Intense ectoenzyme activities associated with Trichodesmium colonies in the Sargasso Sea

  title={Intense ectoenzyme activities associated with Trichodesmium colonies in the Sargasso Sea},
  author={Karen M. Orcutt and Kjell Gundersen and James W. Ammerman},
Ectoenzyme activities of alkaline phosphatase (APA) and leucine aminopeptidase (LAP) associated with Trichodesmium, a globally significant dinitrogen (N2) fixer, were measured on cruises to the Bermuda Atlantic Time-Series (BATS) site. Rates associated with Trichodesmium were compared to microbial enzyme activities in natural seawater between August 1992 and November 1997. Colonies of Trichodesmium function as ‘microsites’ for ectoenzyme activity and express high rates of APA (4 to 66 nmol… CONTINUE READING


Publications referenced by this paper.
Showing 1-10 of 70 references

Phosphorus dynamics in cultures and natural populations of Trichodesmium spp

MR Mulholland, S Floge, EJ Carpenter, DG Capone
Mar Ecol Prog Ser • 2002
View 8 Excerpts
Highly Influenced

Phosphorus limitation by Tricho desmium in the Central Atlantic Ocean

SA Sañudo-Wilhelmy, A Tovar-Sanchez, +3 authors DA Hutchins
Nature • 2001
View 13 Excerpts
Highly Influenced

Ectoaminopeptidase specificity and regulation in Antarctic marine pelagic microbial communities

J Christian, DM Karl
Aquat Microb Ecol • 1998
View 15 Excerpts
Highly Influenced

Microbial activities on Trichodesmium colonies

M Nausch
Mar Ecol Prog Ser • 1996
View 8 Excerpts
Highly Influenced

Significance of exoenzymatic activities in the ecology of brackish water : measurements by means of methylumbelliferylsubstrates

HG Hoppe
Mar Ecol Prog Ser • 1983
View 9 Excerpts
Highly Influenced

Phosphate uptake and growth kinetics of Trichodesmium ( Cyanobacteria ) isolates from the North Atlantic Ocean and the Great Barrier Reef , Australia

FX Fu, Y Zhang, Bell PRF, DA Hutchins
J Phycol • 2005
View 4 Excerpts
Highly Influenced

Phos - phorus deficiency in the Atlantic : an emerging paradigm in oceanography

JW Ammerman, RR Hood, DA Case, JB Cotner
EOS Trans Am Geophys Union • 2003
View 4 Excerpts
Highly Influenced

Phosphorus - limited bacterioplankton growth in the Sargasso Sea

JB Cotner, JW Ammerman, ER Peele, E Bentzen
Aquat Microb Ecol • 1997
View 4 Excerpts
Highly Influenced

Cell - associated proteolytic enzymes from marine phytoplankton

JA Berges, PG Falkowski
J Phycol • 1996
View 5 Excerpts
Highly Influenced

Oscillatoria ( Trichodesmium ) thiebautii ( Cyanophyta ) in the Central North Atlantic Ocean

JJ McCarthy, EJ Carpenter
J Phycol • 1979
View 2 Excerpts
Highly Influenced

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