128 Works

Data from: Closely coupled evolutionary history of ecto- and endosymbionts from two distantly related animal phyla

Judith Zimmermann, Cecilia Wentrup, Miriam Sadowski, Anna Blazejak, Harald R. Gruber-Vodicka, Manuel Kleiner, Joerg A. Ott, Bodil Cronholm, Pierre De Wit, Christer Erséus & Nicole Dubilier
The level of integration between associated partners can range from ectosymbioses to extracellular and intracellular endosymbioses, and this range has been assumed to reflect a continuum from less intimate to evolutionarily highly stable associations. In this study, we examined the specificity and evolutionary history of marine symbioses in a group of closely related sulphur-oxidizing bacteria, called Candidatus Thiosymbion, that have established ecto- and endosymbioses with two distantly related animal phyla, Nematoda and Annelida. Intriguingly, in...

Data from: An in situ approach for measuring biogeochemical fluxes in structurally complex benthic communities

Florian Roth, Christian Wild, Susana Carvalho, Nils Rädecker, Christian R. Voolstra, Benjamin Kurten, Holger Anlauf, Yusuf C. El-Khaled, Ronan Carolan, Burton H. Jones & Yusuf C. El‐Khaled
1. The exchange of energy and nutrients are integral components of ecological functions of benthic shallow-water ecosystems and are directly dependent on in situ environmental conditions. Traditional laboratory experiments cannot account for the multidimensionality of interacting processes when assessing metabolic rates and biogeochemical fluxes of structurally complex benthic communities. Current in situ chamber systems are expensive, limited in their functionality, and the deployment is often restricted to planar habitats (e.g., sediments or seagrass meadows) only....

Heat stress responses of the kelp Laminaria digitata (Phaeophyceae) across Northeast Atlantic populations: growth, biochemistry, chlorophyll fluorescence, pigments

Daniel Liesner, Louise Fouqueau, Myriam Valero, Michael Y. Roleda, Gareth A. Pearson, Kai Bischof, Klaus Valentin & Inka Bartsch
To understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic features and phylogeography. We hypothesize that populations from Arctic and cold-temperate locations are less heat resilient than populations from warm distributional edges. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen...

Ku- and Ka-band polarimetric radar backscatter of Arctic sea ice between October 2019 and September 2020 - VERSION 2.0

Julienne Stroeve, Vishnu Nandan, Rasmus Tonboe, Stefan Hendricks, Robert Ricker & Gunnar Spreen
This data set provides processed Ku- and Ka-band fully-polarimetric backscatter and derived polarimetric parameters from hourly scans, acquired using the KuKa radar, during Legs 1, 2, 4 and 5 of the 2019-2020 MOSAiC International Arctic Drift Expedition. Scans were acquired during winter (Legs 1 and 2), advanced melt (Leg 4) and freeze-up (Leg 5) seasons, from various Remote Sensing (RS) sites, located in the MOSAiC ice floe. The first deployment of the KuKa radar was...

Deposition of Subglacial Lake Sediments underneath the Laurentide Ice Sheet? – Sediment Cores from Lake Melville, Canada, provide first Evidence

Sophie Kowalski, Christian Ohlendorf, Jens Matthiessen & Andrea Catalina Gebhardt
Lake Melville is a fjord-type lake located in Labrador, Eastern Canada, as part of the Hamilton Inlet System. It is significantly characterised by its eastern connection to the Labrador Sea through a shallow sill at the entrance to the Rigolet Narrows. In contrast, the western part of the lake receives freshwater input from several major rivers. Previous studies assumed that Lake Melville was fully excavated by the Laurentide Ice Sheet (LIS) during the last glacial....

First evidence from Lake Melville, Canada: Subglacial lake sediments underneath the Laurentide Ice Sheet?

Sophie Kowalski , Christian Ohlendorf , Andrea Catalina Gebhardt & Jens Matthiessen
The fjord-type Lake Melville is located in Labrador, Eastern Canada, as part of the Hamilton Inlet System. It is mainly characterised by riverine freshwater influx into its western end and intrusion of saline water from the Labrador Sea through the shallow Rigolet Narrows. Previous studies assumed that the retreating Laurentide Ice Sheet (LIS) caused the deposition of a typical glacial sediment sequence when its margin reached Lake Melville between 10,000 to 8,000 years ago (King,...

No warming in the eastern Gulf of Mexico since 1845 recorded by a Siderastrea siderea coral from Cuba

Marie Harbott , Henry C. Wu , Henning Kuhnert , Simone Kasemann , Anette Meixner , Carlos Jimenez , Patricia González-Díaz & Tim Rixen
Changes in the surface ocean pH and temperature caused by the uptake of anthropogenic CO2 are posing a threat to calcifying marine organisms. Recent studies have observed significant impacts on coral reef ecosystems with impaired carbonate skeletal growth and decreased calcification due to acidifying oceans. The current coverage of observations for the northwestern Cuban coastal waters provides an incomplete picture of natural climate variability over interannual to interdecadal timescales, showing the need for high resolution...

In-situ silicon isotopes in mantle wedge serpentinites - a new proxy for slab dehydration reactions

Sonja Geilert , Elmar Albers , Daniel A. Frick , Christian T. Hansen & Friedhelm von Blanckenburg
The Mariana forearc provides a unique natural laboratory to study slab dehydration in an active subduction zone by its deep-rooted mud volcanism. To test if mantle wedge serpentinites would record the source fluid composition and thus the dehydration reactions in the slab, we investigated silicon (Si) isotopic compositions (δ30Si) in serpentine veins by in-situ femtosecond laser ablation ICP mass spectrometry. Our samples were recovered during IODP Expedition 366 and originate from three mud volcanoes that...

Nutrition Transition in Europe: East-West Dimensions in the Last 30 Years-A Narrative Review

Klara G Dokova, Rouzha Z Pancheva, Natalya V Usheva, Galina A Haralanova, Silviya P Nikolova, Todorka I Kostadinova, Caue Egea Rodrigues, Jessica Radcliffe, Anne-Kathrin Illner & Krasimira Aleksandrova
The current review aims to summarize published research on nutrition transition patterns (depicting changes in dietary consumption) in European populations over the last three decades (1990-2020), with a focus on East-West regional comparisons. Pubmed and Google-Scholar databases were searched for articles providing information on repeated dietary intakes in populations living in countries across Europe, published between January 1990 and July 2021. From the identified 18,031 articles, 62 were found eligible for review (17 from Eastern...

Metabolic engineering enables Bacillus licheniformis to grow on the marine polysaccharide ulvan

Theresa Dutschei, Marie-Katherin Zühlke, Norma Welsch, Tom Eisenack, Maximilian Hilkmann, Joris Krull, Carlo Stühle, Stefan Brott, Alexandra Dürwald, Lukas Reisky, Jan-Hendrik Hehemann, Dörte Becher, Thomas Schweder & Uwe T. Bornscheuer
Abstract Background Marine algae are responsible for half of the global primary production, converting carbon dioxide into organic compounds like carbohydrates. Particularly in eutrophic waters, they can grow into massive algal blooms. This polysaccharide rich biomass represents a cheap and abundant renewable carbon source. In nature, the diverse group of polysaccharides is decomposed by highly specialized microbial catabolic systems. We elucidated the complete degradation pathway of the green algae-specific polysaccharide ulvan in previous studies using...

Additional file 1 of Metabolic engineering enables Bacillus licheniformis to grow on the marine polysaccharide ulvan

Theresa Dutschei, Marie-Katherin Zühlke, Norma Welsch, Tom Eisenack, Maximilian Hilkmann, Joris Krull, Carlo Stühle, Stefan Brott, Alexandra Dürwald, Lukas Reisky, Jan-Hendrik Hehemann, Dörte Becher, Thomas Schweder & Uwe T. Bornscheuer
Additional file 1: Table S1. Proteins and accession numbers. Table S2. Bacterial strains. Table S3. M9-mineral media d-glucose composition. Table S4. M9-mineral media additives. Table S5. Primer list. Figure S1. Sugar composition of the cultivation media. Figure S2. SDS-PAGE of F. agariphila KMM3901T enzymes expressed recombinantly in E. coli. Figure S3. Consumption of 5-dehydro-4-deoxy-d-glucuronate from B. licheniformis DSM13 during cultivation. Figure S4. Growth of B. licheniformis DSM13 on different ulvan hydrolysates. Figure S5. B. licheniformis...

Additional file 1 of A practical Alzheimer’s disease classifier via brain imaging-based deep learning on 85,721 samples

Bin Lu, Hui-Xian Li, Zhi-Kai Chang, Le Li, Ning-Xuan Chen, Zhi-Chen Zhu, Hui-Xia Zhou, Xue-Ying Li, Yu-Wei Wang, Shi-Xian Cui, Zhao-Yu Deng, Zhen Fan, Hong Yang, Xiao Chen, Paul M. Thompson, Francisco Xavier Castellanos & Chao-Gan Yan
Supplementary Figures and Tables

Clinical features of the first critical case of acute encephalitis caused by avian influenza A (H5N6) virus

Libing Zhang, Kaituo Liu, Qin Su, Xiao Chen, Xiaoquan Wang, Qingfeng Li, Wenlei Wang, Xuhua Mao, Jinmei Xu, Xin Zhou, Qin Xu, Le Zhou, Xiufan Liu & Pinghu Zhang
Highly pathogenic avian influenza virus (HPAIV) such as H5N1, H5N6, and H7N9 have been reported to frequently infect human, but acute encephalitis caused by HPAIV in human have been rarely reported. We report the first critical case of acute encephalitis with mild pneumonia caused by H5N6 virus. On January 25 of 2022, a 6-year-old girl with severe neurological symptoms was admitted to our hospital and rapidly developed to seizures and coma. Brain imaging showed abnormalities....

Additional file 3 of Weakening behavior of the shallow megasplay fault in the Nankai subduction zone

Alexander Roesner, Matt J. Ikari, Andre Hüpers & Achim J. Kopf
Additional file 3: Figure S2. Experimental data showing friction coefficient as a function of shear displacement for all experiments. Friction coefficient is either expressed in absolute values or normalized by peak friction. VS = velocity step experiment.

Additional file 1 of Threshold of main pancreatic duct for malignancy in intraductal papillary mucinous neoplasm at head-neck and body-tail

Hao Zhou, Xiaoshuang Li, Yajie Wang, Zhiyue Wang, Jingrong Zhu, Zhongqiu Wang & Xiao Chen
Additional file 1: Fig. S1. Receiver operating curve to calculate the threshold of main pancreatic duct (MPD) in identifying malignancy in branch-duct (BD)-intraductal papillary mucinous neoplasms (IPMNs). The threshold was 2.9 mm for lesions at head-neck (A) and was 3.1 mm for lesions at body-tail (B).

Additional file 1 of Threshold of main pancreatic duct for malignancy in intraductal papillary mucinous neoplasm at head-neck and body-tail

Hao Zhou, Xiaoshuang Li, Yajie Wang, Zhiyue Wang, Jingrong Zhu, Zhongqiu Wang & Xiao Chen
Additional file 1: Fig. S1. Receiver operating curve to calculate the threshold of main pancreatic duct (MPD) in identifying malignancy in branch-duct (BD)-intraductal papillary mucinous neoplasms (IPMNs). The threshold was 2.9 mm for lesions at head-neck (A) and was 3.1 mm for lesions at body-tail (B).

BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages

Peter Fretwell, Hamish Pritchard, David Vaughan, Jonathan Bamber, N. Barrand, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, D. Callens, H Conway, Alison Cook, Hugh Corr, D Damaske, V. Damn, Fausto Ferraccioli, Rene Forsberg, S. Fujita, Y. Gim, P. Gogineni, J. Griggs, Richard Hindmarsh, P. Holmlund … & Julien Bodart
We present here the Bedmap2 ice thickness, bed and surface elevation aggregated points and survey lines. The aggregated points consist of statistically-summarised shapefile points (centred on a continent-wide 500 m x 500 m grid) that reports the average values of ice thickness, bed and surface elevation from the full-resolution survey data and information on their distribution. The points presented here correspond to the additional points to Bedmap1 used for the gridding of Bedmap2. The data...

Redox conditions during deserpentinization in western Elba Island, Italy.

Malte Kalter & Wolfgang Bach
The observation of oxidized arc melts has led to a discussion about the redox conditions during the dehydration reactions of serpentinites in subduction zones. The discussed range of oxygen fugacities (fO2) between+5 and -2 log units relatively to the QFM buffer allows sulfur to be present either as oxidized or reduced species. This work investigates the development of the fO2 with serpentines form the western part of the island Elba in Italy. We compared observations...

Hippocampal microRNA-26a-3p deficit contributes to neuroinflammation and behavioral disorders via p38 MAPK signaling pathway in rats

Changmin Wang, Ye Li, Yuhang Yi, Guiyu Liu, Ruojing Guo, Liyan Wang, Tian Lan, Wenjing Wang, Xiao Chen, Shihong Chen & Shu Yan Yu
Abstract Background Neuronal injury is considered a critical risk factor in the pathogenesis of most neurological and neuropsychiatric diseases. However, the underlying molecular mechanisms and identification of potential therapeutic targets for preventing neuronal injury associated with brain function remain largely uncharacterized. Therefore, identifying neural mechanisms would put new insights into the progression of this condition and provide novel therapeutic strategies for the treatment of these diseases. Methods Stereotactic injection of AAV virus was used to...

Data from: Low genetic diversity despite multiple introductions of the invasive plant species Impatiens glandulifera in Europe

Jenny Hagenblad, Jennifer Hülskötter, Kamal Prasad Acharya, Jörg Brunet, Olivier Chabrerie, Sara A. O. Cousins, Pervaiz A. Dar, Martin Diekmann, Pieter De Frenne, Martin Hermy, Aurélien Jamoneau, Annette Kolb, Isgard Lemke, Jan Plue, Zafar A. Reshi & Bente Jessen Graae
Background: Invasive species can be a major threat to native biodiversity and the number of invasive plant species is increasing across the globe. Population genetic studies of invasive species can provide key insights into their invasion history and ensuing evolution, but also for their control. Here we genetically characterise populations of Impatiens glandulifera, an invasive plant in Europe that can have a major impact on native plant communities. We compared populations from the species’ native...

Data from: The hitchhiker's guide to Europe: the infection dynamics of an ongoing Wolbachia invasion and mitochondrial selective sweep in Rhagoletis cerasi

Hannes Schuler, Kirsten Koeppler, Sabine Daxböck-Horvath, Bilal Rasool, Susanne Krumboeck, Dietmar Schwarz, Thomas Hoffmeister, Birgit Schlick-Steiner, Florian Steiner, Arndt Telschow, Christian Stauffer, Wolfgang Arthofer, Markus Riegler, Birgit C. Schlick-Steiner, Florian M. Steiner & Thomas S. Hoffmeister
Wolbachia is a maternally inherited and ubiquitous endosymbiont of insects. It can hijack host reproduction by manipulations such as cytoplasmic incompatibility (CI) to enhance vertical transmission. Horizontal transmission of Wolbachia can also result in the colonization of new mitochondrial lineages. In this study, we present a 15-year-long survey of Wolbachia in the cherry fruit fly Rhagoletis cerasi across Europe and the spatiotemporal distribution of two prevalent strains, wCer1 and wCer2, and associated mitochondrial haplotypes in...

Friend or foe? a parasitic wasp shifts the cost/benefit ratio in a nursery pollination system impacting plant fitness.

Carmen Villacañas De Castro & Thomas S. Hoffmeister
Nursery pollination systems are species interactions where pollinators also act as fruit/seed herbivores of the plant partner. While the plants depend on associated insects for pollination, the insects depend on the plants’ reproductive structures for larval development. The outcome of these interactions are thus placed on a gradient between mutualism and antagonism. Less specialised interactions may fluctuate along this gradient with the ecological context, where natural enemies can play an important role. We studied whether...

MigrAgent

Rocco Paolillo & Wander Jager
MigrAgent simulates migration flows of a population from a home country to a host country and mutual adaptation of a migrant and local population post-migration. Agents accept interactions in intercultural networks depending on their degree of conservatism. Conservatism is a group-level parameter normally distributed within each ethnic group. Individual conservatism changes as function of reciprocity of interaction in intergroup experiences of acceptance or rejection. The aim of MigrAgent is to unfold different outcomes of integration,...

Data from: Seafloor microplastic hotspots controlled by deep-sea circulation

Ian Kane, Michael Clare, Elda Miramontes, Roy Wogelius, James Rothwell, Pierre Garreau & Florian Pohl
While microplastics are known to pervade the global seafloor, the processes that control their dispersal and concentration in the deep sea remain largely unknown. Here we show that thermohaline-driven currents, which build extensive seafloor sediment accumulations, can control the distribution of microplastics and create hotspots of up to 1.9 million pieces m^2. This is the highest reported value for any seafloor setting, globally. Previous studies propose that microplastics are transported to the seafloor by vertical...

Data from: Impact of brood parasitism and predation on nest survival of the fan-tailed gerygone in New Caledonia

Alfredo Attisano, Lara B. Groß, Nozomu J. Sato, Yuji Okahisa, Keita D. Tanaka, Roman Gula, Keisuke Ueda & Jörn Theuerkauf
Predation and brood parasitism are common reasons for nesting failure in passerine species and the additive impact by invasive species is a major conservation concern, particularly on tropical islands. Recognising the relative contribution of the different components of nesting failure rates is important to understand co-evolutionary interactions within brood parasite-host systems. In the remote archipelago of New Caledonia, the fan-tailed gerygone Gerygone flavolateralis is the exclusive host of the brood-parasitic shining bronze-cuckoo Chalcites lucidus. Additionally,...

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