Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes

Diatoms, a major component of the large-sized phytoplankton, are able to produce and release polyunsaturated aldehydes after cell disruption (potential PUAs or pPUA). These organisms are dominant in the large phytoplankton fraction (>10 µm) in the Strait of Gibraltar, the only connection between...

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Main Authors:	Morillo-García, Soledad, Valcárcel-Pérez, Nerea, Cózar, Andrés, Ortega, María J., Macías, Diego, Ramírez-Romero, Eduardo, García, Carlos M., Echevarría, Fidel, Bartual, Ana
Format:	Online
Language:	English
Published:	MDPI 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3967220/

id	pubmed-3967220
recordtype	oai_dc
spelling	pubmed-39672202014-03-27 Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes Morillo-García, Soledad Valcárcel-Pérez, Nerea Cózar, Andrés Ortega, María J. Macías, Diego Ramírez-Romero, Eduardo García, Carlos M. Echevarría, Fidel Bartual, Ana Article Diatoms, a major component of the large-sized phytoplankton, are able to produce and release polyunsaturated aldehydes after cell disruption (potential PUAs or pPUA). These organisms are dominant in the large phytoplankton fraction (>10 µm) in the Strait of Gibraltar, the only connection between the Mediterranean Sea and the Atlantic Ocean. In this area, the hydrodynamics exerts a strong control on the composition and physiological state of the phytoplankton. This environment offers a great opportunity to analyze and compare the little known distribution of larger sized PUA producers in nature and, moreover, to study how environmental variables could affect the ranges and potential distribution of these compounds. Our results showed that, at both tidal regimes studied (Spring and Neap tides), diatoms in the Strait of Gibraltar are able to produce three aldehydes: Heptadienal, Octadienal and Decadienal, with a significant dominance of Decadienal production. The PUA released by mechanical cell disruption of large-sized collected cells (pPUA) ranged from 0.01 to 12.3 pmol from cells in 1 L, and from 0.1 to 9.8 fmol cell−1. Tidal regime affected the abundance, distribution and the level of physiological stress of diatoms in the Strait. During Spring tides, diatoms were more abundant, usually grouped nearer the coastal basin and showed less physiological stress than during Neap tides. Our results suggest a significant general increase in the pPUA productivity with increasing physiological stress for the cell also significantly associated to low nitrate availability. MDPI 2014-03-13 /pmc/articles/PMC3967220/ /pubmed/24633248 http://dx.doi.org/10.3390/md12031438 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Morillo-García, Soledad Valcárcel-Pérez, Nerea Cózar, Andrés Ortega, María J. Macías, Diego Ramírez-Romero, Eduardo García, Carlos M. Echevarría, Fidel Bartual, Ana
spellingShingle	Morillo-García, Soledad Valcárcel-Pérez, Nerea Cózar, Andrés Ortega, María J. Macías, Diego Ramírez-Romero, Eduardo García, Carlos M. Echevarría, Fidel Bartual, Ana Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes
author_facet	Morillo-García, Soledad Valcárcel-Pérez, Nerea Cózar, Andrés Ortega, María J. Macías, Diego Ramírez-Romero, Eduardo García, Carlos M. Echevarría, Fidel Bartual, Ana
author_sort	Morillo-García, Soledad
title	Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes
title_short	Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes
title_full	Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes
title_fullStr	Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes
title_full_unstemmed	Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes
title_sort	potential polyunsaturated aldehydes in the strait of gibraltar under two tidal regimes
description	Diatoms, a major component of the large-sized phytoplankton, are able to produce and release polyunsaturated aldehydes after cell disruption (potential PUAs or pPUA). These organisms are dominant in the large phytoplankton fraction (>10 µm) in the Strait of Gibraltar, the only connection between the Mediterranean Sea and the Atlantic Ocean. In this area, the hydrodynamics exerts a strong control on the composition and physiological state of the phytoplankton. This environment offers a great opportunity to analyze and compare the little known distribution of larger sized PUA producers in nature and, moreover, to study how environmental variables could affect the ranges and potential distribution of these compounds. Our results showed that, at both tidal regimes studied (Spring and Neap tides), diatoms in the Strait of Gibraltar are able to produce three aldehydes: Heptadienal, Octadienal and Decadienal, with a significant dominance of Decadienal production. The PUA released by mechanical cell disruption of large-sized collected cells (pPUA) ranged from 0.01 to 12.3 pmol from cells in 1 L, and from 0.1 to 9.8 fmol cell−1. Tidal regime affected the abundance, distribution and the level of physiological stress of diatoms in the Strait. During Spring tides, diatoms were more abundant, usually grouped nearer the coastal basin and showed less physiological stress than during Neap tides. Our results suggest a significant general increase in the pPUA productivity with increasing physiological stress for the cell also significantly associated to low nitrate availability.
publisher	MDPI
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3967220/
_version_	1612071678212308992

Potential Polyunsaturated Aldehydes in the Strait of Gibraltar under Two Tidal Regimes

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