Chemical ecology of the marine plankton

Roy, Jessie S.; Poulson‐Ellestad, Kelsey L.; Sieg, R. Drew; Poulin, Remington X.; Kubanek, Julia

doi:10.1039/c3np70056a

Cited by 19 publications

(10 citation statements)

References 101 publications

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“…allelopathy), grazing (e.g. defense, predator and prey location, precapture) and even facultative interactions (Roy et al, 2013). However, our study also demonstrates how allelopathy can affect competitors in a complex manner and stresses the need to investigate the role of allelopathy in more natural settings consistent with field conditions, since allelopathy can have unexpected consequences on competitors.…”

Section: Discussionmentioning

confidence: 56%

Are offshore phytoplankton susceptible to Karenia brevis allelopathy?

Poulson‐Ellestad

McMillan

Montoya

et al. 2014

Journal of Plankton Research

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The bloom-forming dinoflagellate Karenia brevis produces a suite of allelopathic compounds that inhibit the growth of several phytoplankton competitors in laboratory experiments. However, it is less clear how allelopathy affects competition in the field, including whether allelopathic compounds impact K. brevis bloom dynamics. We investigated the extent to which phytoplankton species typically found offshore in the Gulf of Mexico, where K. brevis blooms initiate, are sensitive to K. brevis allelopathy. Natural assemblages of offshore phytoplankton dominated by diatoms were largely resistant to K. brevis allelopathy, even experiencing slight stimulation of growth from exposure to K. brevis exudates. When tested in pair-wise laboratory experiments, four diatom species often found offshore in the Gulf of Mexico exhibited varying degrees of resistance to K. brevis similar to that observed with field assemblages, although some competitors displayed a trend toward growth inhibition. In concurrent pair-wise laboratory experiments, four diatom species whose nearshore habitats frequently experience dense K. brevis blooms also demonstrated a range of responses to K. brevis allelopathy, from strong sensitivity to resistance. Overall, Gulf of Mexico phytoplankton that co-occur with K. brevis blooms in both nearshore and offshore environments respond variably to K. brevis allelopathy.

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Section: Discussionmentioning

confidence: 56%

Are offshore phytoplankton susceptible to Karenia brevis allelopathy?

Poulson‐Ellestad

McMillan

Montoya

et al. 2014

Journal of Plankton Research

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“…Proliferations of algae can have adverse effects on ecosystems and cause enormous economic losses, e.g. due to biofouling or the occurrence of harmful algal blooms (Fusetani, 2004;Roy et al, 2013). Importantly, algae also emerge as interesting organisms for industrial exploitation due to their high reproduction rate and biochemical composition.…”

Section: Introductionmentioning

confidence: 99%

“…Allelochemical interactions can play a role during competition by the production of compounds that suppress other species or can involve mutualistic relationships in which the release of metabolites benefits the growth of other species (Cembella, 2003;Pohnert et al, 2007;Paul et al, 2009;Vanelslander et al, 2012). Natural products from algae can also serve as a defense mechanism against herbivores or mediate the interaction with associated or pathogenic microorganisms (Ianora et al, 2011;Amin et al, 2012;Roy et al, 2013). As a consequence of this pervasive use of secondary metabolites in communication and defense, algae are known to be a proliferative source for natural products (Sieg et al, 2011;Roy et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Natural products from algae can also serve as a defense mechanism against herbivores or mediate the interaction with associated or pathogenic microorganisms (Ianora et al, 2011;Amin et al, 2012;Roy et al, 2013). As a consequence of this pervasive use of secondary metabolites in communication and defense, algae are known to be a proliferative source for natural products (Sieg et al, 2011;Roy et al, 2013). While research has largely focused on the identification and characterization of the functional role of compounds involved in interspecific interactions, much less information is known about signaling molecules employed during communication among individuals of the same species.…”

Section: Introductionmentioning

confidence: 99%

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Pheromone signaling during sexual reproduction in algae

2014

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SUMMARYAlgae are found in all aquatic and many terrestrial habitats. They are dominant in phytoplankton and biofilms thereby contributing massively to global primary production. Since algae comprise photosynthetic representatives of the various protoctist groups their physiology and appearance is highly diverse. This diversity is also mirrored in their characteristic life cycles that exhibit various facets of ploidy and duration of the asexual phase as well as gamete morphology. Nevertheless, sexual reproduction in unicellular and colonial algae usually has as common motive that two specialized, sexually compatible haploid gametes establish physical contact and fuse. To guarantee mating success, processes during sexual reproduction are highly synchronized and regulated. This review focuses on sex pheromones of algae that play a key role in these processes. Especially, the diversity of sexual strategies as well as of the compounds involved are the focus of this contribution. Discoveries connected to algal pheromone chemistry shed light on the role of key evolutionary processes, including endosymbiotic events and lateral gene transfer, speciation and adaptation at all phylogenetic levels. But progress in this field might also in the future provide valid tools for the manipulation of aquaculture and environmental processes.

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“…[7][8][9] Karlson and Butenendt s 3 and Law and Rengier s 4 article were limited to pheromones. However, today it is also well established that pheromones and other semiochemicals (or small molecules, as Meinwald 7 called them) are found in microorganisms [10][11][12][13][14][15][16] , amphibinas [17][18][19][20][21] , spiders [22][23][24][25][26][27][28] , birds [29][30][31][32][33] , marine organisms [34][35][36][37][38][39][40][41] , non-human mammals [42][43][44][45][46] , and humans. [47][48][49][50][51][52][53] According to Verpoorte 54 there are some 250,000 of such 'natural products' and some 4,000 new ones are reported ev...…”

Section: Chemical Ecologymentioning

confidence: 99%

Research with Chemistry and Pharmacology of Natural Products in Brazil: A Comparison with 70 Selected Countries from 5 Continents

Alves¹,

Pontes²

2017

Rev. Virtual Quim.

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Living organisms (bacteria, fungi, lichens, algae, worms, mushrooms, higher plants, and aquatic and terrestrial animals) produce a plethora of chemical compounds, the natural products , that lie at the heart of an ecological interaction, acting as molecular messengers in defense, attack, sexual attraction, territorial and trail marking, in pollination, as venoms, etc. Eventually, human beings make use of them for their own purposes as food additives, flavoring, cosmetics, fragrances, hallucinogens, in pest control, and as therapeutic agents. The present review compares the participation of Brazilian scientists in the chemistry and pharmacology of natural products with that of other scientists from 69 countries in five continents in 36 selected journals. It also shows the analogy between the Human Development Index (HDI) and the rank of the countries with the number published articles. The search was performed in the Web of Knowledge by cross-selecting the names of each journal with that of each country for the period 1945-2013.Keywords: Brazil; chemistry of natural products; pharmacology of natural products; peer journals. ResumoOrganismos vivos (bactérias, fungos, liquens, vermes, cogumelos, vegetais superiores, e animais aquáticos e terrestres) produzem uma pletora de substâncias químicas, os produtos naturais , que estão no coração de uma interação ecológica, atuando como mensageiros moleculares na defesa, ataque, atração sexual, marcação territorial e de trilha, na polinização, como venenos, etc. Eventualmente, os seres humanos fazem uso deles para o seu próprio benefício como aditivos, flavorizantes, cosméticos, fragrância, alucinógenos, no controle de pestes, e como agentes terapêuticos. Esta revisão compara a participação de cientistas brasileiros na química e farmacologia de produtos naturais com a de cientistas de 69 países de cinco continentes em 36 periódicos selecionados. Ela também mostra a analogia entre o Índice de Desenvolvimento Humano (IDH) e a classificação dos países com o número de artigos publicados. A pesquisa foi realizada na Web of Knowledge através de seleção cruzada do nome de cada periódico com o de cada país no período 1945-2013.Palavras-chave: Brasil; química de produtos naturais; farmacologia de produtos naturais; periódicos.

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Chemical ecology of the marine plankton

Cited by 19 publications

References 101 publications

Are offshore phytoplankton susceptible to Karenia brevis allelopathy?

Are offshore phytoplankton susceptible to Karenia brevis allelopathy?

Pheromone signaling during sexual reproduction in algae

Research with Chemistry and Pharmacology of Natural Products in Brazil: A Comparison with 70 Selected Countries from 5 Continents

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