Edward DeLong

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Edward Francis DeLong
Born Sonoma, California, United States
Nationality American
Fields Microbiology
Institutions Massachusetts Institute of Technology and University of Hawaii, Manoa
Alma mater Santa Rosa Junior College
University of California, Davis
Scripps Institution of Oceanography
Doctoral advisor Art Yayanos
Known for Work in metagenomics and biogeochemical cycling

Edward Francis DeLong is a marine microbiologist and professor in the Department of Oceanography at the University of Hawaii, Manoa, and is considered a pioneer in the field of metagenomics. He is best known for his discovery of the bacterial use of the rhodopsin protein in converting sunlight to biochemical energy in marine microbial communities.

Early life and education[edit]

DeLong was born in Sonoma, California. He studied biology at Santa Rosa Junior College and obtained an A.S. degree in 1980. While continuing his education at the University of California, Davis, DeLong had originally planned on becoming a medical technologist, but after a meeting and working as a researcher with bacteriologist Paul Baumann, he found a new interest in marine microbiology.[1] He graduated with a B.S. degree in bacteriology at UCD in 1982 and moved to the Scripps Institution of Oceanography, where he received a Ph.D. in marine biology after finishing doctoral work with Art Yayanos in 1986. DeLong completed his postdoctoral training at Indiana University in Bloomington with Norman Pace, where he surveyed communities of picoplankton via DNA sequencing.

Work[edit]

Energy gathering mechanism in marine bacteria via Proteorhodopsin.

With Pace and his group at Indiana University, DeLong developed a method that can be used to identify single cells phylogenetically through the use of phylogenetic stains.[2] These rRNA-based probes identify the cells based on the binding of fluorescent probes to individual cells through use of oligonucleotides that are complementary to 16S rRNA sequences of specific phylogenetic groups. The use of multiple probes with different fluorescent dyes allows for the identification of different cell types in the same field.

DeLong subsequently expanded upon this work and applied gene cloning and sequencing to the study of complex marine microbial communities and their role in the biosphere. These techniques carried significance in that microbes could be studied without the use of a standard microbial culture.

After receiving an independent study award in 1989, DeLong spent some time at the Woods Hole Oceanographic Institute in Woods Hole, Massachusetts, and would later on become Associate Professor in the Biology and Ecology, Evolution, and Marine Biology Departments at the University of California, Santa Barbara. DeLong’s surveys during his time at UCSB led him to participate in the study of widespread abundance and diversity of marine archaea in the world’s oceans. Prior to 1992, archaea were thought only to exist in the extreme environments of hypersaline lakes, hydrothermal vents, and similar places. This changed the general view of the scientific community on the role of archaea in the biosphere and opened up new possibilities in applied potential of such microbial assemblages.

In the years following, DeLong’s work took him to the Monterey Bay Aquarium Research Institute and it is during his time there that he made a crucial discovery in the understanding of the Earth’s carbon and energy cycles. A team of microbiologists led by DeLong discovered a gene in several species of bacteria[3] responsible for production of the protein rhodopsin, previously unheard of in the domain Bacteria. These proteins found in the cell membranes are capable of converting light energy to biochemical energy due to a change in configuration of the rhodopsin molecule as sunlight strikes it, causing the pumping of a proton from inside out and a subsequent inflow that generates the energy.[4] In 2004, DeLong moved to the Massachusetts Institute of Technology, where he worked on developing gene expression studies targeting microbial communities in the wild. At MIT, his collaborations with CMORE and Monterey Bay Aquarium Research Institute colleagues, he discovered of highly synchronized microbial populations having oscillating patterns of gene expression across many species. In 2014, DeLong relocated to the University of Hawaii, where he serves as Co-Director for the Center for Microbial Oceanography: Research and Education, C-MORE and the Simons Collaboration on Ocean Processes and Ecology, SCOPE

DeLong performing fieldwork in Antarctica.

Honoraria, Fellowships, and Memberships[edit]

Honorary Professorship, University of Queensland, Brisbane, Australia, 1999-2002.

Elected Fellow in the American Academy of Microbiology, August 2000.

Moore Investigator in Marine Microbiology, August, 2004.

Elected Fellow in the American Academy of Arts and Sciences, May 2005.

In April 2008, DeLong was presented with the Vladimir Ivanovich Vernadsky Medal for “important contributions to geomicrobiology and biogeochemical cycling through the innovative use of molecular tools and a genomic approach” at the European Geosciences Union.[5]

Elected Fellow in the National Academy of Science, April 2008.

The American Society of Microbiology presented DeLong with the Procter & Gamble Award in Applied and Environmental Microbiology in May 2008 and the D.C. White Research and Mentoring Award in February 2009.

Elected Fellow in the American Association for the Advancement of Science, 2011.

UC Davis College of Biological Sciences Outstanding Alumni Award, UC Davis, 2012

Moore Investigator in Marine Microbiology, 2012.

A.G. Huntsman Award for Excellence in the Marine Sciences, 2014

Elected Member in the European Molecular Biology Association EMBO, 2015.

Personal[edit]

DeLong scuba diving for research in marine archaea.

During the years of his childhood in Sonoma, DeLong shared a love for the ocean and learned to skin dive, scuba dive, and paddle a kayak. He moved to Alaska on a soul search after graduating high school before he decided to return to California to start college.

See also[edit]

References[edit]

  1. ^ DeLong, Edward F. "Oceans of Archaea" (PDF). ASM News Volume 69, Number 10, 2003. 
  2. ^ "David C. White Research and Mentoring Award - 2009". Website of David C. White February, 2009. 
  3. ^ "Interviews with Fellows". American Academy of Microbiology. Retrieved 02-01-2011.  Check date values in: |access-date= (help)
  4. ^ Bacteria with Batteries, Popular Science magazine, January 2001, Page 55.
  5. ^ "Ed DeLong elected to the National Academy of Sciences". CEE News April 28, 2008. 

External links[edit]