Polyunsaturated Aldehydes from Large Phytoplankton of the Atlantic Ocean Surface (42°N to 33°S)

Marine Drugs

Ana Bartual¹  Néstor Arandia-Gorostidi⁵  Andrés Cózar¹  Soledad Morillo-Garc໚¹  Mar໚ Jesús Ortega²  Montserrat Vidal³  Ana Mar໚ Cabello⁴  Juan Ignacio González-Gordillo¹ 

[1] Department of Biology, University of Cádiz, Avda. República Saharaui s/n, Puerto Real 11510, Cádiz, Spain; E-Mails:;Department of Organic Chemistry, University of Cádiz, Avda. República Saharaui s/n, Puerto Real 11510, Cádiz, Spain; E-Mail:;Department of Ecology.University of Barcelona, Av. Diagonal 643, Barcelona 08028, Spain; E-mail:;Department of Marine Biology and Oceanography, Institut de Ciències del Mar (CSIC), Passeig Marítim de la Barceloneta, 37-49, Barcelona E-08003, Spain; E-Mail:;Instituto Español de Oceanografía, Centro Oceanográfico de Gijón, Avda. Príncipe de Asturias, 70 bis, Gijón 33212, Spain; E-Mail:

关键词: oxylipins;    diatoms;    biogeographical provinces;    Atlantic Ocean;    polyunsaturated aldehydes;    heptadienal;    decadienal;    octadienal;   

DOI  :  10.3390/md12020682

来源: mdpi

【 摘 要 】

Polyunsaturated aldehydes (PUAs) are organic compounds mainly produced by diatoms, after cell wounding. These compounds are increasingly reported as teratogenic for species of grazers and deleterious for phytoplanktonic species, but there is still scarce information regarding concentration ranges and the composition of PUAs in the open ocean. In this study, we analyzed the spatial distribution and the type of aldehydes produced by the large-sized (>10 μm) phytoplankton in the Atlantic Ocean surface. Analyses were conducted on PUAs released after mechanical disruption of the phytoplankton cells, referred to here as potential PUAs (pPUAs). Results show the ubiquitous presence of pPUA in the open ocean, including upwelling areas, as well as oligotrophic gyres. Total pPUA concentrations ranged from zero to 4.18 pmol from cells in 1 L. Identified PUAs were heptadienal, octadienal and decadienal, with heptadienal being the most common (79% of total stations). PUA amount and composition across the Atlantic Ocean was mainly related to the nitrogen:phosphorus ratio, suggesting nutrient-driven mechanisms of PUA production. Extending the range of trophic conditions considered by adding data reported for productive coastal waters, we found a pattern of PUA variation in relation to trophic status.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.