One of the most commonly encountered plant-parasitic nematodes in eastern Washington Vitis vinifera vineyards is Meloidogyne hapla; however, limited research exists on the impact of this nematode on V. vinifera. The objectives of this research were to determine the impact of M. hapla on Chardonnay and Cabernet Sauvignon vine establishment and to determine the host status of V. vinifera varietie...

How do vines climb upward and harvest sunlight? A detailed study of one species (Galium aparine L.) shows that leaf hairs (trichomes) provide one solution that solves both tasks simultaneously.

The potential coupling of nitrogen (N2) fixation and sulfate reduction (SR) was explored in sediments of the Peruvian oxygen minimum zone (OMZ). Sediment samples were retrieved by a multiple corer at six stations along a depth transect (70–1025 m water depth) at 12 S, covering anoxic and hypoxic bottom water conditions. Benthic N2 fixation, determined by the acetylene reduction assay, was detec...

Lifetimes of the upper states excited oxygen atoms corresponding to transitions common lower state in case emission lines around 777 nm and 844 have been estimated by measuring line intensities as a function delay time between Q-switching laser opening window ICCD. In nm, resulting from three very closely spaced energy levels, 2s2 2p3 (4S0) 3p5P3 (777.194 nm), 3p5P2 (777.417 nm) 3p5P1 (777.539 ...

Road transport is a ubiquitous source of lead contamination in the soil near highways with direct and indirect impacts on human health. Accumulation of traffic-induced lead in the soils depends on gasoline lead content, traffic volume, as well as meteorological conditions. To evaluate the effect of traffic on soil lead concentration, 113 samples from the topsoil (0-15 cm) were collected in a re...

The carbapenem-hydrolyzing class D β-lactamase OXA-253 was identified in an Acinetobacter baumannii clinical isolate belonging to sequence type 113 (ST113) in Brazil. OXA-253 shares 93.8% amino acid identity with OXA-143. The blaOXA-253 gene is located on a ca. 20-kb plasmid. The genetic environment of the blaOXA-253 gene shares the highest identity with ubiquitous GR2 group plasmids usually ca...

10 We studied the concurrence of methanogenesis and sulfate reduction in surface sediments (0-25 cm 11 below seafloor) at six stations (70, 145, 253, 407, 990 and 1024 m) along the Peruvian margin (12°S). 12 This oceanographic region is characterized by high carbon export to the seafloor creating an extensive 13 oxygen minimum zone (OMZ) on the shelf, both factors that could favor surface metha...