the natural substrate. Consequently, screening improved cellulase using cellulose analogs would divert attention from the target direction for lignocellulose biorefinery. Clarifying mechanism of catalytic diversity on the natural cellulose or cellulose analogs may give better insight into cellulase screening and selecting strategy.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.