Environmental Effect on New Released Genotypes of Graminaceous and Leguminous Forage Perennial Crops

Genotypes of perennial leguminous (alfalfa) and graminaceous (cocksfoot and tall fescue) were evaluated for adaptability in a typical Mediterranean environment (Foggia, southern Italy). The species were field evaluated to detect biomass yield potential under different types of watering. Irrigations were applied considering rainfall and FAO cultural growth coefficient for reintegrating the 75% of the evaporated water from Class A water pan. The forage harvest was applied when the shoots of the varieties reached the 10 and 50% of flowering and heading stage for leguminous and graminaceous, respectively. A split-plot experimental design, with irrigation in the main plot, was adopted. The parameters considered were dry matter, stand density, leaf-stem ratio. The preliminary results evidenced a significant difference among treatments. The species and the varieties show a different adaptability to the weather conditions. Alfalfa had higher biomass production than graminaceous while irrigation appears as the main agronomical factor allowings increase of forage yield in the Mediterranean areas

Changes in regional cerebral perfusion over time in idiopathic REM sleep behavior disorder

Background Idiopathic rapid eye movement sleep behavior disorder is associated with increased risk of neurodegeneration, but the temporal evolution of regional perfusion, a marker of cerebral activity, has not been characterized. The objective of the current study was to study longitudinal regional perfusion in patients with idiopathic rapid eye movement sleep behavior disorder. Methods Thirty‐seven patients and 23 controls underwent high‐resolution single‐photon emission computed tomography. After 17 months on average, scans were repeated for idiopathic rapid eye movement sleep behavior disorder patients. We compared regional cerebral blood flow between groups and over time. Results At baseline, patients showed lower relative regional perfusion in the anterior frontal and lateral parietotemporal cortex compared with controls. However, over time, patients showed an increase in relative regional perfusion in the anterior frontal, lateral parietal, and occipitotemporal cortex, reverting toward normal control levels. Conclusions Patients with idiopathic rapid eye movement sleep behavior disorder showed significant areas of relative regional hypoperfusion, which disappeared over time to finally return to average levels, suggesting possible developing compensation in areas affected by neurodegeneration

Common variants at ABCA7, MS4A6A/MS4A4E, EPHA1, CD33 and CD2AP are associated with Alzheimer's disease

We sought to identify new susceptibility loci for Alzheimer's disease through a staged association study (GERAD+) and by testing suggestive loci reported by the Alzheimer's Disease Genetic Consortium (ADGC) in a companion paper. We undertook a combined analysis of four genome-wide association datasets (stage 1) and identified ten newly associated variants with P ≤ 1 × 10−5. We tested these variants for association in an independent sample (stage 2). Three SNPs at two loci replicated and showed evidence for association in a further sample (stage 3). Meta-analyses of all data provided compelling evidence that ABCA7 (rs3764650, meta P = 4.5 × 10−17; including ADGC data, meta P = 5.0 × 10−21) and the MS4A gene cluster (rs610932, meta P = 1.8 × 10−14; including ADGC data, meta P = 1.2 × 10−16) are new Alzheimer's disease susceptibility loci. We also found independent evidence for association for three loci reported by the ADGC, which, when combined, showed genome-wide significance: CD2AP (GERAD+, P = 8.0 × 10−4; including ADGC data, meta P = 8.6 × 10−9), CD33 (GERAD+, P = 2.2 × 10−4; including ADGC data, meta P = 1.6 × 10−9) and EPHA1 (GERAD+, P = 3.4 × 10−4; including ADGC data, meta P = 6.0 × 10−10)

Evolution économique du Japon

Genier-Gillet P. Evolution économique du Japon. In: Politique étrangère, n°6 - 1959 - 24ᵉannée. pp. 622-635

Low-noise visible-near-infrared supercontinuum sources for Optical Coherence tomography applications

International audienc

Teneur en ribulose-1,5-bisphosphate carboxylase/oxygénase des feuilles de luzerne (Medicago sativa L). Facteurs de variation génétiques et agronomiques

On a déterminé, par des dosages immunochimiques, la teneur en ribulose-1,5-bisphosphate carboxylase/ oxygénase (rubisco) de feuilles situées sur la tige principale de plantes ayant atteint le stade «liseré violet». En partant du haut de la tige, cette teneur augmente jusqu'à la feuille à l'aisselle de laquelle est située la première inflorescence au stade «liseré violet» (rang 0) puis décroît régulièrement jusque vers la base de la tige. La teneur en rubisco de la feuille de rang 0 a été déterminée, aux époques de récolte, sur 11 génotypes. Elle ne semble pas corrélée aux teneurs en matière sèche ou en azote de cette feuille mais varie entre 5 et 15% de la teneur en matière sèche selon le cycle de récolte et le génotype. La teneur en rubisco augmente nettement entre le 1 er et le 2e cycle puis reste sensiblement constante du 2e au 4e pour les types méditerranéens. Dans le cas des types flamands, on observe une teneur maximale marquée au 2e ou au 3e cycle.Ribulose-1,5-bisphosphate carboxylase/oxygenase content of alfalfa (Medicago sativa L) leaves. Effects of genotype and cutting stage. The content of ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) has been determined in leaves on the main stem of plants at the late budding stage by an immunochemical method. Starting from the stem top, the content of rubisco increases up to the leaf where the 1st inflorescence at the late budding stage is located (0 level) and then decreases towards the oldest part of the main stem (table I). Rubisco content of the 0 level leaf has been determined at the cutting (late budding) stages in 11 populations of alfalfa (table II, fig 1). Rubisco content varies much more than dry matter or nitrogen, and varies more between cutting stages than between populations (table III). Rubisco content does not seem to be correlated with dry matter or nitrogen content of the 0 level leaf (table IV), but ranges between 5 and 15% of the dry weight, depending on the population and on the cutting stage. The content of rubisco clearly increases from the first to the second cutting stage and remains nearly constant from the second to the fourth cutting stage in mediterranean type populations. With Flemish type populations, a maximum content is noted at the 2nd or 3rd cutting stage (fig 1). There is no simple correlation between these trends and the variations in climatic data (temperature, period of sunshine or radiation energy). Insofar as these results can be extended from a single leaf to the whole crop, they should have general consequences on the structure of plant nitrogen and on the way alfalfa is used for animal feeding, for dehydration or leaf protein extraction

Generation of an ultra-flat, low-noise and linearly polarized fiber supercontinuum covering 670 nm-1390 nm

We report an ultra-flat octave-spanning 670-1390 nm coherent supercontinuum using a femtosecond-pumped all-normal dispersion polarization-maintaining fiber with excellent noise RIN0.54 and polarization properties PER17 dB