1. A highly purified sporopollenin fraction from Corylus avellana pollen was obtained using a gentle method employing hydrolyzing enzymes (pronase, lipase, cellulase, amylase, cellulysin) and an exhaustive extraction using different solvents. 2. The sporopollenin fractions were degraded by potash-fusion and nitrobenzene oxidation and the low molecular decomposition products were analyzed by TLC...

Population-level studies of how tit species (Parus spp.) track the changing phenology of their caterpillar food source have provided a model system allowing inference into how populations can adjust to changing climates, but are often limited because they implicitly assume all individuals experience similar environments. Ecologists are increasingly using satellite-derived data to quantify aspec...

Aim.The use of molecular genetic analysis tools requires DNA preparations high purity. However, in the case hazelnut plants (Corylus spp.), obtaining quality is complicated by presence a significant amount secondary metabolites leaf tissue. The aim study was to select and optimize method for isolation purification further PCR analysis. Methods. Three methods using cetavlon as detergent were use...

Pinoresinol and syringaresinol: two lignans from Avicennia germinans (Avicenniaceae) Hazel Sharp, David Thomas, Felicity Currie, Colin Bright, Zahid Latif, Satyajit D. Sarker*, Robert J. Nash MolecularNature Limited, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK Pharmaceutical Sciences Section, School of Pharmacy, The Robert Gordon University, Schoolhill, Aberdeen AB10 1FR, Scotland, UK ...

Scatter hoarders must allocate time to assess items for caching, and to carry and bury each cache. Such decisions should be driven by economic variables, such as the value of the individual food items, the scarcity of these items, competition for food items and risk of pilferage by conspecifics. The fox squirrel, an obligate scatter-hoarder, assesses cacheable food items using two overt movemen...

This study compares phenological observations of Corylus (hazel) and Alnus (alder) flowering with airborne pollen counts of these taxa recorded using volumetric spore traps (2009-2011). The work was carried out in the Polish cities of Szczecin and Rzeszów that are located in different climatic regions. Correlations between pollen concentrations and meteorological data were investigated using Sp...