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Sökning: LAR1:gu > Forskningsöversikt > Sveriges Lantbruksuniversitet

  • Resultat 1-8 av 8
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1.
  • Gunnarsson, Bengt, 1954, et al. (författare)
  • Biophilia revisited: nature versus nurture
  • 2023
  • Ingår i: Trends in Ecology & Evolution. - 0169-5347 .- 1872-8383. ; 38:9, s. 792-4
  • Forskningsöversikt (refereegranskat)abstract
    • The “Biophilia” hypothesis highlighting humans´ innate, positive response to nature is both increasingly accepted and questioned. Studies support an updated Biophilia. The interplay between inheritance and environment, including culture, governs an individual´s response, from positive to negative. Variety in urban green spaces is needed to optimise benefits to all residents.
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2.
  • Hansson, Elisabeth, 1955, et al. (författare)
  • Coupled cell networks are target cells of inflammation, which can spread between different body organs and develop into systemic chronic inflammation
  • 2015
  • Ingår i: Journal of Inflammation-London. - : Springer Science and Business Media LLC. - 1476-9255. ; 12
  • Forskningsöversikt (refereegranskat)abstract
    • Several organs in the body comprise cells coupled into networks. These cells have in common that they are excitable but do not express action potentials. Furthermore, they are equipped with Ca2+ signaling systems, which can be intercellular and/or extracellular. The transport of small molecules between the cells occurs through gap junctions comprising connexin 43. Examples of cells coupled into networks include astrocytes, keratinocytes, chondrocytes, synovial fibroblasts, osteoblasts, connective tissue cells, cardiac and corneal fibroblasts, myofibroblasts, hepatocytes, and different types of glandular cells. These cells are targets for inflammation, which can be initiated after injury or in disease. If the inflammation reaches the CNS, it develops into neuroinflammation and can be of importance in the development of systemic chronic inflammation, which can manifest as pain and result in changes in the expression and structure of cellular components. Biochemical parameters of importance for cellular functions are described in this review.
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3.
  • Lindahl, Björn, et al. (författare)
  • Fungal community analysis by high-throughput sequencing of amplified markers – a user's guide
  • 2013
  • Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 199:1, s. 288-299
  • Forskningsöversikt (refereegranskat)abstract
    • * Novel high-throughput sequencing methods outperform earlier approaches in terms of resolution and magnitude. They enable identification and relative quantification of community members and offer new insights into fungal community ecology. These methods are currently taking over as the primary tool to assess fungal communities of plant-associated endophytes, pathogens, and mycorrhizal symbionts, as well as free-living saprotrophs. * Taking advantage of the collective experience of six research groups, we here review the different stages involved in fungal community analysis, from field sampling via laboratory procedures to bioinformatics and data interpretation. We discuss potential pitfalls, alternatives, and solutions. * Highlighted topics are challenges involved in: obtaining representative DNA/RNA samples and replicates that encompass the targeted variation in community composition, selection of marker regions and primers, options for amplification and multiplexing, handling of sequencing errors, and taxonomic identification. * Without awareness of methodological biases, limitations of markers, and bioinformatics challenges, large-scale sequencing projects risk yielding artificial results and misleading conclusions.
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4.
  • Linders, Torsten, 1971, et al. (författare)
  • Particle sources and transport in stratified Nordic coastal seas in the Anthropocene
  • 2018
  • Ingår i: Elementa: Science of the Anthropocene. - : University of California Press. - 2325-1026. ; 6:1
  • Forskningsöversikt (refereegranskat)abstract
    • Particles of all origins (biogenic, lithogenic, as well as anthropogenic) are fundamental components of the coastal ocean and are re-distributed by a wide variety of transport processes at both horizontal and vertical scales. Suspended particles can act as vehicles, as well as carbon and nutrient sources, for microorganisms and zooplankton before eventually settling onto the seafloor where they also provide food to benthic organisms. Different particle aggregation processes, driven by turbulence and particle stickiness, composition, abundance and size, impact the transport and sinking behavior of particles from the surface to the seafloor. In deep coastal waters, the deposition, resuspension, and accumulation of particles are driven by particle stickiness, composition and aggregate structure. In contrast, wave-driven and bottom current-driven processes in the nepheloid benthic boundary layer of shallow waters are of greater importance to the settling behavior of particles, while the retention capacity of benthic vegetation (e.g., seagrasses) further influences particle behavior. In this review, we consider the various processes by which particles are transported, as well as their sources and characteristics, in stratified coastal waters with a focus on Nordic seas. The role of particles in diminishing the quality of coastal waters is increasing in the Anthropocene, as particle loading by rivers and surface run-off includes not only natural particles, but also urban and agricultural particles with sorbed pollutants and contaminants of organic, inorganic and microplastic composition. Human activities such as trawling and dredging increase turbidity and further impact the transport of particles by resuspending particles and influencing their vertical and horizontal distribution patterns. An interdisciplinary approach combining physical, chemical and biological processes will allow us to better understand particle transport and its impact on coastal waters and estuaries at an ecosystem level. There is a need for development of novel analytical and characterization techniques, as well as new in situ sensors to improve our capacity to follow particle dynamics from nanometer to millimeter size scales.
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5.
  • Nilsson, R. Henrik, 1976, et al. (författare)
  • Mycobiome diversity: high-throughput sequencing and identification of fungi.
  • 2019
  • Ingår i: Nature reviews. Microbiology. - : Springer Science and Business Media LLC. - 1740-1534 .- 1740-1526. ; 17, s. 95-109
  • Forskningsöversikt (refereegranskat)abstract
    • Fungi are major ecological players in both terrestrial and aquatic environments by cycling organic matter and channelling nutrients across trophic levels. High-throughput sequencing (HTS) studies of fungal communities are redrawing the map of the fungal kingdom by hinting at its enormous - and largely uncharted - taxonomic and functional diversity. However, HTS approaches come with a range of pitfalls and potential biases, cautioning against unwary application and interpretation of HTS technologies and results. In this Review, we provide an overview and practical recommendations for aspects of HTS studies ranging from sampling and laboratory practices to data processing and analysis. We also discuss upcoming trends and techniques in the field and summarize recent and noteworthy results from HTS studies targeting fungal communities and guilds. Our Review highlights the need for reproducibility and public data availability in the study of fungal communities. If the associated challenges and conceptual barriers are overcome, HTS offers immense possibilities in mycology and elsewhere.
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6.
  • Niskanen, Tuula, et al. (författare)
  • Pushing the Frontiers of Biodiversity Research: Unveiling the Global Diversity, Distribution, and Conservation of Fungi
  • 2023
  • Ingår i: ANNUAL REVIEW OF ENVIRONMENT AND RESOURCES. - 1543-5938 .- 1545-2050. ; 48, s. 149-176
  • Forskningsöversikt (refereegranskat)abstract
    • Fungi comprise approximately 20% of all eukaryotic species and are connected to virtually all life forms on Earth. Yet, their diversity remains contentious, their distribution elusive, and their conservation neglected.We aim to flip this situation by synthesizing current knowledge.We present a revised estimate of 2-3 million fungal species with a "best estimate" at 2.5 million. To name the unknown >90% of these by the end of this century, we propose recognition of species known only from DNA data and call for large-scale sampling campaigns.We present an updated global map of fungal richness, highlighting tropical and temperate ecoregions of high diversity. We call for further Red List assessments and enhanced management guidelines to aid fungal conservation. Given that fungi play an inseparable role in our lives and in all ecosystems, and considering the fascinating questions remaining to be answered, we argue that fungi constitute the next frontier of biodiversity research.
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7.
  • Reckermann, M., et al. (författare)
  • Human impacts and their interactions in the Baltic Sea region
  • 2022
  • Ingår i: Earth Syst. Dynam.. - : Copernicus GmbH. - 2190-4987 .- 2190-4979. ; 13:1, s. 1-80
  • Forskningsöversikt (refereegranskat)abstract
    • Coastal environments, in particular heavily populated semi-enclosed marginal seas and coasts like the Baltic Sea region, are strongly affected by human activities. A multitude of human impacts, including climate change, affect the different compartments of the environment, and these effects interact with each other. As part of the Baltic Earth Assessment Reports (BEAR), we present an inventory and discussion of different human-induced factors and processes affecting the environment of the Baltic Sea region, and their interrelations. Some are naturally occurring and modified by human activities (i.e. climate change, coastal processes, hypoxia, acidification, submarine groundwater discharges, marine ecosystems, non-indigenous species, land use and land cover), some are completely human-induced (i.e. agriculture, aquaculture, fisheries, river regulations, offshore wind farms, shipping, chemical contamination, dumped warfare agents, marine litter and microplastics, tourism, and coastal management), and they are all interrelated to different degrees. We present a general description and analysis of the state of knowledge on these interrelations. Our main insight is that climate change has an overarching, integrating impact on all of the other factors and can be interpreted as a background effect, which has different implications for the other factors. Impacts on the environment and the human sphere can be roughly allocated to anthropogenic drivers such as food production, energy production, transport, industry and economy. The findings from this inventory of available information and analysis of the different factors and their interactions in the Baltic Sea region can largely be transferred to other comparable marginal and coastal seas in the world.
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8.
  • Vargas-Martinez, F., et al. (författare)
  • Neuropeptides as neuroprotective agents: Oxytocin a forefront developmental player in the mammalian brain
  • 2014
  • Ingår i: Progress in Neurobiology. - : Elsevier BV. - 0301-0082 .- 1873-5118. ; 123, s. 37-78
  • Forskningsöversikt (refereegranskat)abstract
    • Oxytocin (OT) plays a major role in the establishment of social bonds. Social bonds are linked to the activation of cell signaling pathways that promote neurotrophic and synaptic maturation, plasticity and memory changes. Anti-social behavior is often associated with abnormalities of cell signaling pathways and/or defective function of brain neurotransmitters within behavioral CNS circuits due to unproper environmental and social factors, such as, diet, stress, chemical, air pollution, and noise, during gestational period or/and during early postnatal development. OT exerts an important regulatory functions in maternity and parental behaviors, lactation, attachment, bonding, trust, and sensorial functions such as: homeostatic cardiovascular control, satiety, touch, pain, analgesia and sexual behavior. Noteworthy, OT displays important neuroprotective properties against fetal programmed hypertension when administered during early postnatal life, added to its known anabolic properties shown in adult rats, e.g. body weight control, reduces blood pressure, and increases analgesia. This review focuses on the new evidences supporting OT's role as a major neuroprotective nonapeptide provided by its quality to reverse hypertension programmed in utero by undernutrition. (C) 2014 Elsevier Ltd. All rights reserved.
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