Current Research Projects

A lipidomic time-series in the Southern California Bight

Between February and June 2019, we sampled lipids throughout the water column at the San Pedro Ocean Time-series.

Lab Members: open

Lipidomic analysis of diel microbial community dynamics in Monterey Bay

The particulate lipid pool was sampled every 12 hours for five days in early June 2019 in Monterey Bay. We are using lipidomics to explore biomarkers for microbial community dynamics.

Lab Members: Jiwoon Hwang

Algal Biofuels and Natural Products

We are exploring the maximization of lipid quality in algal biofuel stocks, aquaculture, nutriceuticals, as well as, the production of natural products for drug discovery by screening the lipidomes of phytoplankton grown in varying conditions.

Alex Starr. MCB Honors Thesis. 2020. Microdoses of Ethanol Lead to Large Changes in the Growth and Lipidome of Chlorella vulgaris

Annie Leal. College of Chemistry Honors Theses. 2020. Lipidome Changes in Chlorella Vulgaris in Response to Ethanol and Ion Suppression Effects in LC-MS

Past Research Projects

Meta'omic analysis of sinking particles from 4000M at Station ALOHA

As a postdoc in Ed Delong's lab at the University of Hawaii-Manoa, I used meta-genomic and meta-transcriptomic analysis to explore the microbial communities colonizing particles that reach 4000m in North Pacific Subtropical Gyre.

Publications

Biological composition and microbial dynamics of sinking particulate organic matter at abyssal depths in the oligotrophic open ocean

Dominique Boeuf, Bethanie R. Edwards *, John M. Eppley*, Sarah K. Hu, Kirsten E. Poff, Anna E. Romano, David A. Caron, David M. Karl, and Edward F. DeLong

PNAS June 11, 2019 116 (24) 11824-11832

* Co-first authors

Figure2D (1) (2017_02_15 23_19_24 UTC).jpg

biogeochemistry of LipiD Derived chemical Signals in the ocean

My graduate work was partially funded by a collaborative grant awarded to Ben Van Mooy, Kay Bidle, Assaf Vardi, and Matt Johnson to study infochemical signals produced by phytoplankton called oxylipins.

Publications

Infochemical Signaling Linked to Diatom Bloom Decline and Viral Infection.

Bethanie Edwards, Kim Thamatrakoln, Jeff Krause, Heather McNair, Andrew Allen, Mark Brzezinski, Matt Johnson, Kay D. Bidle, Ben Van Mooy.

(in prep)

Nitric oxide mediates oxylipin production and cellular defense in diatoms.

Johnson M, Edwards BR, Beaudoin D, Van Mooy BAS, Vardi A. (2020) Environmental Microbiology DOI: 10.1111/1462-2920.14879

Silicon limitation facilitates virus infection and mortality of marine diatoms.

Kranzler CF, Krause JW, Brzezinski MA, Edwards BR, Biggs WP, Maniscalco M, McCrow JP, Van Mooy BAS, Bidle KD, Allen AA, and Thamatrakoln K.

Nature Microbiology. doi: 10.1038/s41564-019-0502-x.

LOBSTAHS: an adduct-based lipidomics strategy for discovery and identification of oxidative stress biomarkers

JR Collins, BR Edwards, HF Fredricks, BAS Van Mooy

Analytical chemistry 88 (14), 7154-7162