Extensive uranium groundwater contamination at DOE’s legacy ore processing sites has resisted extensive remediation attempts. One of these sites lies within the upper Colorado River Basin. The sediments here are referred to as naturally reduced zones (NRZs) because they are generally nutrient-poor and have abundant iron sulfide minerals. There is concern that NRZs are acting… [Read More]

Poplars and pines have been plant flagship agro-forestry crops for bioenergy production, resulting in large amount of resources being devoted to its production and improvement. One of the most important threats to the sustainable growth of trees in plantation is attack by pathogens. Two important aspects in preventing outbreaks are early detection, monitoring and surveillance…. [Read More]

Fungi inhabit most of the world’s ecological niches where they perform numerous services that are central to ecosystem functioning. Despite significant advancements in our understanding of the evolutionary relationships within Kingdom Fungi, the earliest diverging events are still very poorly understood. Resolving the earliest branches in the Kingdom Fungi is essential to identify the characteristics… [Read More]

Temperature is one of the most important abiotic determinants of the vitality, viability and distribution of life forms and therefore the biology of cold-adapted organisms is of broad general interest. As polar temperatures rise, the permanent frozen portion of the Arctic is shrinking, as is the geographical region with a summer average of 10ºC, which… [Read More]

Aspergilli are generalist species that are able to consume a broad range of substrates. In contrast, species such as P. anserina are much narrower in their substrate utilization profile, which correlates with its biotope on herbivore dung. The soil fungus T. reesei is an intermediate species, which has a broader biotope range than P. anserina,… [Read More]

Secondary metabolites are a heterogeneous group of natural compounds that are considered to aid the producing organism in survival and basic functions. Trichoderma spp. are known to produce over 200 secondary metabolites, of which many have been found to have biological activity on plants, microbes and substrates. Among these metabolites, polyketides have important biological activities… [Read More]

Mycorrhizal fungi usually transfer nitrogen and phosphorus to plants, and receive carbohydrates. However, the orchid mycorrhizal symbiosis is unique because the mycorrhizal fungi transfer carbon to the plant, at least during early developmental stages. All orchids are dependent on fungi for seed germination and form mycorrhizae with basidiomycete fungi. These mycorrhizal fungal species are primarily… [Read More]