Rex R. Malmstrom

Biologist Research Scientist

DOE Joint Genome Institute

Genomic Technologies

Secondary Affiliation: Environmental Genomics and Systems Biology

Comparative and Functional Genomics

RRMalmstrom@lbl.gov

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JGI Applies Super-charged Stable Isotope Probing to Fungal Hyphosphere

May 31, 2023

High-throughput stable isotope probing (SIP) proved to vastly reduce labor and improve results. Applying this method to the study of a particular fungi, researchers identified novel interactions between bacteria and the fungi.

Biosciences Researchers Part of Genomic Analysis of Giant Bacteria Found in Guadeloupe Mangroves

June 23, 2022

In Science, a team led by Jean-Marie Volland, a scientist with joint appointments at the DOE Joint Genome Institute (JGI) and the Laboratory for Research in Complex Systems, and Silvina Gonzalez-Rizzo and Olivier Gros of the Université des Antilles, described the morphological and genomic features of a giant filamentous bacterium, along with its life cycle.

JGI Helps Reveal Marine Microbe Contains Multitudes

November 18, 2021

The bacterium SAR324 is unusually cosmopolitan. In the ocean’s North Pacific Subtropical Gyre, microbes tend to stay localized at different depths. But SAR324 can be found throughout the water column, from the warm, well-lit surface, to the blue-lit twilight zone, to the continuous pressure of the dark abyss, 4000 m (2.5 miles) deep. Scientists have wondered, how can SAR324 exist in so many varied environments? Now, a recent study supported by JGI and has uncovered that SAR324 encompasses four subgroups, adapted to different oceanic depths and relying on different ways of living. Read more about the hidden diversity of SAR324 on the JGI website.

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