Results 51 to 60 of about 1,077,039 (388)

Bomb-¹⁴C analysis of ecosystem respiration reveals that peatland vegetation facilitates release of old carbon [PDF]

, 2009
The largest terrestrial-to-atmosphere carbon flux is respired CO₂. However, the partitioning of soil and plant sources, understanding of contributory mechanisms, and their response to climate change are uncertain.
A.E. Fallick, A.P. Rowland, Amundson, Billett, Bol, Bol, Bond-Lamberty, Boutton, Briones, Chanton, Chanton, Chanton, Charman, Clymo, Clymo, Clymo, Colmer, Coplen, Craig, Duranceau, Duranceau, Eddy, Ehleringer, Evans, Fontaine, Forrest, Freeman, Fu, Garnett, Gaudinski, Ghashghaie, Ghashghaie, Gorham, Grogan, Hahn, Hardie, Hardie, Harkness, Harrison, Heal, Högberg, Joabsson, Jobbagy, Jungner, Klumpp, Koarashi, Koncalová, Kuzyakov, Lalonde, Levin, M.H. Garnett, Macdonald, Marinier, N.J. Ostle, Ostle, Ostle, Piao, Piao, Price, Proctor, Raskin, Raskin, Reimer, Rinnan, S.M.L. Hardie, Sapronov, Schimel, Schutz, Schuur, Scott, Shannon, Silvola, Silvola, Slota, Strom, Stuiver, Subke, Taylor, Tcherkez, Tipping, Tolonen, Trumbore, Turetsky, Verville, Waldron, Ward, Ward, Watson, Wookey, Xu, Yakir   +90 more
core   +1 more source

Ergothioneine supplementation improves pup phenotype and survival in a murine model of spinal muscular atrophy

FEBS Letters, EarlyView.
Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile, Daniela Ratto, Giorgia Rastelli, Ottavia Eleonora Ferraro, Caterina Temporini, Sunil Kumar, Simona Boncompagni, Paola Rossi, Monica Canepari   +8 more
wiley   +1 more source

Soil respiration in a northeastern US temperate forest: a 22‐year synthesis [PDF]

, 2013
To better understand how forest management, phenology, vegetation type, and actual and simulated climatic change affect seasonal and inter‐annual variations in soil respiration (Rs), we analyzed more than 100,000 individual measurements of soil ...
Bowden, R. D., Crill, Patrick M., Davidson, Erik A., Drake, J. E., Ellison, A. M., Finzi, A. C., Foster, D. R., Frey, Serita D., Giasson, M. A., Hadley, J. L., Lavine, M., Melillo, J. M., Munger, J. W., Nadelhoffer, K. J., Nicoll, L., Ollinger, Scott V., Savage, K. E., Steudler, P. A., Tang, J., Varner, Ruth K., Wofsy, S. C.   +20 more
core   +1 more source

Physiology of purple sulfur bacteria forming macroscopic aggregates in Great Sippewissett Salt Marsh, Massachusetts [PDF]

, 1993
Purple bacterial aggregates found in tidal pools of Great Sippewissett Salt Marsh (Falmouth, Cape Cod, MA) were investigated in order to elucidate the ecological significance of cell aggregation. Purple sulfur bacteria were the dominant microorganisms in
Angelica P. Seitz, Edgar, Gemerden, Gemerden, Gibson, Jörg Overmann, Jørgensen, Kaiser, Nicholson, Oelze, Overmann, Overmann, Overmann, Pfennig, Pierson, Pierson, Revbech, Revsbech, Revsbech, Rosenberg, Steenbergen, Tommy H. Nielsen, Visscher, Wit   +23 more
core   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Association of PM2.5 and PM10 with Acute Exacerbation of Chronic Obstructive Pulmonary Disease at lag0 to lag7: A Systematic Review and Meta-Analysis

COPD, 2022
This study aimed to conduct a meta-analysis to investigate whether short-term exposure to fine (PM2.5) and coarse (PM10) particulate matter was associated with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) hospitalization ...
Niuniu Li, Jianling Ma, Kun Ji, Liyun Wang   +3 more
doaj   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

FEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

A working model for cytoplasmic assembly of H/ACA snoRNPs

FEBS Letters, EarlyView.
Dyskerin is the component of nuclear H/ACA ribonucleoproteins (RNPs) endowed with pseudouridine synthase catalytic activity. Two isoforms of human dyskerin have been characterized: the abundant Iso1, mainly nuclear, and the shorter Iso3, mainly cytoplasmic but occasionally imported into nuclei.
Alberto Angrisani, Maria Furia
wiley   +1 more source

Lymphangiomatosis with pulmonary, mediastinal, and spinal involvement in a pediatric patient: a case report

BMC Pediatrics
Background Lymphangiomatosis is a rare disorder characterized by abnormal proliferation and dilation of lymphatic vessels, resulting in non-specific clinical manifestations.
Yuxing Sun, Jun Zhou, Xiaoqin Hu, Ming Li, Li Tan   +4 more
doaj   +1 more source

INTERRELATION OF CHANGES IN CONCENTRATION OF LEPTIN AND ω-3 FAMILY ACIDS IN THE PLACENTA AT THE REACTIVATION OF CYTOMEGALOVIRUS INFECTION IN THE III TRIMESTER OF HUMAN PREGNANCY

Acta Biomedica Scientifica, 2017
A gas-chromatographic study was conducted of the content of essential polyunsaturated fatty acids of the ω-3 family: eicosapentaenoic and docosahexaenoic, an enzyme-linked immunosorbent assay of leptinin the homogenate of placental tissue in women who ...
N. A. Ishutina, M. T. Lutsenko, I. A. Andrievskaya, N. N. Dorofienko   +3 more
doaj   +1 more source