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A virus (from the Latin word ‘vīrus’ meaning ‘venom’ or ‘poison’) is a microorganism invisible to the naked eye. Viruses can multiply exclusively by entering a cell and using the cell’s resources to create copies of themselves. As the origin of their name suggests, viruses are generally considered dangerous, harmful and often deadly. Some of the most well-studied and widely known viruses, such as HIV and influenza, infect humans. However, viruses can also infect animals, plants and microorganisms, including fungi. Many fungi are medically, ecologically and economically significant, for example, causing diseases to humans, plants and insects or being used in industry to produce...
Ectomycorrhizal fungi play multifunctional roles during symbioses with higher plants. They can serve as bioprotectors, biofertilizers, bioremediators and stress indicators. Further, they are the true “mycoindicators” of forest ecosystems, where an enormous diversity of ectomycorrhizal fungi can be found. Some ectomycorrhizal fungi also produce edible sporocarps, i.e., fruiting bodies, which are important for the food industry. Ectomycorrhizal fungi also produce various metal chelating molecules, which are of remarkable biotechnological significance and which also secrete useful secondary metabolites. Molecular approaches are required for the identification and differentiation of fungi forming symbioses with higher plants, while molecular tools are important to understand how genes are expressed during symbiosis with higher plants. Students, researchers and teachers of botany, mycology, microbiology, forestry, and biotechnology will find a valuable source of information in this Soil Biology volume.
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Throughout Egypt’s long history, pottery sherds and flakes of limestone were commonly used for drawings and short-form texts in a number of languages. These objects are conventionally called ostraca, and thousands of them have been and continue to be discovered. This volume highlights some of the methodologies that have been developed for analyzing the archaeological contexts, material aspects, and textual peculiarities of ostraca.
Discusses life in ancient Egypt, with an overview and timeline of the years between 3050 and 30 B.C., and looks at agriculture, belief systems, art, health, the role of women and children, rulers, war, and other aspects of life along the Nile.