A competitive ELISA to detect brevetoxins from Karenia brevis (formerly Gymnodinium breve) in seawater, shellfish, and mammalian body fluid.
- J. Naar, A. Bourdelais, D. Baden
- Biology, Environmental ScienceEnvironmental Health Perspectives
- 1 February 2002
We developed a competitive enzyme-linked immunosorbent assay (ELISA) to analyze brevetoxins, using goat anti-brevetoxin antibodies obtained after immunization with keyhole limpet…
Does the red tide dinoflagellate Karenia brevis use allelopathy to outcompete other phytoplankton?
Results indicate that allelopathy occurs widely but with species-specific consequences in bloom dynamics, and that brevetoxins at ecologically reasonable waterborne concentrations accounted for the modest inhibition by K. brevis.
Macroalgal terpenes function as allelopathic agents against reef corals
- D. Rasher, E. P. Stout, S. Engel, J. Kubanek, M. Hay
- Environmental ScienceProceedings of the National Academy of Sciences
- 17 October 2011
Field experiments demonstrate that numerous macroalgae directly damage corals by transfer of hydrophobic allelochemicals present on algal surfaces, highlighting a newly demonstrated but potentially widespread competitive mechanism to help explain the lack of coral recovery on many present-day reefs.
Multiple defensive roles for triterpene glycosides from two Caribbean sponges
The dual strategy of employing one group of compounds for multiple purposes and minimizing the loss of compounds into seawater suggests that these organisms utilize chemical defenses with efficiency.
Seaweed resistance to microbial attack: A targeted chemical defense against marine fungi
- J. Kubanek, P. Jensen, P. Keifer, M. C. Sullards, D. Collins, W. Fenical
- Environmental Science, BiologyProceedings of the National Academy of Sciences…
- 19 May 2003
It is suggested that seaweeds use targeted antimicrobial chemical defense strategies and that secondary metabolites important in the ecological interactions between marine macroorganisms and microorganisms could be a promising source of novel bioactive compounds.
Desorption electrospray ionization mass spectrometry reveals surface-mediated antifungal chemical defense of a tropical seaweed
- Amy L. Lane, Leonard Nyadong, J. Kubanek
- BiologyProceedings of the National Academy of Sciences
- 5 May 2009
Desorption electrospray ionization mass spectrometry imaging revealed that surface-associated bromophycolides were found exclusively in association with distinct surface patches at concentrations sufficient for fungal inhibition, suggesting the importance of secondary metabolites in localized ecological interactions, and illustrating the potential of DESI-MS in understanding chemically-mediated biological processes.
Effects of harmful algal blooms on competitors: Allelopathic mechanisms of the red tide dinoflagellate Karenia brevis
Overall, during blooms, K. brevis may achieve nearly monospecific blooms by lowering the photosynthetic efficiency of competitor species and increasing competitor membrane permeability, eventually resulting in competitor growth suppression or death.
Fitness consequences for copepods feeding on a red tide dinoflagellate: deciphering the effects of nutritional value, toxicity, and feeding behavior
Results indicate that K. brevis is a poor food for A. tonsa, probably due to nutritional inadequacy rather than toxicity, which could affect bloom dynamics in the Gulf of Mexico where these species co-occur.
New fish-killing alga in coastal Delaware produces neurotoxins.
- A. Bourdelais, C. Tomas, J. Naar, J. Kubanek, D. Baden
- Environmental ScienceEnvironmental Health Perspectives
- 1 April 2002
The results affirm that to avoid deleterious impacts on human and ecosystem health, increased monitoring is needed for brevetoxins and organism(s) producing them, even in areas previously thought to be unaffected.
Chemically mediated competition between microbes and animals: microbes as consumers in food webs.
Because food-fall resources such as carrion are major food subsidies in many ecosystems, chemically mediated competition between microbes and animals could be an important, common, but underappreciated interaction within many communities.