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Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea

Blue Haslea species are marine benthic pennate diatoms able to synthesize a blue-green water-soluble pigment, like marennine produced by H. ostrearia Simonsen. New species of Haslea synthetizing blue pigments were recently described (H. karadagensis, H. nusantara, H. provincialis and H. silbo). Thei...

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Autores principales: Seveno, Julie, Car, Ana, Sirjacobs, Damien, Fullgrabe, Lovina, Dupčić Radić, Iris, Lejeune, Pierre, Leignel, Vincent, Mouget, Jean-Luc
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10672038/
https://www.ncbi.nlm.nih.gov/pubmed/37999407
http://dx.doi.org/10.3390/md21110583
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author Seveno, Julie
Car, Ana
Sirjacobs, Damien
Fullgrabe, Lovina
Dupčić Radić, Iris
Lejeune, Pierre
Leignel, Vincent
Mouget, Jean-Luc
author_facet Seveno, Julie
Car, Ana
Sirjacobs, Damien
Fullgrabe, Lovina
Dupčić Radić, Iris
Lejeune, Pierre
Leignel, Vincent
Mouget, Jean-Luc
author_sort Seveno, Julie
collection PubMed
description Blue Haslea species are marine benthic pennate diatoms able to synthesize a blue-green water-soluble pigment, like marennine produced by H. ostrearia Simonsen. New species of Haslea synthetizing blue pigments were recently described (H. karadagensis, H. nusantara, H. provincialis and H. silbo). Their marennine-like pigments have allelopathic, antioxidative, antiviral and antibacterial properties, which have been demonstrated in laboratory conditions. Marennine is also responsible for the greening of oysters, for example, in the Marennes Oléron area (France), a phenomenon that has economical and patrimonial values. While blue Haslea spp. blooms have been episodically observed in natural environments (e.g., France, Croatia, USA), their dynamics have only been investigated in oyster ponds. This work is the first description of blue Haslea spp. benthic blooms that develop in open environments on the periphyton, covering turf and some macroalgae-like Padina. Different sites were monitored in the Mediterranean Sea (Corsica, France and Croatia) and two different blue Haslea species involved in these blooms were identified: H. ostrearia and H. provincialis. A non-blue Haslea species was also occasionally encountered. The benthic blooms of blue Haslea followed the phytoplankton spring bloom and occurred in shallow calm waters, possibly indicating a prominent role of light to initiate the blooms. In the absence of very strong winds and water currents that can possibly disaggregate the blue biofilm, the end of blooms coincided with the warming of the upper water masses, which might be profitable for other microorganisms and ultimately lead to a shift in the biofilm community.
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spelling pubmed-106720382023-11-08 Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea Seveno, Julie Car, Ana Sirjacobs, Damien Fullgrabe, Lovina Dupčić Radić, Iris Lejeune, Pierre Leignel, Vincent Mouget, Jean-Luc Mar Drugs Article Blue Haslea species are marine benthic pennate diatoms able to synthesize a blue-green water-soluble pigment, like marennine produced by H. ostrearia Simonsen. New species of Haslea synthetizing blue pigments were recently described (H. karadagensis, H. nusantara, H. provincialis and H. silbo). Their marennine-like pigments have allelopathic, antioxidative, antiviral and antibacterial properties, which have been demonstrated in laboratory conditions. Marennine is also responsible for the greening of oysters, for example, in the Marennes Oléron area (France), a phenomenon that has economical and patrimonial values. While blue Haslea spp. blooms have been episodically observed in natural environments (e.g., France, Croatia, USA), their dynamics have only been investigated in oyster ponds. This work is the first description of blue Haslea spp. benthic blooms that develop in open environments on the periphyton, covering turf and some macroalgae-like Padina. Different sites were monitored in the Mediterranean Sea (Corsica, France and Croatia) and two different blue Haslea species involved in these blooms were identified: H. ostrearia and H. provincialis. A non-blue Haslea species was also occasionally encountered. The benthic blooms of blue Haslea followed the phytoplankton spring bloom and occurred in shallow calm waters, possibly indicating a prominent role of light to initiate the blooms. In the absence of very strong winds and water currents that can possibly disaggregate the blue biofilm, the end of blooms coincided with the warming of the upper water masses, which might be profitable for other microorganisms and ultimately lead to a shift in the biofilm community. MDPI 2023-11-08 /pmc/articles/PMC10672038/ /pubmed/37999407 http://dx.doi.org/10.3390/md21110583 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Seveno, Julie
Car, Ana
Sirjacobs, Damien
Fullgrabe, Lovina
Dupčić Radić, Iris
Lejeune, Pierre
Leignel, Vincent
Mouget, Jean-Luc
Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
title Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
title_full Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
title_fullStr Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
title_full_unstemmed Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
title_short Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
title_sort benthic diatom blooms of blue haslea spp. in the mediterranean sea
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10672038/
https://www.ncbi.nlm.nih.gov/pubmed/37999407
http://dx.doi.org/10.3390/md21110583
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