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Allelopathic interactions between the brown algal genus Lobophora (Dictyotales, Phaeophyceae) and scleractinian corals

Christophe Vieira UGent, Olivier P Thomas, Gérald Culioli, Grégory Genta-Jouve, Fanny Houlbreque, Julie Gaubert, Olivier De Clerck UGent and Claude E Payri (2016) SCIENTIFIC REPORTS. 6.
abstract
Allelopathy has been recently suggested as a mechanism by which macroalgae may outcompete corals in damaged reefs. Members of the brown algal genus Lobophora are commonly observed in close contact with scleractinian corals and have been considered responsible for negative effects of macroalgae to scleractinian corals. Recent field assays have suggested the potential role of chemical mediators in this interaction. We performed in situ bioassays testing the allelopathy of crude extracts and isolated compounds of several Lobophora species, naturally associated or not with corals, against four corals in New Caledonia. Our results showed that, regardless of their natural association with corals, organic extracts from species of the genus Lobophora are intrinsically capable of bleaching some coral species upon direct contact. Additionally, three new C-21 polyunsaturated alcohols named lobophorenols A-C (1-3) were isolated and identified. Significant all elopathic effects against Acropora muricata were identified for these compounds. In situ observations in New Caledonia, however, indicated that while allelopathic interactions are likely to occur at the macroalgal-coral interface, Lobophora spp. rarely bleached their coral hosts. These findings are important toward our understanding of the importance of allelopathy versus other processes such as herbivory in the interaction between macroalgae and corals in reef ecosystems.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
VARIEGATA PHAEOPHYCEAE, MASS-SPECTROMETRY, MARINE CHEMICAL ECOLOGY, URCHIN DIADEMA-ANTILLARUM, PHASE-SHIFTS, HARD CORAL, REEF, MACROALGAE, SEAWEED, DEFENSE, LOBOPHORA
journal title
SCIENTIFIC REPORTS
Sci. Rep.
volume
6
article number
18637
pages
11 pages
Web of Science type
Article
Web of Science id
000368254600001
JCR category
MULTIDISCIPLINARY SCIENCES
JCR impact factor
4.259 (2016)
JCR rank
10/64 (2016)
JCR quartile
1 (2016)
ISSN
2045-2322
DOI
10.1038/srep18637
language
English
UGent publication?
yes
classification
A1
copyright statement
I have retained and own the full copyright for this publication
id
7151332
handle
http://hdl.handle.net/1854/LU-7151332
date created
2016-03-17 09:09:52
date last changed
2017-03-02 14:55:40
@article{7151332,
  abstract     = {Allelopathy has been recently suggested as a mechanism by which macroalgae may outcompete corals in damaged reefs. Members of the brown algal genus Lobophora are commonly observed in close contact with scleractinian corals and have been considered responsible for negative effects of macroalgae to scleractinian corals. Recent field assays have suggested the potential role of chemical mediators in this interaction. We performed in situ bioassays testing the allelopathy of crude extracts and isolated compounds of several Lobophora species, naturally associated or not with corals, against four corals in New Caledonia. Our results showed that, regardless of their natural association with corals, organic extracts from species of the genus Lobophora are intrinsically capable of bleaching some coral species upon direct contact. Additionally, three new C-21 polyunsaturated alcohols named lobophorenols A-C (1-3) were isolated and identified. Significant all elopathic effects against Acropora muricata were identified for these compounds. In situ observations in New Caledonia, however, indicated that while allelopathic interactions are likely to occur at the macroalgal-coral interface, Lobophora spp. rarely bleached their coral hosts. These findings are important toward our understanding of the importance of allelopathy versus other processes such as herbivory in the interaction between macroalgae and corals in reef ecosystems.},
  articleno    = {18637},
  author       = {Vieira, Christophe and Thomas, Olivier P and Culioli, G{\'e}rald and Genta-Jouve, Gr{\'e}gory and Houlbreque, Fanny and Gaubert, Julie and De Clerck, Olivier and Payri, Claude E},
  issn         = {2045-2322},
  journal      = {SCIENTIFIC REPORTS},
  keyword      = {VARIEGATA PHAEOPHYCEAE,MASS-SPECTROMETRY,MARINE CHEMICAL ECOLOGY,URCHIN DIADEMA-ANTILLARUM,PHASE-SHIFTS,HARD CORAL,REEF,MACROALGAE,SEAWEED,DEFENSE,LOBOPHORA},
  language     = {eng},
  pages        = {11},
  title        = {Allelopathic interactions between the brown algal genus Lobophora (Dictyotales, Phaeophyceae) and scleractinian corals},
  url          = {http://dx.doi.org/10.1038/srep18637},
  volume       = {6},
  year         = {2016},
}

Chicago
Vieira, Christophe, Olivier P Thomas, Gérald Culioli, Grégory Genta-Jouve, Fanny Houlbreque, Julie Gaubert, Olivier De Clerck, and Claude E Payri. 2016. “Allelopathic Interactions Between the Brown Algal Genus Lobophora (Dictyotales, Phaeophyceae) and Scleractinian Corals.” Scientific Reports 6.
APA
Vieira, C., Thomas, O. P., Culioli, G., Genta-Jouve, G., Houlbreque, F., Gaubert, J., De Clerck, O., et al. (2016). Allelopathic interactions between the brown algal genus Lobophora (Dictyotales, Phaeophyceae) and scleractinian corals. SCIENTIFIC REPORTS, 6.
Vancouver
1.
Vieira C, Thomas OP, Culioli G, Genta-Jouve G, Houlbreque F, Gaubert J, et al. Allelopathic interactions between the brown algal genus Lobophora (Dictyotales, Phaeophyceae) and scleractinian corals. SCIENTIFIC REPORTS. 2016;6.
MLA
Vieira, Christophe, Olivier P Thomas, Gérald Culioli, et al. “Allelopathic Interactions Between the Brown Algal Genus Lobophora (Dictyotales, Phaeophyceae) and Scleractinian Corals.” SCIENTIFIC REPORTS 6 (2016): n. pag. Print.