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September 7, 2016

How Fungi Help Trees Tolerate Drought

The crosscut shows the fungal tissues - the fungal mantle around the root tip and the the fungal network of tendrils that penetrates the root of plants, or Hartig Net, between Pinus sylvestris plant root cells - in green. (Image by Maira de Freitas Pereira, INRA Nancy.)Genome of world’s most common fungal symbiont sheds light on drought resistance role The mutualistic relationship between tree roots and ectomycorrhizal (ECM) fungi has been shaping forest ecosystems since their inception. ECM fungi are key players supporting the growth, health and stress tolerance of forest trees globally, such as oak, pine, spruce, birch and beech,… [Read More]

September 6, 2016

10 New Projects to be Supported Under Joint DOE User Facility Initiative

This diagram from Petr Baldrian’s proposal shows the seasonal differences in the carbon cycle processes in the temperate and boreal coniferous forests. During vegetation seasons, depicted by September on the left, photosynthesis products are allocated to soil via tree roots. When photosynthesis stops in winter, depicted by March on the right, decomposition is the most important carbon cycle process. (Image courtesy of Petr Baldrian)The U.S. Department of Energy Joint Genome Institute (DOE JGI) and the Environmental Molecular Sciences Laboratory (EMSL) have accepted 10 projects submitted during the 2017 call for proposals for their joint “Facilities Integrating Collaborations for User Science” (FICUS) initiative. These new research projects all involve collaboration between two user facilities that are stewarded by the DOE Office… [Read More]

September 6, 2016

Microbial Metabolism Impacts Sustainability of Fracking Efforts

This is not one of the wells used in the study, but it shows what a site looks like during the drilling process. (Image courtesy of the MSEEL (Marcellus Shale Energy and Environment Laboratory www.mseel.org), where the Wrighton Lab is also conducting research.)Team finds surface microbes are colonizing the deep subsurface. The Science Through a collaborative science program involving two DOE national user facilities, DOE-supported researchers have been able to reconstruct microbial genomes for the first time from shale formations that are being drilled to extract natural gas. Coupled with microbial metabolic information, the data shed light… [Read More]

August 17, 2016

Unveiled: Earth’s Viral Diversity

virome-graphic_art-by-Z-Rostomian-LBNLEnvironmental datasets help researchers double the number of microbial phyla known to be infected by viruses. The number of microbes in, on, and around the planet – on the order of a nonillion, or 1030 – is estimated to outnumber the stars in the Milky Way. Microbes are known to play crucial roles in regulating… [Read More]

August 15, 2016

Expanding the Stable of Workhorse Yeasts

One of the genomes sequenced for this study was of the yeast Scheffersomyces stipitis. (Courtesy of Tom Jeffries, University of Wisconsin-Madison)New genome sequences target next generation of yeasts with improved biotech uses The yeast Saccharomyces cerevisiae was a part of human civilization before history was recorded. It is essential for making bread, beer and wine, and it is ubiquitous. It is not, however, typical of the more than 1,500 yeast species found around the world…. [Read More]

August 4, 2016

Identifying the Microbial Culprits Initiating Oceanic Nitrogen Loss

In the Nature paper, the team found functional nitrate reductase pathways, shown on the left-hand side of the nitrogen cycle, in SAR11 microbes. (Nitrogen cycle graphic by Zosia Rostomian, Berkeley Lab)Novel lineages of SAR11 clade reveal adaptations to oxygen-poor ocean zones. The Science Oxygen minimum zones (OMZs) extend over about 8 percent of the oceanic surface area, but account for up to 50 percent of the total loss of bioavailable nitrogen and thus play an important role in regulating the ocean’s productivity by substantially impacting… [Read More]

July 19, 2016

Comparing Fungal Secretions to Uncover Carbon Compound Degradation Pathways

Pyrenochaeta sp. DS3sAY3a growing in liquid culture. As the fungus grows, brown-colored manganese oxides are formed. Here, the oxides can be seen associated with biomass and suspended in solution. (Carolyn Zeiner)Their unassuming appearances may cause them to be overshadowed by the plants or animals in their natural habitats, but fungi play key roles in maintaining their ecosystems. From breaking down leaf litter and decaying wood in forests to cleaning contaminated soils and waters, fungal enzymes are being characterized for potential use in a wide variety… [Read More]

June 28, 2016

See and Sort: Developing Novel Techniques to Visualize Uncultured Microbial Cell Activity

AOM consortia oxidizing methane seen using BONCATNew high-throughput and cost-effective approaches provide a better understanding of microbiome functioning Many uncultured microbes play unknown roles in regulating Earth’s biogeochemical processes; everything from regulating plant health to driving nutrient cycles in both terrestrial and marine environments, processes that can impact global climate. While researchers are harnessing multiple approaches to identify these microbes, referred to… [Read More]

June 20, 2016

Insights into How Soil Microbes Regulate Carbon & Sulfur Cycling

German fen with Phragmites australis by Paul Schulze, CC-BY 4.0 (https://www.flickr.com/photos/paulschulze/14351953065/)Researchers find rare sulfate reducers substantially affect methanogenesis in peatlands. The Science Utilizing microcosms of peat soil, researchers mimicked naturally fluctuating conditions to study sulfate-reducing microbes and how they regulate methane production in peat microbial communities. The Impact Numbers by themselves don’t tell the whole story. Microbes found in low abundance can play key roles… [Read More]

May 26, 2016

Cuing Environmental Responses in Fungi

Phycomyces from CSP LCorrochano University of Seville SpainGenome sequences provide clues to the evolution of sensory perception Fungi can sense environmental signals and react accordingly, changing their development, direction of growth, and metabolism. Sensory perception lies at the heart of adaptation to changing conditions, and helps fungi to improve growth and recycle organic waste, and to know when and how to infect… [Read More]
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