Quercus is considered economically and ecologically one of the most important genera in the Northern Hemisphere. Oaks are taxonomically perplexing because of shared interspecific morphological traits and intraspecific morphological variation, which are mainly attributed to hybridization. Universal plastid markers cannot provide a sufficient number of variable sites to explore the phylogeny of t...

Background: Various herbal products are being tried to treat common ailments. Such a trend is witnessed in dentistry also. gall extract of Quercus infectoria has been found to possess antibacterial properties against some common oral pathogens. Aim: to assess the antibacterial property and minimum inhibitory concentration (MIc) of gall extract of Quercus infectoria against Enterococcus faecalis...

Freshwater ecosystems are positioned at low levels in the landscape and receive large inputs of diverse plant-based detritus, a major source of energy for consumers in aquatic ecosystems. We conducted field experiments in Urbana, IL to determine the independent and combined effects of leaves of common tree species including the northern red oak (Quercus rubra L.), sugar maple (Acer saccharum M...

1. It is generally believed that warmer climate forests suffer more herbivory, as a proportion of leaf area, than cooler climate forests. However, standardized studies using the same methodology have rarely been performed. 2. We carried out a study on scattered forest-edge populations of four widespread tree species (Quercus alba,Acer rubrum, Fagus grandifolia and Liquidambar styraciflua) spann...

In this article, we discuss the effects of long-term (17 months) aluminum (Al) treatment on the growth, root respiration rate, nutrient uptake rate, and photosynthetic activity of two-year-old Quercus serrata Thunb. seedlings. The seedlings were cultivated by supplying a nutrient solution with or without Al twice a week for 17 months in siliceous sand. After 5- and 17-month treatments, growth, ...

Materials and Methods ― Fodder and fecal samples were collected from 3 groups of 3 goats, browsing ad lib on fresh leafy Quercus pubescens branches. The 3 groups were made up of: 3 dried-up animals without supplementation; 3 lactating animals, supplemented with a urea-molasses mixture, in a digestibility cage (Meuret, 1988); and 3 lactating animals compelled to eat a pure 0 pubescens die...

Leaves of oak trees are often infected by various pathogenic fungi. As it is difficult to remove such organisms quantitatively from the leaf surface and as it is often impossible to grow these organisms independently from their host, there are almost no molecular data available from these oak leaf specific pathogens. For the quantitative removal of the microorganisms a procedure was developed c...