keyword
https://read.qxmd.com/read/38531497/impact-of-airborne-iron-oxide-nanoparticles-on-tillandsia-usneoides-as-a-model-plant-to-assess-pollution-in-heavy-traffic-areas
#21
JOURNAL ARTICLE
Sara Falsini, Ilaria Colzi, Marco Dainelli, Elia Parigi, Maria Cristina Salvatici, Alessio Papini, Delphine Talbot, Ali Abou-Hassan, Cristina Gonnelli, Sandra Ristori
Due to the increasing evidence of widespread sub-micron pollutants in the atmosphere, the impact of airborne nanoparticles is a subject of great relevance. In particular, the smallest particles are considered the most active and dangerous, having a higher surface/volume ratio. Here we tested the effect of iron oxide (Fe3 O4 ) nanoparticles (IONPs) with different mean diameter and size distribution on the model plant Tillandsia usneoides. Strands were placed in home-built closed boxes and exposed to levels of airborne IONPs reported for the roadside air, i...
March 24, 2024: Chemosphere
https://read.qxmd.com/read/38531490/rational-construction-of-synthetic-consortia-key-considerations-and-model-based-methods-for-guiding-the-development-of-a-novel-biosynthesis-platform
#22
REVIEW
Yu Liu, Boyuan Xue, Hao Liu, Shaojie Wang, Haijia Su
The rapid development of synthetic biology has significantly improved the capabilities of mono-culture systems in converting different substrates into various value-added bio-chemicals through metabolic engineering. However, overexpression of biosynthetic pathways in recombinant strains can impose a heavy metabolic burden on the host, resulting in imbalanced energy distribution and negatively affecting both cell growth and biosynthesis capacity. Synthetic consortia, consisting of two or more microbial species or strains with complementary functions, have emerged as a promising and efficient platform to alleviate the metabolic burden and increase product yield...
March 24, 2024: Biotechnology Advances
https://read.qxmd.com/read/38531309/ecological-niche-modelling
#23
JOURNAL ARTICLE
Wilfried Thuiller
One of the central research questions in ecology and biogeography revolves around understanding the spatial distribution patterns of organisms, the factors influencing species abundance, and why in certain areas there are more species or individuals than in others. Addressing these questions not only forms the bedrock of scientific research in ecology and evolution but also has critical implications for biodiversity conservation and management. To safeguard species, restore habitats, prevent invasions and anticipate future impacts, it is imperative to identify optimal areas for species or biodiversity under current and future conditions, such as changes in climate or land use...
March 25, 2024: Current Biology: CB
https://read.qxmd.com/read/38530816/corythauma-ayyari-insecta-heteroptera-tingidae-depends-on-its-host-plant-to-spread-in-europe
#24
JOURNAL ARTICLE
Manon Durand, Eric Guilbert
Biological invasions increase with the intensity of globalization, human activities, and climate change. Insects represent a high potential of invasive species due to their adaptability to new environment. We analysed here the potential of an Asian phytophagous bug, Corythauma ayyari (Heteroptera, Tingidae) to become widespread, recently recorded in Europe, and that depends on Jasminum spp., an ornamental plant widespread in Europe. We modelled its current distribution, projected it into the future and tested its niche overlap between native and invaded areas...
2024: PloS One
https://read.qxmd.com/read/38529896/evolution-of-the-ecological-niche-behind-the-largest-disjunct-freshwater-fish-distribution-in-the-world
#25
JOURNAL ARTICLE
Rodrigo Ramírez-Álvarez, Townsend A Peterson, Sergio Contreras, Konrad Górski
Ecological processes that are behind distributions of species that inhabit isolated localities, complex disjunct distributions, remain poorly understood. Traditionally, vicariance and dispersion have been proposed as explanatory mechanisms that drive such distributions. However, to date, our understanding of the ecological processes driving evolution of ecological niches associated with disjunct distributions remains rudimentary. Here, we propose a framework to deconstruct drivers of such distribution using World's most widespread freshwater fish Galaxias maculatus as a model and integrating marine and freshwater environments where its life cycle may occur...
March 26, 2024: Journal of Animal Ecology
https://read.qxmd.com/read/38529306/recent-genetic-phenetic-and-ecological-divergence-across-the-mesoamerican-highlands-a-study-case-with-diglossa-baritula-aves-thraupidae
#26
JOURNAL ARTICLE
Alondra K Terrones-Ramírez, Sahid M Robles-Bello, Melisa Vázquez-López, Sandra M Ramírez-Barrera, Luz E Zamudio-Beltrán, Anuar López López, Maria Del Coro Arizmendi, Ana Paula Durán-Suárez Del Real, Luis E Eguiarte, Blanca E Hernández-Baños
The topographical, geological, climatic and biodiversity complexity of Mesoamerica has made it a primary research focus. The Mesoamerican highlands is a region with particularly high species richness and within-species variation. The Cinnamon-bellied Flowerpiercer, Diglossa baritula (Wagler, 1832), is a species endemic to the Mesoamerican highlands, with three allopatric subspecies currently recognized. To characterize divergence within this species, we integrated genomics, morphology, coloration and ecological niche modeling approaches, obtained from sampling individuals across the entire geographic distribution of the species...
2024: PeerJ
https://read.qxmd.com/read/38528343/where-the-small-things-are-modelling-edge-effects-on-mouse-lemur-population-density-and-distribution-in-northwestern-madagascar
#27
JOURNAL ARTICLE
Fernando Mercado Malabet, Malcolm Ramsay, Coral Chell, Bertrand Andriatsitohaina, Ute Radespiel, Shawn Lehman
Edge effects result from the penetration to varying depths and intensities, of abiotic and biotic conditions from the surrounding non-forest matrix into the forest interior. Although 70% of the world's forests are within 1 km of a forest edge, making edge effects a dominant feature of most forest habitats, there are few empirical data on inter-site differences in edge responses in primates. We used spatially explicit capture-recapture (SECR) models to determine spatial patterns of density for two species of mouse lemurs (Microcebus murinus and Microcebus ravelobensis) in two forest landscapes in northwestern Madagascar...
March 25, 2024: American Journal of Primatology
https://read.qxmd.com/read/38525956/nutrient-supplementation-induced-metabolic-profile-changes-and-early-appearance-of-free-n-glycans-in-nutrient-deficient-tomato-plants-revealed-by-mass-spectrometry
#28
JOURNAL ARTICLE
Marjan Dolatmoradi, Zsolt Sándor, Imre Vágó, Daniel A Lowy, Akos Vertes, Ida Kincses
Inorganic fertilizers are routinely used in large scale crop production for the supplementation of nitrogen, phosphorus, and potassium in nutrient poor soil. To explore metabolic changes in tomato plants grown on humic sand under different nutritional conditions, matrix-assisted laser desorption ionization (MALDI) mass spectrometry was utilized for the analysis of xylem sap. Variations in the abundances of metabolites and oligosaccharides, including free N -glycans (FNGs), were determined. Statistical analysis of the sample-related peaks revealed significant differences in the abundance ratios of multiple metabolites, including oligosaccharides, between the control plants, grown with no fertilizers, and plants raised under "ideal" and "nitrogen deficient" nutritional conditions, i...
March 25, 2024: Analyst
https://read.qxmd.com/read/38525284/-foveavelia-a-new-south-american-genus-of-veliinae-hemiptera-heteroptera-veliidae
#29
JOURNAL ARTICLE
Higor D D Rodrigues, Felipe F F Moreira
BACKGROUND: Semiaquatic bugs (Hemiptera: Heteroptera: Gerromorpha) are distributed worldwide and play fundamental roles in limnic ecosystems. They are the most successful group of organisms to occupy the air-water interface, are important models to study ecology and evolution, and can be relevant tools in biomonitoring. Veliidae is the second most speciose family of semiaquatic bugs, but its internal classification, including subfamilies and genera, is artificial and based on symplesiomorphies...
2024: PeerJ
https://read.qxmd.com/read/38525243/impact-of-persistent-barrier-to-gene-flow-and-catastrophic-events-on-red-algae-evolutionary-history-along-the-chilean-coast
#30
JOURNAL ARTICLE
Oscar R Huanel, Alejandro E Montecinos, Francisco Sepúlveda-Espinoza, Marie-Laure Guillemin
Historical vicariance events, linked to the existence of stable physical barriers to gene flow, generate concordant genetic breaks in co-distributed species while stochastic processes (e.g., costal uplift) could cause species-specific genetic breaks as a result of local strong demographic bottlenecks or extinction. In Chile, previous studies show that the area of the 30°S-33°S could correspond to a stable barrier to gene flow that have affected the genetic structure of various algae and marine invertebrates...
2024: Frontiers in Genetics
https://read.qxmd.com/read/38522635/pedf-derived-peptide-protects-against-amyloid-%C3%AE-toxicity-in-vitro-and-prevents-retinal-dysfunction-in-rats
#31
JOURNAL ARTICLE
Amanda Qarawani, Efrat Naaman, Rony Ben- Tzvi Elimelech, Michal Harel, Chen Itzkovich, Shadi Safuri, Nitsan Dahan, Jack Henkin, Shiri Soudry
Amyloid-beta (Aβ), a family of aggregation-prone and neurotoxic peptides, has been implicated in the pathophysiology of age-related macular degeneration (AMD). We have previously shown that oligomeric and fibrillar species of Aβ42 exerted retinal toxicity in rats, but while the consequences of exposure to amyloid were related to intracellular effects, the mechanism of Aβ42 internalization in the retina is not well characterized. In the brain, the 67 kDa laminin receptor (67LR) participates in Aβ-related neuronal cell death...
March 22, 2024: Experimental Eye Research
https://read.qxmd.com/read/38522121/physicochemical-variables-influencing-the-abundance-of-atlantic-goliath-grouper-juveniles-epinephelus-itajara-in-a-tropical-brazilian-mangrove-habitat
#32
JOURNAL ARTICLE
Mario V Condini, Rafael L Oliveira, Lorena L Almeida, Ester F Barbosa, Ana C Martins, Áthila A Bertoncini, Maurício Hostim-Silva
The purpose of this study was to investigate the relationships between the abundance and occurrence of juvenile Atlantic goliath grouper and physicochemical variables in a tropical mangrove ecosystem, employing a non-lethal methodology. Juvenile Atlantic goliath grouper individuals were captured biweekly, using blue crab traps, across three locations within the São Mateus estuary (18°36'S, 39°44'W), from August 2021 to July 2022. Simultaneously, the physicochemical water variables were assessed during each trap inspection...
March 20, 2024: Marine Environmental Research
https://read.qxmd.com/read/38521800/geographic-differences-in-body-size-distributions-underlie-food-web-connectance-of-tropical-forest-mammals
#33
JOURNAL ARTICLE
Lydia Beaudrot, Miguel A Acevedo, Daniel Gorczynski, Nyeema C Harris
Understanding variation in food web structure over large spatial scales is an emerging research agenda in food web ecology. The density of predator-prey links in a food web (i.e., connectance) is a key measure of network complexity that describes the mean proportional dietary breadth of species within a food web. Connectance is a critical component of food web robustness to species loss: food webs with lower connectance have been shown to be more susceptible to secondary extinctions. Identifying geographic variation in food web connectance and its drivers may provide insight into community robustness to species loss...
March 23, 2024: Scientific Reports
https://read.qxmd.com/read/38521263/alpine-rhododendron-population-contractions-lead-to-spatial-distribution-mismatch-with-their-pollinators-under-climate-change
#34
JOURNAL ARTICLE
Kun-Ji Li, Xiao-Fei Liu, Liu Yang, Shi-Kang Shen
The effect of global climate change on plant-pollinator interaction is not limited to changes in phenology and richness within communities but also includes the spatial mismatch caused by the inconsistency of geographical distribution changes. Subsequently, the pollinator interaction network may be remodeled or even disrupted. In this study, we simulated the suitable habitat niche of 15 Rhododendron species and their eight pollinator species as well as their overlapping versus geographical mismatch under the current and three future climate change scenarios in 2090s, using MaxEnt...
March 21, 2024: Science of the Total Environment
https://read.qxmd.com/read/38520558/predicting-future-climate-change-impacts-on-the-potential-distribution-of-the-black-howler-monkey-alouatta-pigra-an-endangered-arboreal-primate
#35
JOURNAL ARTICLE
Antonio Acini Vásquez-Aguilar, Dolores Hernández-Rodríguez, Rodolfo Martínez-Mota
Climate change is one of the main factors affecting biodiversity worldwide at an alarming rate. In addition to increases in global extreme weather events, melting of polar ice caps, and subsequent sea level rise, climate change might shift the geographic distribution of species. In recent years, interest in understanding the effects of climate change on species distribution has increased, including species which depend greatly on forest cover for survival, such as strictly arboreal primates. Here, we generate a series of species distribution models (SDMs) to evaluate future projections under different climate change scenarios on the distribution of the black howler monkey (Alouatta pigra), an endemic endangered primate species...
March 23, 2024: Environmental Monitoring and Assessment
https://read.qxmd.com/read/38520022/carbon-quantum-dots-of-ginsenoside-rb1-for-application-in-a-mouse-model-of-intracerebral-hemorrhage
#36
JOURNAL ARTICLE
Xiaolong Tang, Xinyu Yang, Yamei Yu, Miaojing Wu, Yuanyuan Li, Zhe Zhang, Guangyu Jia, Qi Wang, Wei Tu, Ye Wang, Xingen Zhu, Shiyong Li
After intracerebral hemorrhage (ICH) occurs, the overproduction of reactive oxygen species (ROS) and iron ion overload are the leading causes of secondary damage. Removing excess iron ions and ROS in the meningeal system can effectively alleviate the secondary damage after ICH. This study synthesized ginsenoside Rb1 carbon quantum dots (RBCQDs) using ginsenoside Rb1 and ethylenediamine via a hydrothermal method. RBCQDs exhibit potent capabilities in scavenging ABTS + free radicals and iron ions in solution...
March 22, 2024: Journal of Nanobiotechnology
https://read.qxmd.com/read/38519760/diversity-distribution-and-bioprospecting-potentials-of-carotenogenic-yeast-from-mangrove-ecosystem
#37
JOURNAL ARTICLE
K A Nimsi, K Manjusha, M N Farzana
Microbial production of carotenoids has gained significant interest for its cost-effectiveness and sustainable nature. This study focuses on 47 red-pigmented yeasts isolated from sediments and plant parts of 13 species of mangrove trees. The relative abundance and distribution of these yeasts varied with plant species and plant parts. The highest number of red yeasts was associated with the mangrove plant Avicennia officinalis (32%). Notably, the leaves harbored the highest percentage (45%) of carotenogenic yeasts, and definite compartmentalization of these yeast species was noticed in mangrove plant parts...
March 22, 2024: Archives of Microbiology
https://read.qxmd.com/read/38518981/rnairport-a-deep-neural-network-based-database-characterizing-representative-gene-models-in-plants
#38
JOURNAL ARTICLE
Sitao Zhu, Shu Yuan, Ruixia Niu, Yulu Zhou, Zhao Wang, Guoyong Xu
A 5'-leader, known initially as the 5'-untranslated region, contains multiple isoforms due to alternative splicings (aS) and transcription start sites (aTSS). Therefore, a representative 5'-leader is demanded to examine the embedded RNA regulatory elements in controlling translation efficiency. Here, we develop a ranking algorithm and a deep-learning model to annotate representative 5'-leaders for five plant species. We rank the intra- and inter-sample frequency of aS-mediated transcript isoforms using the Kruskal-Wallis test-based algorithm and identify the representative aS-5'-leader...
March 20, 2024: Journal of Genetics and Genomics
https://read.qxmd.com/read/38518828/dispersal-and-interbreeding-as-survival-strategies-for-species-exposed-to-environment-change
#39
JOURNAL ARTICLE
Kelvin J Richards, Axel Timmermann
The success of individual species under a change to the environment is dependent on a number of factors, which include the changes to habitat, competition with other species and adaptability. Here we investigate the impact of differing dispersal characteristics of two competing species responding to the change using an idealized spatio-temporal model. The rate of dispersion is given by a combination of the growth term and the form of the diffusion term, which is set to give either normal diffusion or anomalous (super) diffusion...
March 20, 2024: Journal of Theoretical Biology
https://read.qxmd.com/read/38517868/spatio-temporal-patterns-of-whiting-merlangius-merlangus-in-the-adriatic-sea-under-environmental-forcing
#40
JOURNAL ARTICLE
Emanuele Asciutto, Federico Maioli, Chiara Manfredi, Alessandra Anibaldi, Jacopo Cimini, Igor Isailović, Bojan Marčeta, Michele Casini
Understanding how environmental factors affect species distribution is crucial for the conservation and management of marine organisms, especially in the face of global changes. Whiting (Merlangius merlangus) is a demersal cold-temperate fish, considered a 'relict species' in the Adriatic Sea. Despite its significance to commercial fisheries in the region, the specific drivers behind its spatial and temporal patterns have not been thoroughly examined. Here, we fitted a set of Generalized Linear Mixed Effects Models to data collected in the Northern and Central Adriatic from 1999 to 2019 during the Mediterranean International Trawl Survey to investigate the potential influence of depth, seafloor temperature and seafloor dissolved oxygen on the annual biomass density and spatial distribution of whiting in the spring-summer season...
2024: PloS One
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