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October 27, 2017

Cat Adams, University of California, Berkeley

Cat Adams, UC Berkeley“If we can assemble genomes, we can learn some of these strategies to reduce bias.”   I study the role of secondary metabolites, especially defensive chemistry and how they influence plant-fungal interactions. For my Ph.D., I’m studying a mushroom called Amanita phalloides, the death cap mushroom. It’s native to Europe but it was brought overseas… [Read More]

October 25, 2017

JGI’s Klatu Chills at the North American Freezer Challenge

The JGI Freezer Challenge Team (left to right): Tom Vess, Christine Naca and Don Miller in front of two freezers being monitored by the Klatu system. As part of JGI's efforts to become more sustainable, Stirling freezers like the one on the left are being phased in because they use less than half of the energy consumed by the older freezer on the right.Freezer Preventive Monitoring Program A Model of Berkeley Lab Energy Efficiency Efforts It’s a common scene in popular culture, and it likely plays out in your own home: someone looking for a snack holds the refrigerator door open so long that eventually someone else complains that its cold enough for penguins to migrate from the… [Read More]

October 11, 2017

Tracking the Viral Parasites of Giant Viruses over Time

The team used data from a 3-year metagenomic time series collected from Trout Bog Lake, a smaller acidic bog in Wisconsin. (Image courtesy of Trina McMahon)Virophage database doubles with discovery in freshwater lakes datasets. In freshwater lakes, microbes regulate the flow of carbon and determine if the bodies of water serve as carbon sinks or carbon sources. Algae and cyanobacteria in particular can trap and use carbon, but their capacity to do so may be impacted by viruses. Viruses exist… [Read More]

October 5, 2017

Liverwort Genes and Land Plant Evolution

A Marchantia polymorpha thallus in the vegetative form. Cup-shaped structures on the surface are gemma cups (cupules), reproductive organs producing asexual propagules (gemmae). (Photograph by Shohei Yamaoka, Kyoto University)Genome analysis of early plant lineage sheds light on how plants learned to thrive on land. Though it’s found around the world, it’s easy to overlook the common liverwort – the plant can fit in the palm of one’s hand and appears to be comprised of flat, overlapping leaves. Despite their unprepossessing appearance, these plants… [Read More]

October 4, 2017

A Technique for Targeted Improvement

A bioluminescent assay helped researchers visually quantify the colonization ability of P. simiae mutant strains identified by the RB-TnSeq screen. (Benjamin Cole)Establishing a genome-wide map of bacterial genes crucial for colonization of plants by beneficial microbes The Science Working with the plant growth-promoting bacterium Pseudomonas simiae, researchers have identified 115 genes that negatively affect its ability to colonize a plant root system when mutated. The Impact A plant’s health and development is influenced by the complex… [Read More]

October 2, 2017

Benchmarking Computational Methods for Metagenomes

Table showing partial results of assemblers applied to the 1st CAMI Challenge, Dataset 1.Community-driven CAMI Challenge offers analysts, scientists insights on the right tools for their research questions. They are everywhere, but invisible to the naked eye. Microbes are the unseen, influential forces behind the regulation of key environmental processes such as the carbon cycle, yet most of them remain unknown. For more than a decade, the U.S…. [Read More]

September 26, 2017

2018 DOE JGI Community Science Program Allocations Announced

Mucor circinelloides sporangiophore. (S. Torres-Martínez. University of Murcia, Spain.)Proposals encompass multiple capabilities of the national user facility Though organisms can be studied in isolation, a more comprehensive picture emerges when their environmental interactions are taken into account. Along the same lines, many of the 30 proposals selected for the 2018 Community Science Program (CSP) of the U.S. Department of Energy Joint Genome Institute (DOE… [Read More]

September 25, 2017

From Genome to Watershed Scales

East River, CO, USA (Courtesy of Jill Banfield)The quality of water that leaves the watershed is impacted by soil microbial communities that will be studied here. The research will target regions along the East River, a tributary of the Colorado River, focusing on three subsystems: the river corridor and hillslopes and consider effects of time of year, depth below the surface and… [Read More]

September 22, 2017

Microbial Functions at Soil-Aquatic Interfaces

47-55 percent of the terrestrial carbon is transported and processed in rivers. Terrestrial carbon is generally considered to be resistant to aquatic microbial metabolism. However, recent evidence suggests that at soil-aquatic interfaces terrestrial carbon can be respired by aquatic microorganism at the cost of low carbon use efficiency thus contributing to CO2-fluxes to the atmosphere…. [Read More]

September 22, 2017

DNA Methylation Role in Basal Fungi

Mucor circinelloides sporangiophore. (S. Torres-Martínez. University of Murcia, Spain.)DNA methylation is a fundamental epigenetic modification that plays a critical role in genome function in eukaryotes. This proposal will study the function of N6-methyladenine (6mA) in early divergent fungi because it is more abundant than in other eukaryotes and seems to regulate gene expression. The function will be studied in the context of responses… [Read More]
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