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Arnoldt S, Pourdanandeh M, Spikkeland I, Andersson MX, Selander E. Mass spectroscopy reveals compositional differences in copepodamides from limnic and marine copepods. Sci Rep 2024; 14:3147. [PMID: 38326374 PMCID: PMC10850141 DOI: 10.1038/s41598-024-53247-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/30/2024] [Indexed: 02/09/2024] Open
Abstract
Marine copepods, the most abundant animals in the global ocean, imprint their surrounding waters with chemical cues, called copepodamides. Copepodamides induce defensive traits such as toxin production, bioluminescence, and colony size plasticity in a variety of marine phytoplankton. The role of copepodamides in freshwater ecosystems is, however, unknown. Here we report the consistent presence of copepodamides in copepods from six Swedish freshwater lakes. Copepodamide concentrations in freshwater copepods are similar to those of marine copepods, around 0.1 ppt of dry mass in millimetre sized individuals. The composition substantially overlaps with marine copepodamides but is also distinctly different. Marine copepods commonly contain both subgroups of copepodamides, the copepodamides (CA) and the dihydro-copepodamides (dhCA), whereas freshwater copepods are dominated by the dhCAs. Taxonomic groups had consistent copepodamide profiles across sampling sites and timepoints, supporting the presence of species-specific copepodamide signatures. We describe 10 new copepodamide structures, four of which were found exclusively in freshwater copepods. The presence of copepodamides in limnic copepods also warrants studies into their potential function as predator alarm cues in freshwater systems.
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Affiliation(s)
- Sina Arnoldt
- Department of Marine Sciences, University of Gothenburg, Medicinaregatan 7B, 41390, Gothenburg, Sweden
| | - Milad Pourdanandeh
- Department of Marine Sciences, University of Gothenburg, Medicinaregatan 7B, 41390, Gothenburg, Sweden
| | - Ingvar Spikkeland
- Department of Haldenvassdragets Kanalmuseum, Østfold Museum Foundation, Gamlebygata 8, 1721, Sarpsborg, Østfold, Norway
| | - Mats X Andersson
- Department of Biological and Environmental Sciences, University of Gothenburg, Medicinaregatan 7B, 41390, Gothenburg, Sweden
| | - Erik Selander
- Department of Biology-Aquatic Ecology, Lund University, Sölvegatan 37, 22362, Lund, Sweden.
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Oda Y, Miyabara Y. Grazing inhibition in Daphnia and Bosmina by colony formation of Desmodesmus subspicatus triggered by sodium octyl sulfate. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:884-894. [PMID: 37676551 DOI: 10.1007/s10646-023-02694-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/24/2023] [Indexed: 09/08/2023]
Abstract
There are growing concerns that several aquatic contaminants can indirectly alter biological interactions by inhibiting the adaptive phenotypic plasticity of organisms, even at nonlethal concentrations. In Scenedesmaceae, a family of green algae, many chemicals interfere with defensive colony formation against grazers (i.e., through induced or limited coloniality). Although several studies have demonstrated that the effects of coloniality can limit the feeding capacity of Daphnia spp., grazing inhibition in other zooplankton species is not well understood. In this study, we examined the influence of sodium octyl sulfate (SOS) on the growth and morphology of Desmodesmus subspicatus and on the feeding rates of three cladoceran species (Daphnia galeata, Bosmina longirostris, and Bosmina fatalis) feeding on SOS-induced colonies under factorial conditions of different food levels and grazer ages. SOS remarkably induced colony formation with no observed effect on growth in D. subspicatus. D. galeata and B. fatalis showed a remarkable reduction in feeding rates when they fed on colonial D. subspicatus, whereas no significant effect of the prey morphotype was found on the feeding rates of B. longirostris. Microscopic observations of algal morphology after being grazed showed that each species can consume colonial prey depending on food level and age. Comparisons of the inhibition ratio of feeding among the three cladocerans revealed that Daphnia was more sensitive to prey coloniality compared with Bosmina. Our findings provide specific insights into the effects of chemically interfered colony formation on population dynamics and community structures.
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Affiliation(s)
- Yusuke Oda
- Department of Science and Technology, Shinshu University, Matsumoto, Nagano, Japan.
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan.
| | - Yuichi Miyabara
- Suwa Hydrobiological Station, Faculty of Science, Shinshu University, Suwa, Nagano, Japan
- Institute of Mountain Science, Shinshu University, Minamiminowa, Nagano, Japan
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3
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Więski K, Ślusarczyk M. On the different role of alarm substances and fish kairomones in diapause induction in a freshwater planktonic crustacean. JOURNAL OF PLANKTON RESEARCH 2022; 44:278-287. [PMID: 36479192 PMCID: PMC9718797 DOI: 10.1093/plankt/fbac004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/17/2022] [Indexed: 06/17/2023]
Abstract
Many aquatic organisms anticipate predation risk via infochemical detection. In a laboratory experiment, we investigated the expression of life-history responses in planktonic Daphnia magna under long-lasting exposure to various concentrations of fish kairomones (FK) and alarm substances of Daphnia (AS). Daphnia were exposed to one of six concentrations of AS (0, 0.0005, 0.005, 0.05, 0.5, 5 homogenized D. magna/L) mixed with the highest concentration of FK, or to one of six concentrations of FK (diluted fish feces of 0, 0.001, 0.002, 0.01, 0.02, 0.1 fish/L) accompanied by the highest concentration of AS. FK alone at the highest concentration were sufficient to induce diapause in 21% of Daphnia, while AS alone at the highest concentration did not trigger diapause. Mixed at the highest concentrations, both cues induced diapause in 94% of Daphnia, whereas in the control treatment free of infochemicals no ephippial individuals occurred. No significant size or fecundity changes accompanied the diapause response. The graded type of diapause response observed across a wide concentration AS concentrations suggests that Daphnia use AS concentration as a proxy for the level of non-specific predation risk. In contrast, the abrupt change of diapause response across a narrow concentration of FK suggests that they were more critical to identify predator origin than level of risk.
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Okamiya H, Kishida O. Proximate stimuli: An overlooked driving force for risk‐induced trait responses affecting interactions in aquatic ecosystems. POPUL ECOL 2022. [DOI: 10.1002/1438-390x.12115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hisanori Okamiya
- Department of Biological Sciences Graduate School of Sciences, Tokyo Metropolitan University Hachioji Tokyo Japan
| | - Osamu Kishida
- Tomakomai Experimental Forest, Field Science Center for Northern Biosphere, Hokkaido University Takaoka Tomakomai Japan
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5
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Oda Y, Sakamoto M, Miyabara Y. Colony Formation in Three Species of the Family Scenedesmaceae (Desmodesmus subspicatus, Scenedesmus Acutus, Tetradesmus Dimorphus) Exposed to Sodium Dodecyl Sulfate and its Interference with Grazing of DAPHNIA Galeata. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 82:37-47. [PMID: 34535811 DOI: 10.1007/s00244-021-00890-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
By mimicking the info-chemicals emitted by grazers, the common anionic surfactant sodium dodecyl sulfate (SDS) can induce colony formation in the green algal genus Scenedesmus at environmentally relevant concentrations. The morphometric effects can hinder the feeding efficiency of grazers, reducing energy flow along the pelagic food chain from Scenedesmus to consumers. Despite this potential ecological risk, few studies exist on whether the SDS-triggered induction of colonies is common in other species of the family Scenedesmaceae. Here, we investigated the effects of SDS on the growth and morphology of three species of Scenedesmaceae (Desmodesmus subspicatus, Scenedesmus acutus, and Tetradesmus dimorphus) and on the clearance rates of Daphnia galeata grazing on the SDS-induced colonies. SDS triggered colony formation in all algal species at concentrations nonlethal to them (0.1-10 mg L-1) in 72 h; however, the induction levels of colony formation were generally lower than for those in the Daphnia culture medium. We also found that the SDS-induced colonial algae reduced D. galeata clearance rates. Our results highlight the potential effect of SDS on the Daphnia-Scenedesmaceae system by triggering the morphological response of Scenedesmaceae at concentrations below those that exert toxicity. Such disruptive effects of pollutants on predator-prey interactions should be considered within the framework of ecological risk assessments.
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Affiliation(s)
- Yusuke Oda
- Department of Science and Technology, Shinshu University, Matsumoto, Nagano, Japan.
| | - Masaki Sakamoto
- Department of Environmental and Civil Engineering, Toyama Prefectural University, Imizu, Toyama, Japan
| | - Yuichi Miyabara
- Suwa Hydrobiological Station, Faculty of Science, Shinshu University, Suwa, Nagano, Japan
- Institute of Mountain Science, Shinshu University, Minamiminowa, Nagano, Japan
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Vilar MCP, da Costa Pena Rodrigues TF, da Silva Ferrão-Filho A, de Oliveira E Azevedo SMF. Grazer-Induced Chemical Defense in a Microcystin-Producing Microcystis aeruginosa (Cyanobacteria) Exposed to Daphnia gessneri Infochemicals. J Chem Ecol 2021; 47:847-858. [PMID: 34569003 DOI: 10.1007/s10886-021-01315-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/09/2021] [Accepted: 09/14/2021] [Indexed: 10/20/2022]
Abstract
Cyanobacteria are photosynthetic microorganisms that compose phytoplankton and therefore have a trophic relationship with zooplankton, which represent an important link for energy flux in aquatic food webs. Several species can form blooms and produce bioactive metabolites known as cyanotoxins. However, the ecological and adaptative role of these toxins are still under debate. Many studies have addressed the cyanotoxins' function in defense against herbivory when grazing pressure by zooplankton plays a role in phytoplankton top-down control. Thus, the present study evaluated the ecophysiological responses of the cyanobacterial strain Microcystis aeruginosa NPLJ-4 underlying the chemical induced defense against the cladoceran Daphnia gessneri. Exposure to predator infochemicals consisted of cultures established in ASM-1 medium prepared in a filtrate from a culture of adults of D. gessneri at an environmentally relevant density. Daphnia infochemicals promoted a significant increase in toxin production by M. aeruginosa. However, no differences in growth were observed, despite a significant increase in both maximum photosynthetic efficiency and electron transport rate in response to zooplankton. Additionally, there was no significant variation in the production of exopolysaccharides. Overall, although a grazer-induced defense response was demonstrated, there were no effects on M. aeruginosa fitness, which maintained its growth in the presence of Daphnia alarm cues.
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Affiliation(s)
- Mauro Cesar Palmeira Vilar
- Laboratory of Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, 21949-902, Brazil.
| | - Thiago Ferreira da Costa Pena Rodrigues
- Laboratory of Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, 21949-902, Brazil
| | - Aloysio da Silva Ferrão-Filho
- Laboratory of Evaluation and Promotion of Environmental Health, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Sandra Maria Feliciano de Oliveira E Azevedo
- Laboratory of Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, 21949-902, Brazil
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Vilar MCP, Rodrigues TFCP, Silva LO, Pacheco ABF, Ferrão-Filho AS, Azevedo SMFO. Ecophysiological Aspects and sxt Genes Expression Underlying Induced Chemical Defense in STX-Producing Raphidiopsis raciborskii (Cyanobacteria) against the Zooplankter Daphnia gessneri. Toxins (Basel) 2021; 13:406. [PMID: 34200983 PMCID: PMC8230027 DOI: 10.3390/toxins13060406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 11/16/2022] Open
Abstract
Cyanobacteria stand out among phytoplankton when they form massive blooms and produce toxins. Because cyanotoxin genes date to the origin of metazoans, the hypothesis that cyanotoxins function as a defense against herbivory is still debated. Although their primary cellular function might vary, these metabolites could have evolved as an anti-predator response. Here we evaluated the physiological and molecular responses of a saxitoxin-producing Raphidiopsis raciborskii to infochemicals released by the grazer Daphnia gessneri. Induced chemical defenses were evidenced in R. raciborskii as a significant increase in the transcription level of sxt genes, followed by an increase in saxitoxin content when exposed to predator cues. Moreover, cyanobacterial growth decreased, and no significant effects on photosynthesis or morphology were observed. Overall, the induced defense response was accompanied by a trade-off between toxin production and growth. These results shed light on the mechanisms underlying zooplankton-cyanobacteria interactions in aquatic food webs. The widespread occurrence of the cyanobacterium R. raciborskii in freshwater bodies has been attributed to its phenotypic plasticity. Assessing the potential of this species to thrive over interaction filters such as zooplankton grazing pressure can enhance our understanding of its adaptive success.
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Affiliation(s)
- Mauro C. P. Vilar
- Laboratory Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21949-902, Brazil; (T.F.C.P.R.); (L.O.S.); (S.M.F.O.A.)
| | - Thiago F. C. P. Rodrigues
- Laboratory Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21949-902, Brazil; (T.F.C.P.R.); (L.O.S.); (S.M.F.O.A.)
| | - Luan O. Silva
- Laboratory Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21949-902, Brazil; (T.F.C.P.R.); (L.O.S.); (S.M.F.O.A.)
| | - Ana Beatriz F. Pacheco
- Laboratory Biological Physics, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21949-902, Brazil;
| | - Aloysio S. Ferrão-Filho
- Laboratory of Evaluation and Promotion of Environmental Health, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro 21040-360, Brazil;
| | - Sandra M. F. O. Azevedo
- Laboratory Ecophysiology and Toxicology of Cyanobacteria, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21949-902, Brazil; (T.F.C.P.R.); (L.O.S.); (S.M.F.O.A.)
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8
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Ospina-Serna J, Huber P, Odriozola M, Fermani P, Unrein F. Picocyanobacteria aggregation as a response to predation pressure: direct contact is not necessary. FEMS Microbiol Ecol 2020; 96:5899723. [DOI: 10.1093/femsec/fiaa153] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 08/28/2020] [Indexed: 01/08/2023] Open
Abstract
ABSTRACT
Picocyanobacteria (cells <2 µm) can be found either as single-cells (Pcy) or embedded in a mucilaginous sheath as microcolonies or colonies (CPcy). It has been demonstrated that phenotypic plasticity in picocyanobacteria (i.e. the capability of single-cells to aggregate into colonies) can be induced as a response to grazing pressure. The effect of the presence of different predators (cladocerans and rotifers) on the morphological composition of picocyanobacteria was studied in a natural community, and it was observed that the abundance of CPcy significantly increased in all treatments with zooplankton compared with the control without zooplankton. The aggregation capability was also evaluated in a single-cell strain by adding a conditioned medium of flagellates, rotifers and cladocerans. The proportion of cells forming colonies was significantly higher in all treatments with conditioned medium regardless of the predator. These results suggest that the aggregation of Pcy can be induced as a response to the predation pressure exerted by protists and different zooplankters, and also that Pcy has the capability to aggregate into CPcy even without direct contact with any predator, most probably due to the presence of an infochemical dissolved in the water that does not come from disrupted Pcy cells.
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Affiliation(s)
- Juliana Ospina-Serna
- Instituto Tecnológico de Chascomús (INTECH), UNSAM-CONICET. Av. Intendente Marino Km 8,200, (7130) Chascomús, Buenos Aires, Argentina
| | - Paula Huber
- Instituto Tecnológico de Chascomús (INTECH), UNSAM-CONICET. Av. Intendente Marino Km 8,200, (7130) Chascomús, Buenos Aires, Argentina
- Instituto Nacional de Limnología (INALI), CONICET-UNL. Ciudad Universitaria - Paraje el Pozo s/n, (3000) Santa Fé, Argentina
| | - Mariana Odriozola
- Instituto Tecnológico de Chascomús (INTECH), UNSAM-CONICET. Av. Intendente Marino Km 8,200, (7130) Chascomús, Buenos Aires, Argentina
| | - Paulina Fermani
- Instituto Tecnológico de Chascomús (INTECH), UNSAM-CONICET. Av. Intendente Marino Km 8,200, (7130) Chascomús, Buenos Aires, Argentina
| | - Fernando Unrein
- Instituto Tecnológico de Chascomús (INTECH), UNSAM-CONICET. Av. Intendente Marino Km 8,200, (7130) Chascomús, Buenos Aires, Argentina
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Zhu X, Wang Z, Sun Y, Gu L, Zhang L, Wang J, Huang Y, Yang Z. Surfactants at environmentally relevant concentrations interfere the inducible defense of Scenedesmus obliquus and the implications for ecological risk assessment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114131. [PMID: 32066053 DOI: 10.1016/j.envpol.2020.114131] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 01/21/2020] [Accepted: 02/03/2020] [Indexed: 05/07/2023]
Abstract
The ecotoxicology of surfactants is attracting wide attention due to the rapidly expanding global application. As interspecific relationships play one of the central roles in structuring biological communities, it is necessary to take it into risk assessments on surfactants. With this aim, our study investigated the interference of three common surfactants on the inducible defense of a freshwater phytoplankton Scenedesmus obliquus. Nonlethal environmentally relevant concentrations (10 and 100 μg L-1) of several surfactants were set up. Results showed that growth and photosynthetic efficiency of Scenedesmus were inhibited during first 96 h, but recovered in the later stage. Surfactants interfered inducible defense of Scenedesmus against Daphnia grazing, and the interference was related to chemical characteristics of surfactants. The anionic surfactant sodium dodecyl sulfate (SDS) enhanced the colony formation even without grazing cues, whereas fewer defensive colonies were formed under the effects of cationic surfactant benzalkonium bromide (BZK) and nonionic surfactant polyoxyethylene (40) nonylphenol ether (NPE). These findings highlighted the sensitivity of grazer-induced morphological defense of Scenedesmus to surfactants even at nonlethal concentrations, which potentially affects the energy and information flow between trophic levels. This study appeals for more attention to take interspecific relationships into consideration in assessing the potential ecological risk of pollutants.
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Affiliation(s)
- Xuexia Zhu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China; Department of Marine Biology, College of Oceanography, Hohai University, 1 Xikang Road, Nanjing 210098, China
| | - Zeshuang Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Yunfei Sun
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Lei Gu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Lu Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Jun Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Yuan Huang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Zhou Yang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China.
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Roccuzzo S, Couto N, Karunakaran E, Kapoore RV, Butler TO, Mukherjee J, Hansson EM, Beckerman AP, Pandhal J. Metabolic Insights Into Infochemicals Induced Colony Formation and Flocculation in Scenedesmus subspicatus Unraveled by Quantitative Proteomics. Front Microbiol 2020; 11:792. [PMID: 32457714 PMCID: PMC7220994 DOI: 10.3389/fmicb.2020.00792] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 04/02/2020] [Indexed: 01/15/2023] Open
Abstract
Microalgae can respond to natural cues from crustacean grazers, such as Daphnia, by forming colonies and aggregations called flocs. Combining microalgal biology, physiological ecology, and quantitative proteomics, we identified how infochemicals from Daphnia trigger physiological and cellular level changes in the microalga Scenedesmus subspicatus, underpinning colony formation and flocculation. We discovered that flocculation occurs at an energy-demanding ‘alarm’ phase, with an important role proposed in cysteine synthesis. Flocculation appeared to be initially stimulated by the production of an extracellular matrix where polysaccharides and fatty acids were present, and later sustained at an ‘acclimation’ stage through mitogen-activated protein kinase (MAPK) signaling cascades. Colony formation required investment into fatty acid metabolism, likely linked to separation of membranes during cell division. Higher energy demands were required at the alarm phase, which subsequently decreased at the acclimation stage, thus suggesting a trade-off between colony formation and flocculation. From an ecological and evolutionary perspective, our findings represent an improved understanding of the effect of infochemicals on microalgae-grazers interactions, and how they can therefore potentially impact on the structure of aquatic communities. Moreover, the mechanisms revealed are of interest in algal biotechnology, for exploitation in low-cost, sustainable microalgal biomass harvesting.
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Affiliation(s)
- Sebastiana Roccuzzo
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Narciso Couto
- Centre for Applied Pharmacokinetic Research, The University of Manchester, Manchester, United Kingdom
| | - Esther Karunakaran
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Rahul Vijay Kapoore
- Department of Biosciences, College of Science, Swansea University, Swansea, United Kingdom
| | - Thomas O Butler
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Joy Mukherjee
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Erika M Hansson
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Andrew P Beckerman
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Jagroop Pandhal
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, United Kingdom
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Abstract
Phenotypic plasticity in defensive traits is an appropriate mechanism to cope with the variable hazard of a frequently changing predator spectrum. In the animal kingdom these so-called inducible defences cover the entire taxonomic range from protozoans to vertebrates. The inducible defensive traits range from behaviour, morphology, and life-history adaptations to the activation of specific immune systems in vertebrates. Inducible defences in prey species play important roles in the dynamics and functioning of food webs. Freshwater zooplankton show the most prominent examples of inducible defences triggered by chemical cues, so-called kairomones, released by predatory invertebrates and fish. The objective of this review is to highlight recent progress in research on inducible defences in freshwater zooplankton concerning behaviour, morphology, and life-history, as well as difficulties of studies conducted in a multipredator set up. Furthermore, we outline costs associated with the defences and discuss difficulties as well as the progress made in characterizing defence-inducing cues. Finally, we aim to indicate further possible routes in this field of research and provide a comprehensive table of inducible defences with respect to both prey and predator species.
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12
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Bioactive Aliphatic Sulfates from Marine Invertebrates. Mar Drugs 2019; 17:md17090527. [PMID: 31505775 PMCID: PMC6780655 DOI: 10.3390/md17090527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 01/25/2023] Open
Abstract
The occurrence of sulfated steroids and phenolics in marine organisms is quite widespread, being typically reported from Echinoderms. In contrast, alkane and alkene aliphatic sulfates are considerably rarer with examples being reported from a diverse array of organisms including echinoderms, sponges and ascidians. While no ecological roles for these metabolites have been proposed, they do exhibit a diverse array of biological activities including thrombin inhibition; the ability to induce metamorphosis in larvae; antiproliferative, antibacterial and antifungal properties; and metalloproteinase inhibition. Of particular interest and an avenue for future development is the finding of antifouling properties with low or nontoxic effects to the environment. This review focuses on alkyl sulfates and related sulfamates, their structures and biological activities. Spectroscopic and spectrometric techniques that can be used to recognize the presence of sulfate groups are also discussed, data for which will enhance the ability of researchers to recognize this class of chemically- and biologically-interesting marine natural products.
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13
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Abstract
The water flea Daphnia moves to deeper waters to avoid predators when it detects a chemical produced by fish.
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Affiliation(s)
- Georg Pohnert
- Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Jena, Germany.,Max Planck Institute for Chemical Ecology, Jena, Germany
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14
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Weiss LC. Sensory Ecology of Predator-Induced Phenotypic Plasticity. Front Behav Neurosci 2019; 12:330. [PMID: 30713490 PMCID: PMC6345714 DOI: 10.3389/fnbeh.2018.00330] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 12/13/2018] [Indexed: 12/12/2022] Open
Abstract
Ecological communities are organized in trophic levels that share manifold interactions forming complex food webs. Infochemicals can further modify these interactions, e.g., by inducing defenses in prey. The micro-crustacean Daphnia is able to respond to predator-specific chemical cues indicating an increased predation risk. Daphnia shows plastic responses by adapting its morphology, behavior, and physiology, increasing organism, and population fitness. This stabilizes community structures. This review will describe the progress that has been made in understanding the high degree of plasticity observed in the model crustacean Daphnia. I summarize current knowledge on the processes of predator detection, ranging from the nature of biologically active chemical cues to the underlying neurophysiological mechanisms. With this, I aim to provide a comprehensive overview on the molecular mechanisms of ad hoc environmental phenotypic adaptation. In times of climate change and pollution understanding information transfer in aquatic systems is valuable as it will allow us to predict whether and how community structures are being affected.
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Affiliation(s)
- Linda C. Weiss
- Department of Animal Ecology, Evolution and Biodiversity, Ruhr University Bochum, Bochum, Germany
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15
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Gössinger E. Chemistry of the Secondary Metabolites of Termites. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2019; 109:1-384. [PMID: 31637529 DOI: 10.1007/978-3-030-12858-6_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Isolation, structure determination, synthesis, and biochemistry of the low-molecular-weight compounds of the secretion of exocrine glands of termites are described, with an emphasis on pheromones and defensive compounds.
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Affiliation(s)
- Edda Gössinger
- Institute of Chemistry, University of Vienna, Vienna, Austria.
- , Mistelbach, Austria.
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16
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Weiss LC, Albada B, Becker SM, Meckelmann SW, Klein J, Meyer M, Schmitz OJ, Sommer U, Leo M, Zagermann J, Metzler-Nolte N, Tollrian R. Identification of Chaoborus kairomone chemicals that induce defences in Daphnia. Nat Chem Biol 2018; 14:1133-1139. [DOI: 10.1038/s41589-018-0164-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 10/11/2018] [Indexed: 11/09/2022]
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17
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Liu Z, Kariya MJ, Chute CD, Pribadi AK, Leinwand SG, Tong A, Curran KP, Bose N, Schroeder FC, Srinivasan J, Chalasani SH. Predator-secreted sulfolipids induce defensive responses in C. elegans. Nat Commun 2018; 9:1128. [PMID: 29555902 PMCID: PMC5859177 DOI: 10.1038/s41467-018-03333-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 02/02/2018] [Indexed: 01/03/2023] Open
Abstract
Animals respond to predators by altering their behavior and physiological states, but the underlying signaling mechanisms are poorly understood. Using the interactions between Caenorhabditis elegans and its predator, Pristionchus pacificus, we show that neuronal perception by C. elegans of a predator-specific molecular signature induces instantaneous escape behavior and a prolonged reduction in oviposition. Chemical analysis revealed this predator-specific signature to consist of a class of sulfolipids, produced by a biochemical pathway required for developing predacious behavior and specifically induced by starvation. These sulfolipids are detected by four pairs of C. elegans amphid sensory neurons that act redundantly and recruit cyclic nucleotide-gated (CNG) or transient receptor potential (TRP) channels to drive both escape and reduced oviposition. Functional homology of the delineated signaling pathways and abolishment of predator-evoked C. elegans responses by the anti-anxiety drug sertraline suggests a likely conserved or convergent strategy for managing predator threats.
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Affiliation(s)
- Zheng Liu
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Maro J Kariya
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Christopher D Chute
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA, 01605, USA
| | - Amy K Pribadi
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Sarah G Leinwand
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Ada Tong
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Kevin P Curran
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Neelanjan Bose
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Frank C Schroeder
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Jagan Srinivasan
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA, 01605, USA
| | - Sreekanth H Chalasani
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA.
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, USA.
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18
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Petkowski JJ, Bains W, Seager S. Natural Products Containing a Nitrogen-Sulfur Bond. JOURNAL OF NATURAL PRODUCTS 2018; 81:423-446. [PMID: 29364663 DOI: 10.1021/acs.jnatprod.7b00921] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Only about 100 natural products are known to contain a nitrogen-sulfur (N-S) bond. This review thoroughly categorizes N-S bond-containing compounds by structural class. Information on biological source, biological activity, and biosynthesis is included, if known. We also review the role of N-S bond functional groups as post-translational modifications of amino acids in proteins and peptides, emphasizing their role in the metabolism of the cell.
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Affiliation(s)
- Janusz J Petkowski
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - William Bains
- Rufus Scientific , 37 The Moor, Melbourn, Royston, Herts SG8 6ED, U.K
| | - Sara Seager
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Physics, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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19
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The Origin and Ecological Function of an Ion Inducing Anti-Predator Behavior in Lithobates Tadpoles. J Chem Ecol 2018; 44:178-188. [DOI: 10.1007/s10886-018-0925-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/07/2017] [Accepted: 01/09/2018] [Indexed: 10/18/2022]
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20
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A review of potential methods for zooplankton control in wastewater treatment High Rate Algal Ponds and algal production raceways. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.06.024] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Predator lipids induce paralytic shellfish toxins in bloom-forming algae. Proc Natl Acad Sci U S A 2015; 112:6395-400. [PMID: 25918403 DOI: 10.1073/pnas.1420154112] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Interactions among microscopic planktonic organisms underpin the functioning of open ocean ecosystems. With few exceptions, these organisms lack advanced eyes and thus rely largely on chemical sensing to perceive their surroundings. However, few of the signaling molecules involved in interactions among marine plankton have been identified. We report a group of eight small molecules released by copepods, the most abundant zooplankton in the sea, which play a central role in food webs and biogeochemical cycles. The compounds, named copepodamides, are polar lipids connecting taurine via an amide to isoprenoid fatty acid conjugate of varying composition. The bloom-forming dinoflagellate Alexandrium minutum responds to pico- to nanomolar concentrations of copepodamides with up to a 20-fold increase in production of paralytic shellfish toxins. Different copepod species exude distinct copepodamide blends that contribute to the species-specific defensive responses observed in phytoplankton. The signaling system described here has far reaching implications for marine ecosystems by redirecting grazing pressure and facilitating the formation of large scale harmful algal blooms.
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22
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Fiałkowska E, Pajdak-Stós A. Chemical and mechanical signals in inducingPhormidium(Cyanobacteria) defence against their grazers. FEMS Microbiol Ecol 2014; 89:659-69. [DOI: 10.1111/1574-6941.12367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/30/2014] [Accepted: 06/05/2014] [Indexed: 11/29/2022] Open
Affiliation(s)
- Edyta Fiałkowska
- Institute of Environmental Sciences; Jagiellonian University; Kraków Poland
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23
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Oger C, Balas L, Durand T, Galano JM. Are alkyne reductions chemo-, regio-, and stereoselective enough to provide pure (Z)-olefins in polyfunctionalized bioactive molecules? Chem Rev 2012. [PMID: 23194255 DOI: 10.1021/cr3001753] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Camille Oger
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247, Université Montpellier 1, Faculté de Pharmacie, 15 av. Charles Flahault, Bât. D, 34093 Montpellier Cedex 05, France
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24
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Maszczyk P, Bartosiewicz M. Threat or treat: the role of fish exudates in the growth and life history ofDaphnia. Ecosphere 2012. [DOI: 10.1890/es12-00146.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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25
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Lürling M, de Lange HJ, Peeters ETHM. Effects of an anionic surfactant (FFD-6) on the energy and information flow between a primary producer (Scenedesmus obliquus) and a consumer (Daphnia magna). ECOTOXICOLOGY (LONDON, ENGLAND) 2011; 20:1881-9. [PMID: 21717111 PMCID: PMC3195817 DOI: 10.1007/s10646-011-0726-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/16/2011] [Indexed: 05/23/2023]
Abstract
The effects of a commercially available anionic surfactant solution (FFD-6) on growth and morphology of a common green alga (Scenedesmus obliquus) and on survival and clearance rates of the water flea Daphnia magna were studied. The surfactant-solution elicited a morphological response (formation of colonies) in Scenedesmus at concentrations of 10-100 μl l(-1) that were far below the No Observed Effect Concentration (NOEC) value of 1,000 μl l(-1) for growth inhibition. The NOEC-value of FFD-6 for colony-induction was 3 μl l(-1). Daphnia survival was strongly affected by FFD-6, yielding LC(50-24h) and LC(50-48 h) of 148 and 26 μl l(-1), respectively. In addition, clearance rates of Daphnia feeding on unicellular Scenedesmus were inhibited by FFD-6, yielding a 50% inhibition (EC(50-1.5h)) at 5.2 μl l(-1) with a NOEC of 0.5 μl l(-1). When Daphnia were offered FFD-6-induced food in which eight-celled colonies (43 × 29 μm) were most abundant, clearance rates (~0.14 ml ind.(-1) h(-1)) were only 25% the rates of animals that were offered non-induced unicellular (15 × 5 μm) Scenedesmus (~0.56 ml ind.(-1) h(-1)). As FFD-6 concentrations in the treated food used in the experiments were far below the NOEC for clearance rate inhibition, it is concluded that the feeding rate depression was caused by the altered morphology of the Scenedesmus moving them out of the feeding window of the daphnids. The surfactant evoked a response in Scenedesmus that is similar to the natural chemically induced defensive reaction against grazers and could disrupt the natural information conveyance between these plankton organisms.
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Affiliation(s)
- M Lürling
- Aquatic Ecology and Water Quality Management Group, Department of Environmental Sciences, Wageningen University, P.O. Box 47, 6700 AA, Wageningen, The Netherlands.
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26
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Lürling M. Metribuzin impairs the unicell-colony transformation in the green alga Scenedesmus obliquus. CHEMOSPHERE 2011; 82:411-417. [PMID: 20971494 DOI: 10.1016/j.chemosphere.2010.09.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Revised: 09/14/2010] [Accepted: 09/26/2010] [Indexed: 05/30/2023]
Abstract
Active growth is a prerequisite for the formation of grazing-protective, mostly eight-celled colonies by the ubiquitous green alga Scenedesmus in response to chemical cues from zooplankton. Colonies can also be evoked by chemically quite similar manmade anionic surfactants, such as FFD-6. In this study, it was hypothesized that growth-inhibiting concentrations of the herbicide metribuzin impair the ability of Scenedesmus obliquus to form colonies in response to the surfactant morphogen FFD-6. The results confirmed that the formation of colonies in S. obliquus was hampered by metribuzin. EC50 values of metribuzin for colony inhibition (approximately 11 μg L(-1)) were similar to those for growth and photosynthesis inhibition (12-25 μg metribuzinL(-1)). In the absence of the colony-inducing surfactant FFD-6, S. obliquus populations were comprised of 92% unicells, having on average 1.2 cells per colony at all tested metribuzin concentrations (0-100 μg L(-1)). In contrast, in the presence of FFD-6 and at low metribuzin concentrations (0 and 5 μg L(-1)), S. obliquus had more than five cells per colony with a high portion of eight-celled colonies. However, increasing concentrations of metribuzin decreased the number of colonies in the FFD-6-exposed populations and caused them to remain mostly unicellular at the highest concentrations (50 and 100 μg L(-1)). This study revealed that metribuzin impeded growth and by doing so, also obstructed the possibility for unicellular Scenedesmus to form colonies. Consequently, an increase in mortality of Scenedesmus from grazing is expected.
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Affiliation(s)
- M Lürling
- Department Environmental Sciences, Aquatic Ecology & Water Quality Management Group, Wageningen University, PO Box 8080, 6700 DD Wageningen, The Netherlands.
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27
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Yokota K, Sterner RW. Trade-offs limiting the evolution of coloniality: ecological displacement rates used to measure small costs. Proc Biol Sci 2010; 278:458-63. [PMID: 20739317 DOI: 10.1098/rspb.2010.1459] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Multicellular organisms that benefit from division of labour are presumably descended from colonial species that initially derived benefits from larger colony size, before the evolution of specialization. Life in a colony can have costs as well as benefits, but these can be hard to measure. We measured physiological costs to life in a colony using a novel method based on population dynamics, comparing growth rates of unicells and kairomone-induced colonies of a green alga Desmodesmus subspicatus against a reference co-occurring species. Coloniality negatively affected growth during the initial log growth phase, while no adverse effect was detected under nutrient-limited competitive conditions. The results point to costs associated with traits involved in rapid growth rather than those associated with efficient growth under resource scarcity. Some benefits of coloniality (e.g. defence from herbivory) may be different from when this trait evolved, but our approach shows how costs would have depended on conditions.
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Affiliation(s)
- Kiyoko Yokota
- Department of Ecology, Evolution and Behavior, University of Minnesota, 1987 Upper Buford Circle, Saint Paul, MN 55108, USA
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28
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Latta IV LC, O'Donnell RP, Pfrender ME. Vertical distribution ofChlamydomonaschanges in response to grazer and predator kairomones. OIKOS 2009. [DOI: 10.1111/j.1600-0706.2009.17352.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Santalova EA, Denisenko VA, Berdyshev DV, Aminin DL, Sanamyan KE. 6-Bromo-5-hydroxyindolyl-3-glyoxylate from the Far Eastern Ascidian Syncarpa oviformis. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800301007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The ethanol extract of the marine ascidian Syncarpa oviformis (Kuril Islands, Russia) has been shown to contain three indole derivatives, ethyl indolyl-3-glyoxylate (1), ethyl 6-bromoindolyl-3-glyoxylate (2), and ethyl 6-bromo-5-hydroxyindolyl-3-glyoxylate (3), along with p-hydroxyphenylglyoxylate, 2,6-dimethylheptyl sulfate and (3 Z)-3-decenyl sulfate. The structure of the novel compound 3 has been elucidated on the basis of NMR, MS, IR and UV analyses.
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Affiliation(s)
- Elena A. Santalova
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
| | - Vladimir A. Denisenko
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
| | - Dmitry V. Berdyshev
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
| | - Dmitry L. Aminin
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
| | - Karen E. Sanamyan
- Kamchatka Branch of the Pacific Institute of Geography FEB RAS, Petropavlovsk-Kamchatsky 683000, Partizanskaya, 6, Russia
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30
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Leflaive J, Lacroix G, Nicaise Y, Ten-Hage L. Colony induction and growth inhibition in Desmodesmus quadrispina (Chlorococcales) by allelochemicals released from the filamentous alga Uronema confervicolum (Ulotrichales). Environ Microbiol 2008; 10:1536-46. [DOI: 10.1111/j.1462-2920.2008.01569.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Bergkvist J, Selander E, Pavia H. Induction of toxin production in dinoflagellates: the grazer makes a difference. Oecologia 2008; 156:147-54. [PMID: 18283499 DOI: 10.1007/s00442-008-0981-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Accepted: 01/21/2008] [Indexed: 11/30/2022]
Abstract
The dinoflagellate Alexandrium minutum has previously been shown to produce paralytic shellfish toxins (PST) in response to waterborne cues from the copepod Acartia tonsa. In order to investigate if grazer-induced toxin production is a general or grazer-specific response of A. minutum to calanoid copepods, we exposed two strains of A. minutum to waterborne cues from three other species of calanoid copepods, Acartia clausi, Centropages typicus and Pseudocalanus sp. Both A. minutum strains responded to waterborne cues from Centropages and Acartia with significantly increased cell-specific toxicity. Waterborne cues from Centropages caused the strongest response in the A. minutum cells, with 5 to >20 times higher toxin concentrations compared to controls. In contrast, neither of the A. minutum strains responded with significantly increased toxicity to waterborne cues from Pseudocalanus. The absolute increase in PST content was proportional to the intrinsic toxicity of the different A. minutum strains that were used. The results show that grazer-induced PST production is a grazer-specific response in A. minutum, and its potential ecological importance will thus depend on the composition of the zooplankton community, as well as the intrinsic toxin-producing properties of the A. minutum population.
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Affiliation(s)
- Johanna Bergkvist
- Department of Marine Ecology, Göteborg University, Tjärnö Marine Biological Laboratory, 452 96 Strömstad, Sweden
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Uchida H, Yasumoto K, Nishigami A, Zweigenbaum JA, Kusumi T, Ooi T. Time-of-Flight LC/MS Identification and Confirmation of a Kairomone in Daphnia magnaCultured Medium. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Yasumoto K, Nishigami A, Aoi H, Tsuchihashi C, Kasai F, Kusumi T, Ooi T. Isolation and Absolute Configuration Determination of Aliphatic Sulfates as the Daphnia Kairomones Inducing Morphological Defense of a Phytoplankton-Part 2. Chem Pharm Bull (Tokyo) 2008; 56:129-32. [DOI: 10.1248/cpb.56.129] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ko Yasumoto
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Akinori Nishigami
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Hiroaki Aoi
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Chise Tsuchihashi
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Fumie Kasai
- National Institute for Environmental Studies
| | - Takenori Kusumi
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Takashi Ooi
- Institute of Health Biosciences, The University of Tokushima Graduate School
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34
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Yasumoto K, Nishigami A, Aoi H, Tsuchihashi C, Kasai F, Kusumi T, Ooi T. Isolation of New Aliphatic Sulfates and Sulfamate as the Daphnia Kairomones Inducing Morphological Change of a Phytoplankton Scenedesmus gutwinskii. Chem Pharm Bull (Tokyo) 2008; 56:133-6. [DOI: 10.1248/cpb.56.133] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ko Yasumoto
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Akinori Nishigami
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Hiroaki Aoi
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Chise Tsuchihashi
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Fumie Kasai
- National Institute for Environmental Studies
| | - Takenori Kusumi
- Institute of Health Biosciences, The University of Tokushima Graduate School
| | - Takashi Ooi
- Institute of Health Biosciences, The University of Tokushima Graduate School
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Pohnert G, Steinke M, Tollrian R. Chemical cues, defence metabolites and the shaping of pelagic interspecific interactions. Trends Ecol Evol 2007; 22:198-204. [PMID: 17275948 DOI: 10.1016/j.tree.2007.01.005] [Citation(s) in RCA: 175] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Revised: 12/20/2006] [Accepted: 01/22/2007] [Indexed: 10/23/2022]
Abstract
Several observations and model calculations suggest that chemically mediated interactions can structure planktonic food webs. However, only recently have improvements in chemical methods, coupled with ecological assays, led to the characterization of chemical cues that affect the behaviour and/or physiology of planktonic organisms. We are currently beginning to elucidate if or how chemical signals can directly affect the interactions between species and even shape complex community structures in aquatic systems. Here, we highlight recent research on the nature and action of chemical signals in the pelagic marine and freshwater environments, with an emphasis on kairomones and defence metabolites.
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Affiliation(s)
- Georg Pohnert
- Laboratory of Chemical Ecology, Institute of Chemical Sciences and Chemical Engineering, Batochimie, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
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37
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Yasumoto K, Nishigami A, Kasai F, Kusumi T, Ooi T. Isolation and Absolute Configuration Determination of Aliphatic Sulfates as the Daphnia Kairomones Inducing Morphological Defense of a Phytoplankton. Chem Pharm Bull (Tokyo) 2006; 54:271-4. [PMID: 16462083 DOI: 10.1248/cpb.54.271] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
2,6-Dimethylheptyl sulfate (1) and 6-methyloctyl sulfate (3) were isolated from Daphnia pulex as the Daphnia kairomones that induced morphological defense of a freshwater phytoplankton Scenedesmus gutwinskii var. heterospina (NIES-802). The absolute stereochemistry at C2 of 1 was determined by (1)H-NMR analysis of the (R)-MTPA ester of alcohol 2. The absolute configuration at C6 of 3 was determined by Ohrui's method applied to alcohol 4.
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Affiliation(s)
- Ko Yasumoto
- Graduate School of Pharmaceutical Sciences, Tokushima University, Japan
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