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3,682 results for “ROOTS”
Microplastic additions modulate intraspecific variability in root traits and mycorrhizal responses across root-life history strategies
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Dataset for: The barrier to radial oxygen loss protects roots against hydrogen sulphide intrusion and its toxic effect
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Accounting for environmental variation in co‐occurrence modelling reveals the importance of positive interactions in root‐associated fungal communities
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Data from: The effect of drainage on the fine root biomass, production, and turnover in hemiboreal old-growth forests on organic soils
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Acer and Quercus root traits plasticity
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Unraveling the clonal trait space: Beyond aboveground and fine-root traits
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Aging and injury drive neuronal senescence in the dorsal root ganglia
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Data from: Root responses to elevated CO2, warming, and irrigation in a semi-arid grassland: integrating biomass, length, and life span in a 5‐year field experiment
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Clockor2: Inferring global and local strict molecular clocks using root-to-tip regression
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Deciphering the interactions between plant species and their main fungal root pathogens in mixed grassland communities
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Expanding the plant economics spectrum with root nitrogen reallocation
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Conflict over the eukaryote root resides in strong outliers, mosaics and missing data sensitivity of site-specific (CAT) mixture models
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Data from: Plant diversity loss has limited effects on belowground biomass and traits but alters community short-term root production in a species-rich grassland
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Data from: Frog limbs in deep time: is jumping locomotion at the roots of the anuran Bauplan?
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Spatial structure within root systems moderates stability of Arbuscular Mycorrhizal mutualism and plant-soil feedbacks
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Dataset: Method and timing of rhizobacteria inoculation to plant roots alters success and strength of aphid suppression
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Fungal community composition and genetic potential regulate fine root decay in northern temperate forests
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Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha-1 yr-1; regional background levels <2 kg N ha-1 yr-1. Bogs, being ombrotrophic, may be especially susceptible to increasing N deposition. To examine responses to N deposition, over five years, we experimentally applied N (as NH4NO3) to a bog near Mariana Lakes, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha-1 yr-1, plus controls (no water or N addition). From 2014-2015, we examined the effects of N addition on root production and nitrogen assimilation in those roots by measuring root biomass at two depths and root production over one and two years. Root biomass in the 0-15 cm and 15-30 cm depth increments in peat increased with increasing N input; the response was similar in the two depth increments. Root production integrated over the top 30 cm of peat increased with increasing N input at a rate of 5.3 g m-2 yr-1 with an increase in N input of 1 kg N ha-1 yr-1. Water addition alone had no significant effect on root biomass (p > 0.72) or root production. Given the rather consistent finding increasing N deposition stimulates aboveground vascular plant biomass and production, and our results that root biomass and production at Mariana Lakes Bog are stimulated as well, further work on belowground responses seems warranted.
Microbial decomposition of 13-C labeled substrates across a gradient of root density, Marcell Experimental Forest, Minnesota, USA, 2014
Roots influence microbial decomposition of organic matter. We investigated how roots influence decomposition of a simple and complex carbon (C) substrate in mesocosms in a field experiment. Mesocosms were PVC lined with mesh that varied in size, which manipulated root access to soil and produced a gradient of root density. Mesocosms either received an injection of water (control), 13C labeled starch or 13C labeled leaf material. We collected gas samples from the mesocosms and analyzed 13C-CO2, microbial biomass, and enzyme activity. Our empirical data set was compared to a rhizosphere simulation model, CORPSE, to evaluate two alternative model hypotheses: 1) microbes are generalist decomposers, and 2) microbes have different affinities for substrates and may be influenced by roots differently. Our field experiment was conducted in 2014 at Marcell Experimental Forest, MN, USA. We installed mesocosms in May and after six weeks we injected water or substrates into soil. Gas samples were collected 1, 2, 3, 4, 5, 10, 20, and 40 days after injections. Mesocosms that received the starch substrate were harvested from the field 5 days after injections and those receiving leaf material were harvested 40 days after injections. Half of the water-control mesocosm were harvested 5 and 40 days after injections to pair with the substrate mesocosm harvests. Our results suggested decomposition of leaf material was more sensitive to root density than starch. The CORPSE model simulations with microbe-substrate affinity (hypothesis 2) showed a similar pattern to the field experiment. One way that roots influence microbial decomposition is through alleviating C limitation via exudates. Overall, our results suggest that microbial decomposition of starch is not a C limited process and that root density does not alter the rate of starch decomposition. On the other hand, decomposition of more complex substrates such as leaf tissue, which contains cellulose, hemi cellulose, and lignin, may be
Vascular Root Biomass and Production at Two Depths in an Alberta Poor Fen Subjected to Increasing Nitrogen Deposition, 2014-2015
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha-1 yr-1; regional background levels <2 kg N ha-1 yr-1. To examine responses to N deposition, over five years, we experimentally applied N (as NH4NO3) to a poor fen near Mariana Lake, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha-1 yr-1, plus controls (no water or N addition). From 2014-2015, we examined the effects of N addition on root production by measuring root biomass at two depths and root production over one and two years. Root biomass, measured in 2014, increased with increasing N addition in the 0-15 and 15-30 cm depth increments. Root production increased with increasing N addition in the 0-15 cm, but not the 15-30 cm depth increment; annual root production in the 0-15 cm depth increment was higher when ingrowth bags remained in the peat for two growing seasons, compared to first-year root production. As a result, over the top 30 cm, annual root production was greater when ingrowth bags were in the peat for two growing seasons. We expected a threshold N addition level associated with stimulation of root production but found no evidence of such a threshold at Mariana Lake Poor Fen. Given the rather consistent finding increasing N deposition stimulates aboveground vascular plant biomass and production, and our results that root biomass and production at Mariana Lakes Bog are stimulated as well, further work on belowground responses seems warranted.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.