Search results for "Agricultural Science"
showing 10 items of 901 documents
Projet BILAG : une bibliométrie de la littérature scientifique mondiale sur les légumineuses à graines pour comprendre la dynamique de la recherche s…
2018
Quel poids ont les différentes disciplines scientifiques dans la recherche mondiale sur les légumineuses à graines ? Quelles sont les espèces les plus étudiées et sur quels sujets ? Comment évoluent les champs de connaissance de la recherche sur les légumineuses à graines ? Quels champs de connaissances émergent et se restructurent ? Quelle est la place des différents instituts de recherche dans ce maillage, et tout particulièrement ceux des pays francophones ? Pour répondre à ces questions, un groupe d'experts interdisciplinaires sur les légumineuses et d'ingénieurs de l'information scientifique, a moissonné/collecté un corpus d'articles scientifiques sur les légumineuses à graines (telles…
The role of biotic interactions in a prey-predator system : the case of predation and regulation of weed seeds by carabids.
2020
For the transition towards agricultural production systems that are less dependent on herbicides, the use of weed regulation by seed-eating carabids is of great interest. Weed seed predation by carabids is variable and occurs within a complex context of many biotic interactions. This complexity partly explains our current inability to predict levels of in-field weed regulation. In this thesis, I analysed variations in the levels of predation and biological regulation of weeds and determined how they respond to two classes of biotic interactions: 1) the availability of alternative prey; and, 2) intra- and inter-specific interactions between the carabids themselves. Field measurements carried…
Protein S-nitrosylation: What's going on in plants?
2012
International audience; Nitric oxide (NO) is now recognized as a key regulator of plant physiological processes. Understanding the mechanisms by which NO exerts its biological functions has been the subject of extensive research. Several components of the signaling pathways relaying NO effects in plants, including second messengers, protein kinases, phytohormones, and target genes, have been characterized. In addition, there is now compelling experimental evidence that NO partly operates through posttranslational modification of proteins, notably via S-nitrosylation and tyrosine nitration. Recently, proteome-wide scale analyses led to the identification of numerous protein candidates for S-…
10 situations pédagogiques pour enseigner l’élevage de précision
2022
Le développement de l’ère numérique est en marche en agriculture, dans le cadre de l’élevage de précision en particulier. Ses enjeux sont immenses sur le plan professionnel, ils irriguent forcément le secteur de la formation.Cet ouvrage permet d'aborder l'élevage de précision dans l'enseignement agricole à partir, tout d'abord, d'exemples emblématiques de tâches zootechniques s'appuyant sur plusieurs espèces animales. Ces exemples font l'objet de la première partie de l'ouvrage, consacrée aux aspects biologiques et technologiques : il s'agit, à travers eux, de faire le lien entre la problématique zootechnique et les possibilités de monitoring en diversifiant les exemples de capteurs/technol…
Survival of Listeria monocytogenes in Soil Requires AgrA-Mediated Regulation
2015
ABSTRACT In a recent paper, we demonstrated that inactivation of the Agr system affects the patterns of survival of Listeria monocytogenes (A.-L. Vivant, D. Garmyn, L. Gal, and P. Piveteau, Front Cell Infect Microbiol 4:160, http://dx.doi.org/10.3389/fcimb.2014.00160 ). In this study, we investigated whether the Agr-mediated response is triggered during adaptation in soil, and we compared survival patterns in a set of 10 soils. The fate of the parental strain L. monocytogenes L9 (a rifampin-resistant mutant of L. monocytogenes EGD-e) and that of a Δ agrA deletion mutant were compared in a collection of 10 soil microcosms. The Δ agrA mutant displayed significantly reduced survival in these b…
Des souris, des vaches, des odeurs et des hommes
2022
Les animaux, dotés d’organes sensoriels différents des nôtres, ne perçoivent pas le monde de la même façon que nous. Si notre sensorialité est à dominante audiovisuelle, l’olfaction prévaut autant que la vision et l’audition chez la plupart des autres mammifères. Afin de vivre au mieux avec les animaux qui nous entourent, que ce soit nos animaux de compagnie ou ceux d’élevage, il est nécessaire de comprendre les bases sensorielles de la relation homme-animal. Pour cela se pose la question de la contagion des émotions de l’homme vers l’animal, mais également de l’animal vers l’homme, afin de respecter voire d’améliorer leur bien-être, mais également le nôtre...
Soil erosion modelling: A bibliometric analysis.
2021
16 Pags.- 12 Figs.- 8 Tabls.
Soil erosion modelling: a global review and statistical analysis
2021
40 Pags.- 10 Figs.- 2 Tabls.- Suppl. Informat. The definitive version is available at: https://www.sciencedirect.com/science/journal/00489697
Impact of wheat straw decomposition on successional patterns of soil microbial community structure
2009
International audience; The dynamics of indigenous bacterial and fungal soil communities were followed throughout the decomposition of wheat straw residue. More precisely, such dynamics were investigated in the different soil zones under the influence of decomposing wheat straw residue (i.e. residues, soil adjacent to residue = detritusphere, and bulk soil). The genetic structures of bacterial and fungal communities were compared throughout the decomposition process long by applying B- and F-ARISA (for bacterial and fungal-automated ribosomal intergenic spacer analysis) to DNA extracts from these different zones. Residue decomposition induced significant changes in bacterial and fungal comm…
Impact of inoculation with the phytostimulatory PGPR Azospirillum lipoferum CRT1 on the genetic structure of the rhizobacterial community of field-gr…
2009
International audience; The phytostimulatory PGPR Azospirillum lipoferum CRT1 was inoculated to maize seeds and the impact on the genetic structure of the rhizobacterial community in the field was determined during maize growth by Automated Ribosomal Intergenic Spacer Analysis (ARISA) of rhizosphere DNA extracts. ARISA fingerprints could differ from one plant to the next as well as from one sampling to the next. Inoculation with strain CRT1 enhanced plant-to-plant variability of the ARISA fingerprints and caused a statistically significant shift in the composition of the indigenous rhizobacterial community at the first two samplings. This is the first study on the ecological impact of Azosp…