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38 results for “primary producers”
Amino acid d13C dataset for nearshore marine primary producers
<p>Carbon isotope fingerprinting, or multivariate analysis using <em>δ</em><sup>13</sup>C values of individual compounds, is a powerful tool in ecological studies, particularly measurements of essential amino acids (EAA <em>δ</em><sup>13</sup>C). Despite the widespread application of this technique, there has been little methodological validation to determine (1) whether multivariate EAA <em>δ</em><sup>13</sup>C signatures (fingerprints) of primary producer groups vary across space and time, and (2) what biochemical mechanisms drive these patterns.</p> <p>Here, we evaluate the spatiotemporal consistency in EAA <em>δ</em><sup>13</sup>C fingerprints among nearshore primary producers: Chlorophyta (<em>Ulva</em> sp.), Ochrophyta (kelps), particulate organic matter (POM) and phytoplankton, and Rhodophyta. We analyzed 135 samples from 14 genera collected in Alaska, California, and Chile. The collections included historical museum samples (1896-1980 CE) of the giant kelp, <em>Macrocystis pyrifera</em>. We employed canonical analysis of principal coordinates and generalized linear models (GLMs) to respectively characterize isotopic fingerprints and evaluate the effect of taxonomy, local upwelling regimes, ecological setting, and time on individual EAA <em>δ</em><sup>13</sup>C values and associated fingerprints. We also calculated amino acid discrimination values (<em>D</em><sup>13</sup>C) to identify key biochemical pathways responsible for these patterns.</p> <p>We found remarkable consistency in EAA <em>δ</em><sup>13</sup>C fingerprints of marine algae across space and through time. Kelps and rhodophytes exhibited statistically distinct multivariate isotopic patterns regardless of geographic location, species identity, or time (kelps). In contrast, isotopic fingerprints of POM/phytoplankton and <em>Ulva</em> overlapped substantially. GLMs indicated that producer family, presumably due to the presence/absence of carbon concentrating mechanisms, and site locality are important determinants of individual amino acid <em>δ</em><sup>13</sup>C values. Taxonomy was also a key variable for EAA <em>δ</em><sup>13</sup>C fingerprints. The calculated discrimination values suggest variation in (1) metabolism of pyruvate and oxaloacetate-derived amino acids, and (2) production of storage and structural carbohydrates, are responsible for taxonomic differences in isotopic fingerprints. </p> <p>We conclude EAA <em>δ</em><sup>13</sup>C fingerprinting is a robust method for tracing the contribution of diverse primary producer taxa to coastal food webs. We show that this technique can be applied to modern and historical samples, as well as consumers collected across continental scales. The high fidelity of EAA <em>δ</em><sup>13</sup>C multivariate patterns coupled with biochemical mechanisms provides a powerful framework for future studies of carbon flow across broad biogeographical and ecological contexts.</p>
FIGURE. Blades of C. spongifolia. A. Sub-marginal and marginal collective veins, with laminal tissue (2–4 mm) between. B. Marginal collective veins fused below shallow sinus. C. Underside with spongy appearance produced by "false pores"; and thick, rubbery texture indicated by axial wrinkles formed in crease. D. Underside showing primary vein and pinnate lateral veins surrounded by spongy tissue. E. Sub-stomatal cavities revealed by transmitted light (scale unit 0.25 mm), F. Sub-stomatal cavities revealed by removing lower epidermis (A–D: Mengla County, 2018. E–F: Bach Ma NP seedling, ex situ). Photos: PJM. in Colocasia spongifolia sp. nov. (Araceae) in southern China and central Vietnam
FIGURE. Blades of C. spongifolia. A. Sub-marginal and marginal collective veins, with laminal tissue (2–4 mm) between. B. Marginal collective veins fused below shallow sinus. C. Underside with spongy appearance produced by "false pores"; and thick, rubbery texture indicated by axial wrinkles formed in crease. D. Underside showing primary vein and pinnate lateral veins surrounded by spongy tissue. E. Sub-stomatal cavities revealed by transmitted light (scale unit 0.25 mm), F. Sub-stomatal cavities revealed by removing lower epidermis (A–D: Mengla County, 2018. E–F: Bach Ma NP seedling, ex situ). Photos: PJM.
Data from: Exploring the impact of multidecadal environmental changes on the population genetic structure of a marine primary producer
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Differential impacts of alternate primary producers on carbon cycling
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Amino acid d13C dataset for nearshore marine primary producers
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Primary Aldosteronism: Spatial Multiomics Mapping of Genotype-Dependent Heterogeneity and Tumor Expansion of Aldosterone-Producing Adenomas
GEO Series GSE274314. Homo sapiens. 14 samples. Type: Other.
Newly identified AP2-ERF transcription factors produce thickened primary cell wall in fiber cells of nst1 nst3 double mutant in Arabidopsis
GEO Series GSE81039. Arabidopsis thaliana. 8 samples. Type: Expression profiling by array.
ATAC-seq of the following human primary CD4 T cell subsets: GM-CSF producing, GM-CSF negative, bulk, memory and naive CD4 T cells.
GEO Series GSE119731. Homo sapiens. 83 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Integration of transcriptome and methylome analyses to dissect molecular pathogenesis of primary aldosteronism: comparision between aldosterone-producing adenomas and adjacent adrenal glands
GEO Series GSE60044. Homo sapiens. 28 samples. Type: Expression profiling by array; Methylation profiling by genome tiling array.
Somatic mutations in SLC30A1 lead to aldosterone-producing adenomas and primary aldosteronism
GEO Series GSE236437. Homo sapiens. 12 samples. Type: Expression profiling by high throughput sequencing.
mRNA-seq of the following human primary CD4 T cell subsets: GM-CSF producing, GM-CSF negative, bulk, memory and naive CD4 T cells.
GEO Series GSE119732. Homo sapiens. 29 samples. Type: Expression profiling by high throughput sequencing.
Integration of transcriptome and methylome analyses to dissect molecular pathogenesis of primary aldosteronism: comparision between aldosterone-producing adenomas and adjacent adrenal glands [methylom
GEO Series GSE60043. Homo sapiens. 14 samples. Type: Methylation profiling by genome tiling array.
The key regulation of LncRNA MALAT1/miR-124-3p/PI3K axis during reprogramming of primary mouse hepatocytes into insulin-producing cells
GEO Series GSE269392. Mus musculus. 4 samples. Type: Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing.
Danshen-Jiang-Fu Granule Prepared by Danshen From Different Producing Areas for Primary Dysmenorrhea
ClinicalTrials.gov study NCT02602522. IPD Sharing: Not stated. Countries: 1. Publications: 0.
miRNA expression in plasma samples from Non-functional adenoma (NFA), Cortisol-producing adneoma (CPA)and primary bilateral macronodular adrenal hyperplasia (PBMAH)
GEO Series GSE220070. Homo sapiens. 14 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Data from: The influence of herbivores on primary producers can vary spatially and interact with disturbance
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Integration of transcriptome and methylome analyses to dissect molecular pathogenesis of primary aldosteronism: comparision between aldosterone-producing adenomas and adjacent adrenal glands [transcri
GEO Series GSE60042. Homo sapiens. 14 samples. Type: Expression profiling by array.
ATAC-seq and mRNA-seq of the following human primary CD4 T cell subsets: GM-CSF producing, GM-CSF negative, bulk, memory and naive CD4 T cells.
GEO Series GSE119734. Homo sapiens. 112 samples. Type: Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing.
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Allen Brain Atlas
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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.