Stable carbon isotope analysis of nucleic acids to trace sources of
dissolved substrates used by estuarine bacteria.
R B Coffin, D J Velinsky, R Devereux, W A Price, L A Cifuentes
Applied and Environmental Microbiology Jul 1990, 56 (7) 2012-2020; DOI:

This is carbon, but Iąd suggest looking at the citations for this early,
very cool work.


łAlways do right. This will gratify some people and astonish the rest.˛ Mark

Follow my new blog at

Dr. Marilyn L. Fogel,
Distinguished Professor and Wilbur W. Mayhew Professor of Geo-Ecology
Director of the Environmental Dynamics and Geo-Ecology Institute
Dept. of Earth and Planetary Sciences
University of California Riverside
900 University Ave.
Riverside, CA 92521
[log in to unmask]
Phone: 209-205-6743

From:  Stable Isotope Geochemistry <[log in to unmask]> on behalf of
Jenan Kharbush <[log in to unmask]>
Reply-To:  Stable Isotope Geochemistry <[log in to unmask]>
Date:  Wednesday, September 25, 2019 at 12:54 PM
To:  <[log in to unmask]>
Subject:  [ISOGEOCHEM] 15N of DNA in bacteria/algae?

Hi everyone,
Kind of a weird question today- does anyone know of any 15N measurements of
DNA in microorganisms? So far I've only found one paper (Schwartz et al
2007, Soil Biology and Biochem) that measured DNA extracted from soil- their
results indicated that DNA is 15N-depleted by 3 permil on average relative
to microbial biomass. I'm trying to figure out if that's a good estimate to
use for bacteria and/or algae in general.
If anyone can point me to data or other resources on this topic, I'd
appreciate it! 

Jenan J. Kharbush, PhD
Pronouns: She/Her/Hers
Department of Earth and Environmental Science

University of Michigan

Room 2534

1100 N. University Ave.

Ann Arbor, MI 48109-1005