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Genetic ancestry proportion influences risk of adverse events from tuberculosis treatment in BrazilNARA Subscribed
Tuberculosis (TB) treatment is highly effective, but response to therapy varies by geography and population subgroups. We assessed differences in TB treatment response in a representative and heterogeneous Brazilian population. We estimated genetic ancestry according to major genetic ancestry groups (African, European, and Amerindian) in the Regional Prospective Observational Research in Tuberculosis (RePORT)-Brazil cohort usi...
This study evaluated the effects of providing 3–15 kg of a soluble and biodegradable biopolymer-based enrichment material (blend of biodegradable polymers and natural fibers) to prepartum sows housed in farrowing crates. Fifteen sows were blocked by body weight and backfat thickness and assigned to three treatments: no enrichment material (CONT), 3 kg of enrichment material (BN3), or 15 kg of enrichment material with added nut...
Histochemical and histometrical changes induced by the rust fungi Kuehneola uredinis in distinct blackberry (Rubus spp.) cultivarsNARA Subscribed
Pathogenic fungi that cause rust adversely affect plants, including crops, affecting them differentially depending on the cultivar. This is the case of blackberry ( Rubus spp.), a member of Rosaceae, introduced in Brazil by Embrapa during the 1980s and 1990s. Given the advantageous nutritional properties of its fruits and the relatively low management costs associated with its cultivation, blackberry production has emerged as...
Aim We evaluated how native vegetation cover influences the diversity of arachnid assemblages across multiple spatial scales in major Brazilian ecosystems. Location Brazil (Amazon and Atlantic rainforests, Cerrado savanna and Caatinga dry forest). Taxon Arachnida (Opiliones, Pseudoscorpiones and Scorpiones). Methods We sampled arachnids at 120 sites using active search and litter sifting. Native vegetation cover was quantified...
In its early years, the UN Decade on Ecosystem Restoration has mobilized unprecedented global commitments. Yet, measuring restoration success remains contested, particularly in megadiverse countries where the absence of standardized indicators and assessment protocols often leads to subjective decisions by environmental agencies. Here, we present a core set of leading indicators developed through a pioneering Brazil-led scienc...
Aim We investigate the distribution of dispersal modes — endozoochory (via animal ingestion), synzoochory (via animal seed accumulation) and anemochory (via wind)—and seed mass of woody plants across Brazilian ecosystems, testing whether their relative abundance in local plant communities could be predicted by climate, edaphic factors and dispersal agents (e.g., the main vectors moving seeds). We expected climate to be the mai...
Global patterns and regional insights into kelp forest protection, restoration, and stewardshipNARA Subscribed
Kelp forests are among the most extensive and productive coastal ecosystems, yet they remain underrepresented in global conservation policy despite widespread declines driven by interacting global- (i.e., ocean warming, marine heatwaves) to local-scale stressors. At the same time, kelp conservation and restoration efforts are expanding rapidly across regions, but measures of success and syntheses tend to primarily focus on eco...
Revealing the phylogeography of Astyanax lacustris: insights from the São Francisco River cladeNARA Subscribed
The genus Astyanax is highly diverse within the family Acestrorhamphidae, and species identification remains challenging due to overlapping morphological, morphometric, meristic, and coloration traits. As a result, several taxa have been considered as species complexes or treated as synonyms. Molecular and cytogenetic approaches are essential for clarifying taxonomic boundaries and assessing potential genetic divergence among...
Subgroup-Specific Associations of GRIA Genes Encoding AMPA Glutamate Receptor Subunits with Patient Survival in MedulloblastomaNARA Subscribed
Brain cancers hijack biological systems involved in neural development and synaptic plasticity. Medulloblastoma (MB), the most common malignant brain tumor in children, is thought to arise from disruptions in neurodevelopmental programs. Glutamatergic transmission mediated by α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors (AMPARs) has been implicated in synaptic communication between adult brain tumors a...
Quaternary tufa carbonates from Brazil’s Potiguar Basin provide unique insights into the interplay of biogenic, hydrological, and climatic factors driving continental carbonate precipitation in tropical low-energy environments. This study systematically characterizes the depositional, taphonomic, and diagenetic features of the tufa deposits resulting from the dissolution of rocks from the Formação Jandaíra that overlie the lit...
Long-term soil health and microbiome responses to sustainable management under drought stress in tropical coffee agroecosystemsNARA Subscribed
Background and aims Implementing sustainable crop management to improve soil health can bolster plant and soil resistance to drought stress. This study evaluated the long-term impact of sustainable soil management on soil health in tropical coffee agroecosystems, focusing on how these practices influenced plant yield and quality, as well as soil microbiome composition and function under drought treatment. Methods Plots were se...
Grazing intensity and seasonality regulate N cycling via litter and excreta in tropical grass–legume pasturesNARA Subscribed
Integrating forage legumes into grasslands reduces the need for N fertilization, but its effectiveness depends on grazing management. This 2 years study evaluated N cycling in Urochloa brizantha and Arachis pintoi pasture under severe (10 cm stubble height), moderate (15 cm stubble height), and light (20 cm stubble height) grazing intensities. Nitrogen cycling from litter and livestock excreta were assessed. Moderate grazing d...
Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species by assessing the vulnerability of 256 marine megafauna species to 23 at‐sea threat...