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  • Oxford University Press  (6)
  • Springer  (5)
  • American Chemical Society  (4)
  • National Academy of Sciences
  • Wiley-Blackwell
  • 2020-2024  (16)
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  • 1
    Publication Date: 2024-02-07
    Description: Omic BON is a thematic Biodiversity Observation Network under the Group on Earth Observations Biodiversity Observation Network (GEO BON), focused on coordinating the observation of biomolecules in organisms and the environment. Our founding partners include representatives from national, regional, and global observing systems; standards organizations; and data and sample management infrastructures. By coordinating observing strategies, methods, and data flows, Omic BON will facilitate the co-creation of a global omics meta-observatory to generate actionable knowledge. Here, we present key elements of Omic BON's founding charter and first activities.
    Type: Article , PeerReviewed
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  • 2
    Publication Date: 2021-07-01
    Description: The results of a search for gluino and squark pair production with the pairs decaying via the lightest charginos into a final state consisting of two W bosons, the lightest neutralinos ($$ilde{chi }^0_1$$ χ ~ 1 0 ), and quarks, are presented: the signal is characterised by the presence of a single charged lepton ($$e^{pm }$$ e ± or $$mu ^{pm }$$ μ ± ) from a W boson decay, jets, and missing transverse momentum. The analysis is performed using 139 fb$$^{-1}$$ - 1 of proton–proton collision data taken at a centre-of-mass energy $$sqrt{s}=13$$ s = 13   delivered by the Large Hadron Collider and recorded by the ATLAS experiment. No statistically significant excess of events above the Standard Model expectation is found. Limits are set on the direct production of squarks and gluinos in simplified models. Masses of gluino (squark) up to 2.2  (1.4 ) are excluded at 95% confidence level for a light $$ilde{chi }^0_1$$ χ ~ 1 0 .
    Print ISSN: 1434-6044
    Electronic ISSN: 1434-6052
    Topics: Physics
    Published by Springer
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  • 3
  • 4
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    Oxford University Press
    Publication Date: 2024-04-01
    Description: "An Equal Burden forms the first scholarly study of the Army Medical Services in the First World War to focus on the roles and experiences of the men of the ranks of the Royal Army Medical Corps (RAMC). These men, through their work as stretcher bearers and orderlies, provided a range of labour, both physical and emotional, in aid of the sick and wounded. They were not professional medical caregivers, yet were called upon to provide medical care, however rudimentary; they served in uniform, under military discipline, yet were forbidden, as non-combatants, from carrying weapons. Their service as men in wartime, was thus unique. Structured both chronologically and thematically, this study examines both the work that RAMC rankers undertook and its importance to the running of the chain of medical evacuation. It additionally explores the gendered status of these men within the medical, military and cultural hierarchies of a society engaged in total war, locating their service within the context of that of doctors, female nurses and combatant servicemen. Through close readings of official documents, personal papers, and cultural representations, both verbal and visual, it argues that the ranks of the RAMC formed a space in which non-commissioned servicemen, through their many roles, defined and redefined medical caregiving as men’s work in wartime."
    Keywords: Royal Army Medical Corps ; First World War ; masculinity ; non-combatants ; military medicine ; care giving ; gender history ; cultural representation ; thema EDItEUR::N History and Archaeology ; thema EDItEUR::3 Time period qualifiers::3M c 1500 onwards to present day::3MP 20th century, c 1900 to c 1999 ; thema EDItEUR::N History and Archaeology::NH History::NHW Military history::NHWR Specific wars and campaigns::NHWR5 First World War ; thema EDItEUR::3 Time period qualifiers::3M c 1500 onwards to present day::3MP 20th century, c 1900 to c 1999::3MPB Early 20th century c 1900 to c 1950::3MPBF c 1910 to c 1919::3MPBFB c 1914 to c 1918 (World War One period) ; thema EDItEUR::M Medicine and Nursing
    Language: English
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  • 5
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    Springer Nature | Springer
    Publication Date: 2024-03-29
    Description: This open access book aims to show which factors have been decisive in the rise of successful countries. Never before have so many people been so well off. However, prosperity is not a law of nature; it has to be worked for. A liberal economy stands at the forefront of this success – not as a political system, but as a set of economic rules promoting competition, which in turn leads to innovation, research and enormous productivity. Sustainable prosperity is built on a foundation of freedom, equal opportunity and a functioning government. This requires a stable democracy that cannot be defeated by an autocrat. Autocrats claim that “illiberalism” is more efficient, an assertion that justifies their own power. Although autocrats can efficiently guide the first steps out of poverty, once a certain level of prosperity has been achieved, people begin to demand a sense of well-being – freedom and codetermination. Only when this is possible will they feel comfortable, and progress will continue. Respect for human rights is crucial. The rules of the free market do not lean to either the right or left politically. Liberalism and the welfare state are not mutually exclusive. The “conflict” concerns the amount of government intervention. Should there be more or less? As a lawyer, entrepreneur, and board member with over 40 years of experience in this field of conflict, the author clearly describes the conditions necessary for a country to maintain its position at the top.
    Keywords: Comparative Politics ; Political Theory ; International Economics ; Governance and Government ; Liberalism ; Equal opportunity ; Stable democracy ; Freedom ; Free market ; Government intervention ; Liberal Economy ; Illiberalism ; Human rights ; Autocracy ; Poverty ; Prosperity ; Productivity ; Innovation ; Welfare state ; European Union ; Switzerland ; Immigration ; Integration ; Open access ; Comparative politics ; Political science & theory ; International economics ; Political structure & processes ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPB Comparative politics ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPA Political science and theory ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics::KCL International economics ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPH Political structure and processes
    Language: English
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  • 6
    Publication Date: 2023-02-08
    Description: Parasites are arguably among the strongest drivers of natural selection, constraining hosts to evolve resistance and tolerance mechanisms. Although, the genetic basis of adaptation to parasite infection has been widely studied, little is known about how epigenetic changes contribute to parasite resistance and eventually, adaptation. Here, we investigated the role of host DNA methylation modifications to respond to parasite infections. In a controlled infection experiment, we used the three-spined stickleback fish, a model species for host-parasite studies, and their nematode parasite Camallanus lacustris. We showed that the levels of DNA methylation are higher in infected fish. Results furthermore suggest correlations between DNA methylation and shifts in key fitness and immune traits between infected and control fish, including respiratory burst and functional trans-generational traits such as the concentration of motile sperm. We revealed that genes associated with metabolic, developmental and regulatory processes (cell death and apoptosis) were differentially methylated between infected and control fish. Interestingly, genes such as the neuropeptide FF receptor 2 and the integrin alpha 1 as well as molecular pathways including the Th1 and Th2 cell differentiation were hypermethylated in infected fish, suggesting parasite-mediated repression mechanisms of immune responses. Altogether, we demonstrate that parasite infection contributes to genome-wide DNA methylation modifications. Our study brings novel insights into the evolution of vertebrate immunity and suggests that epigenetic mechanisms are complementary to genetic responses against parasite-mediated selection.
    Type: Article , PeerReviewed
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  • 7
    Publication Date: 2023-02-08
    Description: The two toothed jaws of cichlid fishes provide textbook examples of convergent evolution. Tooth phenotypes such as enlarged molar-like teeth used to process hard-shelled molluscs have evolved numerous times independently during cichlid diversification. While the ecological benefit of molar-like teeth to crush prey is known, it is unclear whether the same molecular mechanisms underlie these convergent traits. To identify genes involved in the evolution and development of enlarged cichlid teeth, we performed RNA-seq on the serially homologous toothed oral and pharyngeal jaws as well as the fourth toothless gill arch of Astatoreochromis alluaudi. We identified 27 genes that are highly upregulated on both tooth-bearing jaws compared to the toothless gill arch. Most of these genes have never been reported to play a role in tooth formation. Two of these genes (unk, rpfA) are not found in other vertebrate genomes but are present in all cichlid genomes. They also cluster genomically with two other highly expressed tooth genes (odam, scpp5) that exhibit conserved expression during vertebrate odontogenesis. Unk and rpfA were confirmed via in situ hybridization to be expressed in developing teeth of Astatotilapia burtoni. We then examined expression of the cluster's four genes in six evolutionarily independent and phylogenetically disparate cichlid species pairs each with a large- and a small-toothed species. Odam and unk commonly and scpp5 and rpfA always showed higher expression in larger-toothed cichlid jaws. Convergent trophic adaptations across cichlid diversity are associated with the repeated developmental deployment of this genomic cluster containing conserved and novel cichlid-specific genes.
    Type: Article , PeerReviewed
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  • 8
    Publication Date: 2024-02-07
    Description: In a conserved culture of the purple sulfur bacterium Thiospirillum jenense DSM216T, cells of this species were easily recognized by cell morphology, large-size spirilla and visible flagellar tuft. The Tsp. jenense genome is 3.22 Mb in size and has a GC content of 48.7 mol%. It was readily identified as a member of the Chromatiaceae by the complement of proteins in its genome. A whole genome comparison clearly placed Tsp. jenense near Thiorhodovibrio and Rhabdochromatium species and somewhat more distant from Thiohalocapsa and Halochromatium species. This relationship was also found with the sequences of the photosynthetic reaction center protein PufM. The genome sequence supported important properties of this bacterium: the presence of ribulose-bisphosphate carboxylase and enzymes of the Calvin cycle of autotrophic carbon dioxide fixation but the absence of carboxysomes, an incomplete tricarboxylic acid cycle and the lack of malate dehydrogenase, the presence of a sulfur oxidation pathway including adenylylsulfate reductase (aprAB) but absence of assimilatory sulfate reduction, the presence of hydrogenase (hoxHMFYUFE), nitrogenase and a photosynthetic gene cluster (pufBALMC). The FixNOP type of cytochrome oxidase was notably lacking, which may be the reason that renders the cells highly sensitive to oxygen. Two minor phototrophic contaminants were found using metagenomic binning: one was identified as a strain of Rhodopseudomonas palustris and the second one has an average nucleotide identity of 82% to the nearest neighbor Rhodoferax antarcticus. It should be considered as a new species of this genus and Rhodoferax jenense is proposed as the name.
    Type: Article , PeerReviewed
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  • 9
    Publication Date: 2024-02-07
    Description: With over 18,000 species, the Acanthomorpha, or spiny-rayed fishes, form the largest and arguably most diverse radiation of vertebrates. One of the key novelties that contributed to their evolutionary success are the spiny rays in their fins that serve as a defense mechanism. We investigated the patterning mechanisms underlying the differentiation of median fin Anlagen into discrete spiny and soft rayed domains during the ontogeny of the direct-developing cichlid fish Astatotilapia burtoni. Distinct transcription factor signatures characterize these two fin domains, whereby mutually exclusive expression of hoxa13a/b with alx4a/b and tbx2b marks the spine to soft-ray boundary. The soft-ray domain is established by BMP inhibition via gremlin1b, which synergizes in the posterior fin with shh secreted from a zone of polarizing activity. Modulation of BMP signaling by chemical inhibition or gremlin1b CRISPR/Cas9 knockout induces homeotic transformations of spines into soft rays and vice versa. The expression of spine and soft-ray genes in nonacanthomorph fins indicates that a combination of exaptation and posterior expansion of an ancestral developmental program for the anterior fin margin allowed the evolution of robustly individuated spiny and soft-rayed domains. We propose that a repeated exaptation of such pattern might underly the convergent evolution of anterior spiny fin elements across fishes.
    Type: Article , PeerReviewed
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  • 10
    Publication Date: 2021-08-12
    Description: The settlement of Sahul, the lost continent of Oceania, remains one of the most ancient and debated human migrations. Modern New Guineans inherited a unique genetic diversity tracing back 50,000 years, and yet there is currently no model reconstructing their past population dynamics. We generated 58 new whole-genome sequences from Papua New Guinea, filling geographical gaps in previous sampling, specifically to address alternative scenarios of the initial migration to Sahul and the settlement of New Guinea. Here, we present the first genomic models for the settlement of northeast Sahul considering one or two migrations from Wallacea. Both models fit our data set, reinforcing the idea that ancestral groups to New Guinean and Indigenous Australians split early, potentially during their migration in Wallacea where the northern route could have been favored. The earliest period of human presence in Sahul was an era of interactions and gene flow between related but already differentiated groups, from whom all modern New Guineans, Bismarck islanders, and Indigenous Australians descend. The settlement of New Guinea was probably initiated from its southeast region, where the oldest archaeological sites have been found. This was followed by two migrations into the south and north lowlands that ultimately reached the west and east highlands. We also identify ancient gene flows between populations in New Guinea, Australia, East Indonesia, and the Bismarck Archipelago, emphasizing the fact that the anthropological landscape during the early period of Sahul settlement was highly dynamic rather than the traditional view of extensive isolation.
    Print ISSN: 0737-4038
    Electronic ISSN: 1537-1719
    Topics: Biology
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