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15 results for “French History”
FIG. 7. — A in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 7. — A, geographical distribution of cyanobacterial strains isolated around the world; B, strains isolated in the different administrative districts of France (metropolitan and overseas). Number of cyanobacterial strains in black, number of eukaryotic strains in blue. Strains isolated in France represent 58.0 % and 98.4 % of cyanobacterial and eukaryotic strains, respectively, in the collection.
FIG. 10 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 10. — Culture of Onychonema filiforme (MNHN-ALCP-0000-086.1): A, from the 1948 catalogue of the algotheca (photo: R. Lami); B, the same culture observed in 2021 (photo: M. Jarno).
FIG. 5 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 5. — Relative abundances of the different orders among the 1010 live strains represented in the cyanobacteria collection (left) and of the different phyla among the 345 live strains represented in the eukaryotic microalgae collection (right).
FIG. 6 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 6. — Morphological diversity of cyanobacterial strains:A, B, Pseudochroococcus couteii (MNHN-PMC-2014-885); C, D, Planktothrix agardhii (MNHN-PMC-2002-75); E, F, Aphanizomenon gracile (MNHN-PMC-2010-627); G, H, Haloleptolyngbya elongata (MNHN-PMC-2015-895). Abbreviations: ae, aerotope; cc, cross-walls; cy, cyanophycin granules; cw, cell wall; mu, mucilage; r, reserves; s, sheath; tz, transparent zone; t, thylakoids. A, C, E, G: light microscopy; B, D, F, H: TEM micrographs. Scale bars: A, C, E, G, 10 µm; B, D, F, H, 500 nm.
FIG. 4 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 4. — Emission spectra produced by Cool Daylight FLUO MAZDA (red) and White LEDs SLV (blue), both at a 85 μmol.m-2.s-1 (PAR) irradiance.
FIG. 1 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 1. — From left to right: Pierre Allorge (1891-1944), Marcel Lefèvre (1897-1975) & Pierre Bourrelly (1910-1995).
FIG. 2 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 2. — The "algothèque" in the Cryptogamy laboratory of the French National Museum of Natural History in Paris in 1935 and in 2021.
FIG. 3 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 3. — Phylogeny of the 265 cyanobacterial strains for which a 16S rRNA sequence was obtained (see Appendix 1 for Genbank accession numbers and PMC identifiers). Phylogenetic reconstruction was based on Maximum likelihood with a GTR+G+I Model (5 categories and invariants) based on 1284 nucleotide positions, values at nodes were based on 100 bootstrap replicates. The number of strains (OTUs) is added when more than a single strain is available.
FIG. 8. — A, B in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 8. — A, B, Staurastrum polytrichum (MNHN-ALCP-2019-823.2), solitary cells with very deep median constriction (isthmus) dividing the cell into two semicells or hemisomates. SEM images show triangular semicells in apical view with straight sides, broadly rounded angles and many inframarginal spines (sp). Cell surface ornemented with pores. C, D, Cosmarium connatum (MNHN-ALCP-2019-832.1), solitary cells, lateral view with a barely marked isthmus (i) and smooth cell wall with pores. E, F, Synura petersenii (MNHN-ALCP-2019-877.3), colony and scales morphology. SEM images show rows of silica scales around individual cells. Scales with well-developed thorns (t). Ribs (r) running from the thorn to the scale perimeter up to the outer rim. G, H, Micrasterias furcata (MNHN-ALCP-2019-821.5), solitary cells, deeply constricted and dorsiventrally compressed. Semicells dissected into a polar lobe (p) divided into the second order. Lateral lobes (l) themselves divides into second and third order (or many times) ending with two simple spines (s). A, C, E, G: light microscopy; B, D, F, H: SEM micrographs. Scale bars: A, C, E, G, 20 µm; B, D, F, H, 10 µm.
FIG. 9 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 9. — Example of morphological diversity among eukaryotic algae strains from ALCP collection: A, Centronella reicheltii (MNHN-ALCP-2020-884.1); B, Euglena gracilis (MNHN-ALCP-0000-006.3); C, Gymnodinium sp. (MNHN-ALCP-2019-879.1); D, Synura petersenii (MNHN-ALCP-2019-877.3); E, Chlorobotrys sp. (MNHN-ALCP-0000-003.1); F, Porphyridium purpureum (MNHN-ALCP-0000-100.2); G, Stigeoclonium sp. (MNHN-ALCP-2019-854.1); H, Oedogonium sp. (MNHN-ALCP-2019-867.1); I, Gonium formosum (MNHN-ALCP-2019-819.1); J, Haematococcus pluvialis (MNHN-ALCP-2019-876.1); K, Kirchneriella lunaris (MNHN-ALCP-0000-073.1); L, Monoraphidium sp. (MNHN-ALCP-2019-822.1); M, Dictyosphaerium pulchellum (MNHN-ALCP-2019-865.1); N, Picocystis salinarum (MNHN-ALCP-2018-144.1); O, Staurastrum sp. (MNHN-ALCP-2019-836.1); P, Spirogyra sp. (MNHN-ALCP-2019-858.1). Scale bars: 20 μm.
FIG. 11 in The culture collection of cyanobacteria and microalgae at the French National Museum of Natural History: a century old but still alive and kicking! Including in memoriam: Professor Alain Couté
FIG. 11. — An "algaegraphie" by the artist Lia Giraud representing one co-author, Claude Yéprémian (curator from 2007 to 2019).
The effects of land-use history and the contemporary landscape on non-native plant invasion at local and regional scales in the French Broad Watersheds, 2007
Determining what factors explain the distribution of non-native invasive plants that can spread in forest-dominated landscapes could advance understanding of the invasion process and identify forest areas most susceptible to invasion. The researchers conducted roadside surveys to determine the presence and abundance of 15 non-native plant species known to invade forests in western North Carolina, USA. Prior to sampling, the researchers identified 15 non-native invasive plant species that were of concern in the study region. Generalized linear models were used to examine how contemporary and historic land use, landscape context, and topography influenced presence and abundance of the species at local and regional scales.
Data from: Insights into the genetic history of French cattle from dense SNP data on 47 worldwide breeds
BACKGROUND: Modern cattle originate from populations of the wild extinct aurochs through a few domestication events which occurred about 8,000 years ago. Newly domesticated populations subsequently spread worldwide following breeder migration routes. The resulting complex historical origins associated with both natural and artificial selection have led to the differentiation of numerous different cattle breeds displaying a broad phenotypic variety over a short period of time. METHODOLOGY/PRINCIPAL FINDINGS: This study gives a detailed assessment of cattle genetic diversity based on 1,121 individuals sampled in 47 populations from different parts of the world (with a special focus on French cattle) genotyped for 44,706 autosomal SNPs. The analyzed data set consisted of new genotypes for 296 individuals representing 14 French cattle breeds which were combined to those available from three previously published studies. After characterizing SNP polymorphism in the different populations, we performed a detailed analysis of genetic structure at both the individual and population levels. We further searched for spatial patterns of genetic diversity among 23 European populations, most of them being of French origin, under the recently developed spatial Principal Component analysis framework. CONCLUSIONS/SIGNIFICANCE: Overall, such high throughput genotyping data confirmed a clear partitioning of the cattle genetic diversity into distinct breeds. In addition, patterns of differentiation among the three main groups of populations—the African taurine, the European taurine and zebus—may provide some additional support for three distinct domestication centres. Finally, among the European cattle breeds investigated, spatial patterns of genetic diversity were found in good agreement with the two main migration routes towards France, initially postulated based on archeological evidence.
Validation of the French Translation of a Self-questionnaire Looking for a History of Pre-eclampsia.
ClinicalTrials.gov study NCT04658966. IPD Sharing: YES. Countries: 1. Publications: 6.
Data from: Insights into the genetic history of French cattle from dense SNP data on 47 worldwide breeds
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