Quantifying nutrient throughput and DOM production by algae in continuous culture.

Journal of Theoretical Biology
A W OmtaM J Follows

Abstract

Freshwater and marine algae can balance nutrient demand and availability by regulating uptake, accumulation and exudation. To obtain insight into these processes under nitrogen (N) and phosphorus (P) limitation, we reanalyze published data from continuous cultures of the chlorophyte Selenastrum minutum. Based on mass budgets, we argue that much of the non-limiting N and P had passed through the organisms and was present as dissolved organic phosphorus or nitrogen (DOP or DON). We construct a model that describes the production of biomass and dissolved organic matter (DOM) as a function of the growth rate. A fit of this model against the chemostat data suggests a high turnover of the non-limiting N and P: at the highest growth rates, N and P atoms spent on average only about 3 h inside an organism, before they were exuded as DON and DOP, respectively. This DOM exudation can explain the observed trends in the algal stoichiometric ratios as a function of the dilution rate. We discuss independent evidence from isotope experiments for this apparently wasteful behavior and we suggest experiments to quantify and characterize DON and DOP exudation further.

References

Jun 21, 1979·Journal of Theoretical Biology·B Shuter
Apr 17, 1997·Biochemical and Biophysical Research Communications·K UemuraA Yokota
Mar 11, 2003·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·John C P HemmingsMichael J R Fasham
Nov 1, 1963·The Journal of protozoology·J R COOK
Dec 4, 2003·Biochemical Society Transactions·P R Rich
May 14, 2004·Nature·Christopher A KlausmeierSimon A Levin
Aug 1, 1991·Applied and Environmental Microbiology·B Palenik, F M Morel
Jan 30, 2007·Chemical Reviews·Adina Paytan, Karen McLaughlin
Jan 30, 2008·Journal of Experimental Botany·David S KubienLinley K Jesson
Mar 25, 1990·Biotechnology and Bioengineering·R A Majewski, M M Domach
Nov 6, 2009·Molecular Systems Biology·Douwe MolenaarBas Teusink
Mar 10, 2010·Nature Biotechnology·Jeffrey D OrthBernhard Ø Palsson
May 4, 2010·Journal of Theoretical Biology·Gaël BougaranAntoine Sciandra
Oct 6, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·António LorenaTânia Sousa
Aug 27, 2011·Water Science and Technology : a Journal of the International Association on Water Pollution Research·N PowellY Chisti
Jan 11, 2014·Annual Review of Marine Science·David M Karl
Jan 11, 2014·Science·Steven J BillerSallie W Chisholm
Apr 23, 2014·Proceedings of the National Academy of Sciences of the United States of America·Patrick MartinBenjamin A S Van Mooy
Mar 18, 2016·Journal of Phycology·Senjie LinWilliam G Sunda
Oct 1, 2008·Journal of Phycology·Kevin J FlynnYao Xue
Jun 23, 2016·Plant Physiology·Carmen Hermida-CarreraJeroni Galmés
Dec 1, 1976·Oecologia·Robert Henry Peters, Sally MacIntyre
Aug 31, 2017·Annual Review of Marine Science·Allison R Moreno, Adam C Martiny
Nov 22, 2017·Methods in Molecular Biology·Jaana KoistinenKristian Spilling
Jan 11, 2019·Nature Communications·Alan R PachecoDaniel Segrè

❮ Previous
Next ❯

Citations

Dec 19, 2020·Computational and Structural Biotechnology Journal·Keisuke InomuraMichael J Follows
Sep 21, 2021·Environmental Microbiology Reports·Giulia DalyAlessandra Adessi
Oct 14, 2021·Protoplasma·Cristiane do Carmo CesárioJane Selia Dos Reis Coimbra

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.