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| Rousseaux, S.; Hartmann, A.; Rouard, N.; Soulas, G.. |
| We have studied the structural effects of application to the soil of a potentially detrimental herbicide, 4,6-dinitroorthocresol (DNOC) by analysing amplified ribosomal DNA restriction analysis (ARDRA) and terminal restriction fragment length polymorphism (T-RFLP) signatures of 16S rDNA fragments of culturable bacterial communities isolated from diluted soil suspensions. This approach has the potential to reveal changes induced by stressing the soil microflora with DNOC. This paper shows that, whereas only few changes of the ARDRA and T-RFLP profiles result from ageing of the soil, treatment of the soil with DNOC induces major modifications of these profiles. Therefore, for the practical purpose of pesticide registration, ARDRA and T-RFLP analysis... |
| Tipo: Journal Article |
Palavras-chave: 4 6-DINITROORTHOCRESOL; COMMUNAUTE MICROBIENNE; RFLP. |
| Ano: 2003 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0400035298104675&uri=/notices/prodinra1/2010/12/ |
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| Chèneby, D.; Hartmann, A.; Hénault, C.; Topp, E.; Germon, J.C.. |
| The ozone-depleting gas N2O is an intermediate in denitrification, the biological reduction of NO3 – to the gaseous products N2O and N2 gas. The molar ratio of N2O produced (N2O/N2O+N2) varies temporally and spatially, and in some soils N2O may be the dominant end product of denitrification. The fraction of NO3 –-N emitted as N2O may be due at least in part to the abundance and activity of denitrifying bacteria which possess N2O reductase. In this study, we enumerated NO3 –-reducing and denitrifying bacteria, and compared and contrasted collections of denitrifying bacteria isolated from two agricultural soils, one (Auxonne, soil A) with N2O as the dominant product of denitrification, the other (Châlons, soil C) with N2 gas as the dominant product.... |
| Tipo: Journal Article |
Palavras-chave: IDENTIFICATION; REDUCTASE; DENITRIFICATION; RFLP. |
| Ano: 1998 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9900033420073695&uri=/notices/prodinra1/2010/12/ |
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| Hackl, E.; Sessitsch, A.; Arthurson, V.; Baggesen, D.L.; Dalsgaard, A.; Friedel, J.K.; Hartmann, A.; Koller, M.; van Bruggen, A.H.C.; Widmer, F.; Wyss, G.; Zijlstra, C.A.. |
| PathOrganic assesses risks associated with the consumption of fresh and minimally processed vegetables due to the prevalence of bacterial human pathogens (e.g. Salmonella enterica, pathogenic E. coli, Campylobacter spp., Listeria monocytogenes) in organically grown plant produce. The project aims at evaluating whether organic production poses a risk on food safety and addresses the food chain by taking into consideration potential sources of pathogen transmission (e.g. animal manure). In addition, it evaluates whether organic production may reduce the risk of pathogen manifestation. From a European perspective, vegetable-linked outbreaks are not well investigated. Within the PathOrganic project, surveys of organically grown vegetables are carried out in... |
| Tipo: Report |
Palavras-chave: Food security; Food quality and human health Vegetables. |
| Ano: 2012 |
URL: http://orgprints.org/21197/1/PathOrganic_final_report_OrgEprints.doc |
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| Bertaux, J.; Schmid, M.; Hutzler, P.; Hartmann, A.; Garbaye, J.; Frey-Klett, P.. |
| Fluorescence in situ hybridization, associated with confocal laser scanning microscopy or epifluorescence microscopy with deconvolution system, has allowed the detection of a community of intracellular bacteria in non-axenic samples of the ectomycorrhizal fungus Laccaria bicolor S238N. The endobacteria, mainly alpha -proteobacteria, were present in more than half of the samples, which consisted of ectomycorrhizae, fungal mats and fruit bodies, collected in the glasshouse or in the forest. Acridine orange staining suggests that the endobacteria inhabit both live and dead fungal cells. The role of these endobacteria remains to be clarified. |
| Tipo: Journal Article |
Palavras-chave: ECTOMYCORHIZE; LACCARIA BICOLOR; MYCELIUM ENDOBACTERIE; CHAMPIGNON. |
| Ano: 2005 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20076a4afaf1&uri=/notices/prodinra1/2007/07/ |
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| Arthurson, V.; Baggesen, D.; Brankatschk, K.; Dalsgaard, A.; Duffy, B.; Fenzl, C.; Friedel, J.K.; Hackl, E.; Hartmann, A.; Hedin, F.; Hofmann, A.; Jäderlund, L.; Jansson, J.; Jensen, A.N.; Koller, M.; Mäder, P.; Rinnofner, T.; Schmid, M.; Storm, C.; van Bruggen, A.H.C.; Widmer, F.; Wyss, G.S.; Zijlstra, C.A.; Sessitsch, A.. |
| PathOrganic assesses risks associated with the consumption of fresh and minimally processed vegetables due to the prevalence of bacterial human pathogens in plant produce. The project evaluates whether organic production poses a risk on food safety, taking into consideration sources of pathogen transmission (e.g. animal manure). The project also explores whether organic versus conventional production practices may reduce the risk of pathogen manifestation. In Europe, vegetable-linked outbreaks are not well investigated. A conceptual model together with novel sampling strategies and specifically adjusted methods provides the basis for large-scale surveys of organically grown plant produce in five European countries. Critical control points are... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Vegetables. |
| Ano: 2009 |
URL: http://orgprints.org/14310/1/Arthurson_14310.pdf |
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