Purpose: The purpose of this study was to describe a patient with a primary CD4+ T-cell lymphoproliferative disorder of conjunctiva.
Methods: Case report and review of the literature.
Results: An 81-year-old man was referred for asymptomatic bilateral conjunctival masses that on biopsy revealed a proliferation of mature CD4+ lymphocytes associated with T-cell receptor γ gene rearrangement.
Across biomes, soil biodiversity promotes ecosystem functions. However, whether this relationship will be maintained within ecosystems under climate change is uncertain. Here, using two long-term soil warming experiments, we investigated how warming affects the relationship between ecosystem functions and bacterial diversity across seasons, soil horizons, and warming duration.
View Article and Find Full Text PDFsp. RC80 was isolated from temperate deciduous forest soil in New England. The assembled genome is a single contig with 5,977,337 bp and 97.
View Article and Find Full Text PDFSoil carbon loss is likely to increase due to climate warming, but microbiomes and microenvironments may dampen this effect. In a 30-year warming experiment, physical protection within soil aggregates affected the thermal responses of soil microbiomes and carbon dynamics. In this study, we combined metagenomic analysis with physical characterization of soil aggregates to explore mechanisms by which microbial communities respond to climate warming across different soil microenvironments.
View Article and Find Full Text PDFClimate change jeopardizes human health, global biodiversity, and sustainability of the biosphere. To make reliable predictions about climate change, scientists use Earth system models (ESMs) that integrate physical, chemical, and biological processes occurring on land, the oceans, and the atmosphere. Although critical for catalyzing coupled biogeochemical processes, microorganisms have traditionally been left out of ESMs.
View Article and Find Full Text PDFThe complete genome sequence of strain RC340, isolated from an environmental microbiology experiment soil sample is presented here. strain RC340 sequenced by GridION consists of a single genome consisting of 5.86 million bases, 8,152 predicted genes, and 0.
View Article and Find Full Text PDFAppl Environ Microbiol
November 2023
Soils are the largest terrestrial carbon sink and the foundation of our food, fiber, and fuel systems. Healthy soils are carbon sinks, storing more carbon than they release. This reduces the amount of carbon dioxide released into the atmosphere and buffers against climate change.
View Article and Find Full Text PDFsp. strain RC67 was isolated from the Harvard Forest long-term soil warming experiment. The assembled genome is a single contig with 7,963,753 bp and 99.
View Article and Find Full Text PDFWe report the complete genome sequence of strain NP1. This bacterium was isolated from forest soil that had been subject to chronic warming. The genome of this novel isolated bacteria is presented as a single circular contig of 7,712,921 base pairs with 64.
View Article and Find Full Text PDFspp. RC334 and RC343 were isolated from heated soil in a long-term soil warming experiment. Both genomes were 5.
View Article and Find Full Text PDFMicrobes are responsible for cycling carbon (C) through soils, and predicted changes in soil C stocks under climate change are highly sensitive to shifts in the mechanisms assumed to control the microbial physiological response to warming. Two mechanisms have been suggested to explain the long-term warming impact on microbial physiology: microbial thermal acclimation and changes in the quantity and quality of substrates available for microbial metabolism. Yet studies disentangling these two mechanisms are lacking.
View Article and Find Full Text PDFNovel bacterial isolates with the capabilities of lignin depolymerization, catabolism, or both, could be pertinent to lignocellulosic biofuel applications. In this study, we aimed to identify anaerobic bacteria that could address the economic challenges faced with microbial-mediated biotechnologies, such as the need for aeration and mixing. Using a consortium seeded from temperate forest soil and enriched under anoxic conditions with organosolv lignin as the sole carbon source, we successfully isolated a novel bacterium, designated 159R.
View Article and Find Full Text PDFDispersal is a fundamental community assembly process that maintains soil microbial biodiversity across spatial and temporal scales, yet the impact of dispersal on ecosystem function is largely unpredictable. Dispersal is unique in that it contributes to both ecological and evolutionary processes and is shaped by both deterministic and stochastic forces. The ecosystem-level ramifications of dispersal outcomes are further compounded by microbial dormancy dynamics and environmental selection.
View Article and Find Full Text PDFMicrobiol Resour Announc
January 2022
We report the draft genome sequence of Leifsonia poae strain BS71. This bacterium was isolated from a low soil moisture content model soil microcosm inoculated with forest soil that had been subject to chronic warming.
View Article and Find Full Text PDFThe largest terrestrial carbon sink on earth is soil carbon stocks. As the climate changes, the rate at which the Earth's climate warms depends in part on the persistence of soil organic carbon. Microbial turnover forms the backbone of soil organic matter (SOM) formation and it has been recently proposed that SOM molecular complexity is a key driver of stability.
View Article and Find Full Text PDFTerrestrial ecosystems are an important carbon store, and this carbon is vulnerable to microbial degradation with climate warming. After 30 years of experimental warming, carbon stocks in a temperate mixed deciduous forest were observed to be reduced by 30% in the heated plots relative to the controls. In addition, soil respiration was seasonal, as was the warming treatment effect.
View Article and Find Full Text PDFHumans are inextricably linked to each other and our natural world, and microorganisms lie at the nexus of those interactions. Microorganisms form genetically flexible, taxonomically diverse, and biochemically rich communities, i.e.
View Article and Find Full Text PDFContext: After a possible concussion mechanism, cadets are unlikely to have a list of concussion signs and symptoms at their disposal. As such, unprompted concussion knowledge may be an essential factor in personal recognition of injury.
Objective: To explore determinants that contributed to United States Air Force Academy (USAFA) cadets' disclosure of a concussion.
Background: The relationship between low oxygen delivery (DO) on cardiopulmonary bypass and morbidity and mortality following cardiac surgery remains unexamined.
Methods: We reviewed patients undergoing Society of Thoracic Surgeons index procedures from March 2019 to July 2020, coincident with implementation of a new electronic perfusion record that provides for continuous recording of DO and flow parameters. Continuous perfusion variables were analyzed using area-over-the-curve (AOC) calculations below predefined thresholds (DO <280 mL O/min/m, cardiac index <2.
Microbiol Resour Announc
December 2020
Here, we present the draft genome sequence of a novel species of the genus (phylum , family ) isolated from soil. sp. strain GP187 has a relatively large mobilome and numerous novel genes that may contribute to the production of bioactive molecules.
View Article and Find Full Text PDFMicrobiol Resour Announc
September 2020
are bacterial endosymbionts that are also found free-living in soil. Here, we present the genome sequences of two novel bacterial members of the order , class , isolated from temperate terrestrial forest soils. The genomes for MT45 and GAS493 indicate a genetic capacity for carbohydrate degradation but not nitrogen fixation.
View Article and Find Full Text PDFLignin is the second most abundant carbon polymer on earth and despite having more fuel value than cellulose, it currently is considered a waste byproduct in many industrial lignocellulose applications. Valorization of lignin relies on effective and green methods of de-lignification, with a growing interest in the use of microbes. Here we investigate the physiology and molecular response of the novel facultative anaerobic bacterium, Tolumonas lignolytica BRL6-1, to lignin under anoxic conditions.
View Article and Find Full Text PDFEmpirical evidence for the response of soil carbon cycling to the combined effects of warming, drought and diversity loss is scarce. Microbial carbon use efficiency (CUE) plays a central role in regulating the flow of carbon through soil, yet how biotic and abiotic factors interact to drive it remains unclear. Here, we combine distinct community inocula (a biotic factor) with different temperature and moisture conditions (abiotic factors) to manipulate microbial diversity and community structure within a model soil.
View Article and Find Full Text PDFThis gamma scintigraphy imaging study assessed pulmonary, extrathoracic and regional lung deposition patterns of a radiolabelled inhaled corticosteroid/long-acting muscarinic antagonist/long-acting β-agonist triple fixed-dose combination budesonide/glycopyrronium/formoterol fumarate dihydrate (BGF 320/14.4/10 μg), delivered by pressurised metered dose inhaler (pMDI) using innovative co-suspension delivery technology (Aerosphere™). In this Phase I, randomised, single-centre, single-dose, two-period, crossover study (NCT03740373), 10 healthy male adults received two actuations of BGF MDI (160/7.
View Article and Find Full Text PDF