Article
Geosciences, Multidisciplinary
S. Deng, S. Liu, X. Mo, L. Jiang, P. Bauer-Gottwein
Summary: This study compares different geophysical factors to determine the drivers of secular polar drift change in the 1990s, finding that accelerated ice melting over major glacial areas is the main driver.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Pharmacology & Pharmacy
Maria Joao Moreno, Hugo A. L. Filipe, Susana V. P. Cunha, Cristiana V. Ramos, Patricia A. T. Martins, Biebele Abel, Luis M. S. Loura, Suresh V. Ambudkar
Summary: The transport of drugs by efflux transporters plays a crucial role in drug resistance development by cancer cells and pathogens. In this study, the interaction between a series of fluorescent amphiphiles and the efflux transporter P-glycoprotein (P-gp) was explored. The results showed that the binding parameters obtained were apparent and a new formalism was proposed to better understand the binding affinity of amphiphiles with P-gp. It was found that the polar interactions are essential for this interaction, and an increase in lipophilicity and amphiphilicity enhanced the association with the lipid bilayer, inhibiting the function of P-gp.
Review
Biochemistry & Molecular Biology
Claudia Leoni, Bruno A. R. Gattulli, Graziano Pesole, Luigi R. Ceci, Mariateresa Volpicella
Summary: Amylomaltases are enzymes found only in prokaryotes and are involved in glycogen degradation and maltose metabolism. They are being studied for potential biotechnological applications such as the production of sugar substitutes, larger molecules like cycloamyloses, and thermoreversible starch gels. Additionally, extremophilic prokaryotes are being investigated for the identification of amylomaltases to be used in starch modifying processes under high temperature or extreme conditions.
Article
Geography, Physical
Glenn A. Jones, Bernd Kulessa, Ana M. G. Ferreira, Martin Schimmel, Andrea Berbellini, Andrea Morelli
Summary: Seismic Rayleigh wave ellipticity measurements are used to determine subsurface structure and are increasingly applied in glaciological research. Using the DOP-E method, we identify and extract Rayleigh waves in Greenland to study sea ice processes and upper crust geology. We suggest future applications of the DOP-E method for studying seasonal and long-term variability of sea ice and monitoring ice sheet thickness and subglacial environment in the polar regions.
ANNALS OF GLACIOLOGY
(2023)
Article
Environmental Sciences
Wasim Sajjad, Barkat Ali, Hewen Niu, Nikhat Ilahi, Muhammad Rafiq, Ali Bahadur, Abhishek Banerjee, Shichang Kang
Summary: This study investigated the characteristics, prevalence of resistance genes, and tolerance genes in antibiotic-resistant bacteria (ARB) isolated from glacier debris and meltwater in China. The results showed that these bacteria exhibited resistance to multiple antibiotics and metals, with distinct resistance genes identified. The study also highlighted the horizontal transfer of resistance genes between different bacteria species and a strong positive correlation between antibiotic resistance genes and metals tolerance genes.
ENVIRONMENTAL RESEARCH
(2023)
Review
Biochemistry & Molecular Biology
Nikolina Atanasova, Stoyanka Stoitsova, Tsvetelina Paunova-Krasteva, Margarita Kambourova
Summary: The extensive waste accumulation of plastics poses enormous hazards to the environment and living organisms, prompting scientific interest in their biodegradation. Limited studies have shown that certain extremophilic bacteria have the potential to degrade synthetic plastics in natural and laboratory settings, providing insight into potential solutions for pollution problems.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Stevie Brown, Ewan Cruickshank, John M. D. Storey, Corrie T. Imrie, Damian Pociecha, Magdalena Majewska, Anna Makal, Ewa Gorecka
Summary: This study reports liquid-crystal materials with up to three nematic phases, each exhibiting different properties such as ferroelectric order, apolar order, and local antiferroelectric order. The modification of molecular structure through increasing lateral fluorine substituents leads to a direct isotropic-ferronematic phase transition in one of the materials.
Article
Physics, Fluids & Plasmas
Riccardo Ben Ali Zinati, Marc Besse, Gilles Tarjus, Matthieu Tissier
Summary: The influence of quenched disorder on the flocking transition of dense polar active matter is examined. A new universality class, controlled by a quenched Navier-Stokes fixed point, describes the scaling behavior of the system. Critical exponents are determined through a perturbative renormalization group analysis. The study shows that random force and random mass (dilution) belong to the same universality class.
Review
Microbiology
Vera Zgonik, Janez Mulec, Tina Elersek, Nives Ogrinc, Polona Jamnik, Natasa Poklar Ulrih
Summary: Extremophiles can thrive in a wide range of environments, with different species adapted to different stressors. In central Europe, extremophiles in moderate climates in Slovenia exhibit diverse adaptations. Cold-adapted extremophiles are found in ice caves and alpine glaciers, while halophiles prefer salterns and thermophiles inhabit thermal springs. Further research is needed to fully understand the potential uses of extremophiles in biotechnology and bioremediation.
Article
Multidisciplinary Sciences
Danijela Santic, Iva Stojan, Frano Matic, Zeljka Trumbic, Ana Vrdoljak Tomas, Zeljana Fredotovic, Kasia Piwosz, Ivana Lepen Pleic, Stefanija Sestanovic, Mladen Solic
Summary: By combining qualitative 16S metabarcoding and quantitative CARD-FISH methods with neural gas analysis, this study revealed different patterns of the picoplankton community in response to changing environmental conditions in the Adriatic Sea. The study shows that the initial state of community structure changes according to environmental conditions and is expressed as qualitative and quantitative changes. A general pattern of increasing diversity and decreasing abundance of the community was observed, especially under harsh environmental conditions and increasing salinity.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Ewa Przezdziecka, Karolina M. Paradowska, Rafal Jakiela, Serhii Kryvyi, Eunika Zielony, Ewa Placzek-Popko, Wojciech Lisowski, Piotr Sybilski, Dawid Jarosz, Abinash Adhikari, Marcin Stachowicz, Adrian Kozanecki
Summary: This article presents a systematic study on Sb-doped Zn1-xMgxO layers with various Mg concentrations, grown on different orientations of sapphire substrates. The study confirmed the depth distribution and chemical state of the Sb dopant, and investigated the effects of Mg alloying on strain and band gaps of ZnMgO layers. The results showed a correlation between the differences in transmittance energy gaps and PL peaks with increasing Mg content.
Article
Environmental Sciences
Fangdi Sun, Bin He, Caixia Liu, Yuchao Zeng
Summary: The study of 57 lakes near the Tanggula Mountains on the Tibetan Plateau revealed changes in the lakes over recent decades, with non-glacier-fed lakes being more sensitive to precipitation variation and glacier-fed lakes more sensitive to temperature changes. Glacier melting significantly contributed to the increase in lake volume, particularly in Selin Co.
Article
Geography, Physical
Joseph A. Graly, Soroush Rezvanbehbahani
Summary: By comparing the major ion chemistry of subglacial boreholes and discharging subglacial waters, three fundamentally different glacier hydrochemical regimes are identified. This suggests the need for new and ambitious sampling programs to characterize difficult to access subglacial waters and quantify their impact on glacier dynamics, geobiology, and global geochemical cycling.
ANNALS OF GLACIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
C. G. Carr, J. D. Carmichael, E. C. Pettit
Summary: This study investigates the mechanism of hypersaline brine release at the surface of Taylor Glacier in Antarctica. The researchers find that surface melt-induced hydrofracture is unlikely to trigger brine release, and there is no discernible elevated surface wave activity associated with the release events. However, a seasonal pattern of seismic events is observed, with more events occurring in the summer from the Blood Falls source area.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geosciences, Multidisciplinary
Lindsey Nicholson, Anna Wirbel, Christoph Mayer, Astrid Lambrecht
Summary: The ongoing changes in mountain glaciers have a significant impact on local water resources, hazard potential, and global sea level rise. Research indicates that glaciers covered in rock debris respond differently to climate forcing compared to debris-free glaciers, highlighting the importance of understanding the evolution of debris cover for accurate glacier modeling. Addressing key research targets and improving numerical representations of debris-covered glaciers are essential for enhancing regional and global glacier models.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Agronomy
Janice Duy, Rosemary L. Smith, Scott D. Collins, Laurie B. Connell
AMERICAN JOURNAL OF POTATO RESEARCH
(2015)
Article
Microbiology
Bradley M. Tebo, Richard E. Davis, Roberto P. Anitori, Laurie B. Conne, Peter Schiffman, Hubert Staudigel
FRONTIERS IN MICROBIOLOGY
(2015)
Review
Biochemistry & Molecular Biology
Daniel A. McPartlin, Michael J. Lochhead, Laurie B. Connell, Gregory J. Doucette, Richard J. O'Kennedy
BIOSENSOR TECHNOLOGIES FOR DETECTION OF BIOMOLECULES
(2016)
Article
Biodiversity Conservation
Ceridwen I. Fraser, Laurie Connell, Charles K. Lee, S. Craig Cary
Article
Marine & Freshwater Biology
Jennifer M. Phillips, V. Monica Bricelj, Maren Mitch, Robert M. Cerrato, Scott MacQuarrie, Laurie B. Connell
AQUATIC TOXICOLOGY
(2018)
Article
Environmental Sciences
Caleb Slemmons, Gregory Johnson, Laurie B. Connell
Article
Biophysics
Janice Duy, Rosemary L. Smith, Scott D. Collins, Laurie B. Connell
BIOSENSORS & BIOELECTRONICS
(2014)
Article
Biochemistry & Molecular Biology
Benedetta Turchetti, Skye R. Thomas Hall, Laurie B. Connell, Eva Branda, Pietro Buzzini, Bart Theelen, Wally H. Mueller, Teun Boekhout
Article
Biochemistry & Molecular Biology
Joseph J. Dalluge, Laurie B. Connell
Article
Plant Sciences
Nina Lundholm, Stephen S. Bates, Keri A. Baugh, Brian D. Bill, Laurie B. Connell, Claude Leger, Vera L. Trainer
JOURNAL OF PHYCOLOGY
(2012)
Article
Biochemistry & Molecular Biology
Joseph J. Dalluge, Elizabeth C. Brown, Laurie B. Connell
Article
Multidisciplinary Sciences
Silvie Neradilova, Laurie Connell, Pavel Hulva, Barbora Cerna Bolfikova
Article
Biotechnology & Applied Microbiology
Paula Nizovoy, Nicolas Bellora, Sajeet Haridas, Hui Sun, Chris Daum, Kerrie Barry, Igor Grigoriev, Diego Libkind, Laurie B. Connell, Martin Moline
Summary: Cold environments pose challenges to organisms, but polyextremophile microorganisms can survive in such conditions due to a range of counteracting mechanisms. Comparative genomics of Naganishia vishniacii revealed unique cold-associated adaptations, including the absence of genes encoding solute transfers and chaperones in sister species, and possible evidence of positive selection in shared orthologs.
FEMS YEAST RESEARCH
(2021)
Article
Biology
Laurie Connell, Benjamin Segee, Regina Redman, Russell J. Rodriguez, Hubert Staudigel
Article
Ecology
Edith C. Hammer, Carlos Arellano-Caicedo, Paola Micaela Mafla-Endara, E. Toby Kiers, Tom Shimizu, Pelle Ohlsson, Kristin Aleklett
Summary: This study used microfluidic chips to investigate foraging strategies and habitat modification of Rhizophagus irregularis symbiotically associated with carrot roots. The researchers found that AMF hyphae can forage over long distances, prefer straight passages, and show branching induction when encountering obstacles. They also observed bi-directional transport of cellular content inside the hyphae and strategic allocation of biomass within the mycelium. Additionally, the AMF hyphae modified the pore-spaces in the chips by clogging them with irregularly shaped spores. These findings have important implications for understanding the impact of AMF on water retention in soils.
