Search results for "microorganism"
showing 10 items of 449 documents
Scientific Opinion addressing the state of the science on risk assessment of plant protection products for in‐soil organisms
2017
Abstract Following a request from EFSA, the Panel on Plant Protection Products and their Residues developed an opinion on the science behind the risk assessment of plant protection products for in‐soil organisms. The current risk assessment scheme is reviewed, taking into account new regulatory frameworks and scientific developments. Proposals are made for specific protection goals for in‐soil organisms being key drivers for relevant ecosystem services in agricultural landscapes such as nutrient cycling, soil structure, pest control and biodiversity. Considering the time‐scales and biological processes related to the dispersal of the majority of in‐soil organisms compared to terrestrial non…
Denitrification
2011
Infective Endocarditis: Preliminary Results of a Cohort Study in the Southern Italian Population.
2020
Background Infective endocarditis (IE) is an uncommon disease with an involved interplay of clinical and surgical team management. We aimed to define diagnosis parameters and delineate in-hospital management in patients with IE admitted in a tertiary hospital of Southern Italian. Materials and methods Fifty-six consecutive patients (42 males, 14 females; age range: 34-85 years) admitted for IE in the Infectious Diseases, Cardiac Surgery, and Cardiology units, between January 2011 and August 2017, were enrolled. Demographic data, mortality, comorbidities, specimen type, microscopy results, special histological staining performed, and antimicrobial therapy were collected and analyzed. Any com…
Survie et/ou réactivation de microorganismes du sol sous hautes pressions gazeuses
2012
National audience; Le sol constitue une réserve considérable de microorganismes représentatifs de nombreuses communautés cellulaires. Les recherches reposent sur l’hypothèse qu’il existe, dans les échantillons de sol, des communautés microbiennes adaptées à des conditions physiques (pression, température) très différentes de celles rencontrées dans nos laboratoires : soit parce que les conditions de milieu ont changé (sol), soit parce que les conditions de prélèvement sont très différentes des conditions de culture (grands fonds marins). Dans cette optique, l’utilisation des hautes pressions gazeuses (200-1000 bars dans un premier temps) est envisagée afin d’essayer de réactiver des microor…
Un microorganisme per a cada ocasió
2013
Els qui treballem en microbiologia no podem queixar-nos de ser particularment incompresos pel públic en general: a diferència del bosó de Higgs, la teoria de les cordes o la prima de risc, tothom té una idea relativament acurada de què és un bacteri. Per si de cas, donem algunes dades sobre els microorganismes: són formes de vida unicel·lulars; amb tota probabilitat les primeres formes de vida a aparèixer sobre el nostre planeta; són molt menuts (l’espessor d’una ungla i un bacteri són, proporcionalment, com el Grand Canyon i un humà) i hi són pertot arreu. Hi ha espores fúngiques i bacteris a l’aire, a l’aigua, al sòl i damunt tots els éssers vius. Estem literalment coberts per bacteris, d…
Listeria monocytogenes
2017
Prod 2017-266 équipe EA UB BIOME; National audience; résumé du livre : Pour garantir et maîtriser la sécurité microbiologique des aliments et prévenir les crises sanitaires alimentaires, la connaissance et la surveillance des microorganismes pathogènes depuis la production primaire jusqu’à la distribution des denrées alimentaires en passant par la transformation, sont indispensables. Cet ouvrage de référence traite des dangers microbiologiques alimentaires majeurs (microorganismes infectieux ou toxines d’origine microbienne) et des risques associés pour l’Homme. Illustré de nombreux schémas et tableaux de synthèse, il fait un point complet sur les notions fondamentales de microbiologie géné…
Effect of iron-porphyrin treatment on soil microbial communities
2009
Intensive agricultural management have led to an increasing transfer of carbon from soil organic matter (SOM) to atmospheric CO2. It is noteworthy that the flux of CO2 from the soil is ten times greater than fossil fuel emission from industrial and automotive activities. Piccolo and co-workers (1999) suggested that hydrophobic humic components in soil exerted hydrophobic protection towards easily degradable compounds. They postulated that associations of apolar molecules deriving from plant degradation and microbial activity incorporate more polar molecules, thus preventing their otherwise rapid microbial degradation and enhancing their persistence in soil. Moreover, synthetic metal-porphyr…
Effect of agricultural practices on soil microbial communities
2008
Soil carbon sequestration is an important and immediate sink for removing atmospheric carbon dioxide and slowing global warming. Agricultural practices strongly impact CO2 emission from the soil and the loss of soil organic matter is lower when “no-till” agriculture is practiced. The present work was performed in order to investigate effects of different agricultural practices on soil microbial communities. Field experiments took place at three Italian locations strongly differing in pedological, chemical and climatic characteristics: Naples, Turin and Piacenza. Soils were subjected to four management practices such as traditional (TRA), minimum tillage (MIN) and amendments with compost (CO…
Refreigerated storage of raw milk for Trentingrana production: microbiological effects
2008
Identification et caractérisation de candidats d’origine naturelle à action herbicide pour contrôler les adventices
2016
EASPEIPMGESTADAGROSUPINRA; The use of herbicides to control weeds is very common. However, some herbicides are both environmentally detrimental and human unhealthy. The use of microorganisms acting as natural herbicide could be an alternative control method. Symptomatic weeds will be collected in field. Microorganisms will be isolated from symptomatic weeds, purified, identified and inoculated on weeds to confirm Koch’s postulates. The identified pathogenic microorganisms will be tested against a selection of weeds and crops to characterize the host range and the specificity of these microorganisms. In parallel, the diversity of endophytic microorganisms of symptomatic weeds will be charact…