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Articles 1 - 10 of 10
Full-Text Articles in Biology
Hypothesis And Theory: Do Trees "Release The Tension" In Rainwater? Surface Tension Reduction In Throughfall And Stemflow From Urban Trees, Benjamin J. Noren, Nicholas R. Lewis, Kelly Cristina Tonello, Anna Ilek, John T. Van Stan Ii
Hypothesis And Theory: Do Trees "Release The Tension" In Rainwater? Surface Tension Reduction In Throughfall And Stemflow From Urban Trees, Benjamin J. Noren, Nicholas R. Lewis, Kelly Cristina Tonello, Anna Ilek, John T. Van Stan Ii
Biological, Geological, and Environmental Faculty Publications
Knowledge of the processes and impacts associated with the canopy's partitioning of rainfall into stemflow (water that drains to the base of tree stems) and throughfall (water that drips through gaps and from canopy surfaces) has expanded in recent years. However, the effect of canopy interactions on the fundamental physical properties of rainwater as it travels through the canopy to the soil, particularly surface tension, remains understudied. To discuss specific hypotheses within this context and their relevance to ecohydrological theory, the surface tension of rainwater samples was examined directly. Over a period of 9 months, open rainwater, throughfall and stemflow …
Telomere Maintenance In African Trypanosomes, Bibo Li Ph.D.
Telomere Maintenance In African Trypanosomes, Bibo Li Ph.D.
Biological, Geological, and Environmental Faculty Publications
Telomere maintenance is essential for genome integrity and chromosome stability in eukaryotic cells harboring linear chromosomes, as telomere forms a specialized structure to mask the natural chromosome ends from DNA damage repair machineries and to prevent nucleolytic degradation of the telomeric DNA. In Trypanosoma brucei and several other microbial pathogens, virulence genes involved in antigenic variation, a key pathogenesis mechanism essential for host immune evasion and long-term infections, are located at subtelomeres, and expression and switching of these major surface antigens are regulated by telomere proteins and the telomere structure. Therefore, understanding telomere maintenance mechanisms and how these pathogens achieve …
Meiosis In Budding Yeast, G. Valentin Borner, Andreas Hochwagen, Amy J. Macqueen
Meiosis In Budding Yeast, G. Valentin Borner, Andreas Hochwagen, Amy J. Macqueen
Biological, Geological, and Environmental Faculty Publications
Meiosis is a specialized cell division program that is essential for sexual reproduction. The two meiotic divisions reduce chromosome number by half, typically generating haploid genomes that are packaged into gametes. To achieve this ploidy reduction, meiosis relies on highly unusual chromosomal processes including the pairing of homologous chromosomes, assembly of the synaptonemal complex, programmed formation of DNA breaks followed by their processing into crossovers, and the segregation of homologous chromosomes during the first meiotic division. These processes are embedded in a carefully orchestrated cell differentiation program with multiple interdependencies between DNA metabolism, chromosome morphogenesis, and waves of gene expression …
From Myzocytosis To Cytostomal Nutrient Uptake And Transport By Intracellular Plasmodium Species, T. Y. Sam-Yellowe
From Myzocytosis To Cytostomal Nutrient Uptake And Transport By Intracellular Plasmodium Species, T. Y. Sam-Yellowe
Biological, Geological, and Environmental Faculty Publications
No abstract provided.
Shower Thoughts: Why Scientists Should Spend More Time In The Rain, John T. Van Stan Ii, Scott T. Allen, Douglas P. Aubrey, Z. Carter Berry, Matthew Biddick, Miriam A.M.J. Coenders-Gerrits, Paolo Giordani, Sybil G. Gotsch, Ethan D. Gutmann, Yakov Kuzyakov, Donát Magyar, Valentina S.A. Mella, Kevin E. Mueller, Alexandra G. Ponette-González, Philipp Porada, Carla E. Rosenfeld, Jack Simmons
Shower Thoughts: Why Scientists Should Spend More Time In The Rain, John T. Van Stan Ii, Scott T. Allen, Douglas P. Aubrey, Z. Carter Berry, Matthew Biddick, Miriam A.M.J. Coenders-Gerrits, Paolo Giordani, Sybil G. Gotsch, Ethan D. Gutmann, Yakov Kuzyakov, Donát Magyar, Valentina S.A. Mella, Kevin E. Mueller, Alexandra G. Ponette-González, Philipp Porada, Carla E. Rosenfeld, Jack Simmons
Biological, Geological, and Environmental Faculty Publications
Stormwater is a vital resource and dynamic driver of terrestrial ecosystem processes. However, processes controlling interactions during and shortly after storms are often poorly seen and poorly sensed when direct observations are substituted with technological ones. We discuss how human observations complement technological ones and the benefits of scientists spending more time in the storm. Human observation can reveal ephemeral storm-related phenomena such as biogeochemical hot moments, organismal responses, and sedimentary processes that can then be explored in greater resolution using sensors and virtual experiments. Storm-related phenomena trigger lasting, oversized impacts on hydrologic and biogeochemical processes, organismal traits or functions, …
Unlocking Complex Soil Systems As Carbon Sinks: Multi-Pool Management As The Key, Gerrit Angst, Kevin E. Mueller, Michael J. Castellano, Cordula Vogel, Martin Wiesmeier, Carsten W. Mueller
Unlocking Complex Soil Systems As Carbon Sinks: Multi-Pool Management As The Key, Gerrit Angst, Kevin E. Mueller, Michael J. Castellano, Cordula Vogel, Martin Wiesmeier, Carsten W. Mueller
Biological, Geological, and Environmental Faculty Publications
Much research focuses on increasing carbon storage in mineral-associated organic matter (MAOM), in which carbon may persist for centuries to millennia. However, MAOM-targeted management is insufficient because the formation pathways of persistent soil organic matter are diverse and vary with environmental conditions. Effective management must also consider particulate organic matter (POM). In many soils, there is potential for enlarging POM pools, POM can persist over long time scales, and POM can be a direct precursor of MAOM. We present a framework for context-dependent management strategies that recognizes soils as complex systems in which environmental conditions constrain POM and MAOM formation.
Chlorophyll Dynamics From Sentinel-3 Using An Optimized Algorithm For Enhanced Ecological Monitoring In Complex Urban Estuarine Waters, Jonathan Sherman, Maria Tzortziou, Kyle J. Turner, Joaquim Goes, Brice Grunert
Chlorophyll Dynamics From Sentinel-3 Using An Optimized Algorithm For Enhanced Ecological Monitoring In Complex Urban Estuarine Waters, Jonathan Sherman, Maria Tzortziou, Kyle J. Turner, Joaquim Goes, Brice Grunert
Biological, Geological, and Environmental Faculty Publications
Urban estuaries are dynamic environments that hold high ecological and economic value. Yet, their optical complexity hinders accurate satellite retrievals of important biogeochemical variables, such as chlorophyll-a (Chl-a) biomass. Approaches based on a limited number of satellite spectral bands often fail to capture seasonal transitions and sharp spatial gradients in estuarine Chl-a concentrations, inhibiting integration of satellite data into water quality monitoring and conservation programs. We propose a novel approach that utilizes the wide range of spectral information captured by the Ocean and Land Color Instrument (OLCI) to retrieve estuarine Chl-a. To validate our approach, we used measurements in Long …
Molecular Peptide Grafting As A Tool To Create Novel Protein Therapeutics, Anton A. Komar
Molecular Peptide Grafting As A Tool To Create Novel Protein Therapeutics, Anton A. Komar
Biological, Geological, and Environmental Faculty Publications
The study of peptides (synthetic or corresponding to discrete regions of proteins) has facilitated the understanding of protein structure-activity relationships. Short peptides can also be used as powerful therapeutic agents. However, the functional activity of many short peptides is usually substantially lower than that of their parental proteins. This is (as a rule) due to their diminished structural organization, stability, and solubility often leading to an enhanced propensity for aggregation. Several approaches have emerged to overcome these limitations, which are aimed at imposing structural constraints into the backbone and/or sidechains of the therapeutic peptides (such as molecular stapling, peptide backbone …
Hypothalamic Menin Regulates Systemic Aging And Cognitive Decline, Lige Leng, Et. Al, Jingqi Yan, Jie Zhang
Hypothalamic Menin Regulates Systemic Aging And Cognitive Decline, Lige Leng, Et. Al, Jingqi Yan, Jie Zhang
Biological, Geological, and Environmental Faculty Publications
Aging is a systemic process, which is a risk factor for impaired physiological functions, and finally death. The molecular mechanisms driving aging process and the associated cognitive decline are not fully understood. The hypothalamus acts as the arbiter that orchestrates systemic aging through neuroinflammatory signaling. Our recent findings revealed that Menin plays important roles in neuroinflammation and brain development. Here, we found that the hypothalamic Menin signaling diminished in aged mice, which correlates with systemic aging and cognitive deficits. Restoring Menin expression in ventromedial nucleus of hypothalamus (VMH) of aged mice extended lifespan, improved learning and memory, and ameliorated aging …
Analysis Of 3.5 Million Sars-Cov-2 Sequences Reveals Unique Mutational Trends With Consistent Nucleotide And Codon Frequencies, Sarah E. Fumagalli, Nigam H. Padhiar, Douglas Meyer, Upendra Katneni, Haim Bar, Michael Dicuccio, Anton A. Komar, Chava Kimchi‑Sarfaty
Analysis Of 3.5 Million Sars-Cov-2 Sequences Reveals Unique Mutational Trends With Consistent Nucleotide And Codon Frequencies, Sarah E. Fumagalli, Nigam H. Padhiar, Douglas Meyer, Upendra Katneni, Haim Bar, Michael Dicuccio, Anton A. Komar, Chava Kimchi‑Sarfaty
Biological, Geological, and Environmental Faculty Publications
Background: Since the onset of the SARS-CoV-2 pandemic, bioinformatic analyses have been performed to understand the nucleotide and synonymous codon usage features and mutational patterns of the virus. However, comparatively few have attempted to perform such analyses on a considerably large cohort of viral genomes while organizing the plethora of available sequence data for a month-by-month analysis to observe changes over time. Here, we aimed to perform sequence composition and mutation analysis of SARS-CoV-2, separating sequences by gene, clade, and timepoints, and contrast the mutational profile of SARS-CoV-2 to other comparable RNA viruses.Methods: Using a cleaned, filtered, and pre-aligned dataset …