Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons
This study investigates the effects of polycyclic aromatic hydrocarbons (PAHs) on two potentially toxic Pseudo-nitzschia hasleana and P. mannii, isolated from a PAH contaminated marine environment. Both species, maintained in non-axenic cultures, have been exposed during 144 h to increasing concentr...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-05-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651321001937 |
| _version_ | 1818931521177780224 |
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| author | Sondes Melliti Ben Garali Inès Sahraoui Hiba Ben Othman Abdessalem Kouki Pablo de la Iglesia Jorge Diogène Céline Lafabrie Karl B. Andree Margarita Fernández-Tejedor Kaouther Mejri Marouan Meddeb Olivier Pringault Asma Sakka Hlaili |
| author_facet | Sondes Melliti Ben Garali Inès Sahraoui Hiba Ben Othman Abdessalem Kouki Pablo de la Iglesia Jorge Diogène Céline Lafabrie Karl B. Andree Margarita Fernández-Tejedor Kaouther Mejri Marouan Meddeb Olivier Pringault Asma Sakka Hlaili |
| author_sort | Sondes Melliti Ben Garali |
| collection | DOAJ |
| description | This study investigates the effects of polycyclic aromatic hydrocarbons (PAHs) on two potentially toxic Pseudo-nitzschia hasleana and P. mannii, isolated from a PAH contaminated marine environment. Both species, maintained in non-axenic cultures, have been exposed during 144 h to increasing concentrations of a 15 PAHs mixture. Analysis of the domoic acid, showed very low concentrations. Dose–response curves for growth and photosynthesis inhibition were determined. Both species have maintained their growth until the end of incubation even at the highest concentration tested (120 µg l-1), Nevertheless, P mannii showed faster growth and seemed to be more tolerant than P. hasleana. To reduce PAH toxicity, both species have enhanced their biovolume, with a higher increase for P. mannii relative to P hasleana. Both species were also capable of bio-concentrating PAHs and were able to degrade them probably in synergy with their associated bacteria. The highest biodegradation was observed for P. mannii, which could harbored more efficient hydrocarbon-degrading bacteria. This study provides the first evidence that PAHs can control the growth and physiology of potentially toxic diatoms. Future studies should investigate the bacterial community associated with Pseudo-nitzschia species, as responses to pollutants or to other environmental stressors could be strongly influence by associated bacteria. |
| first_indexed | 2024-12-20T04:17:55Z |
| format | Article |
| id | doaj.art-9a0af1bd4a51459aa266438d3f8cfb74 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-20T04:17:55Z |
| publishDate | 2021-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-9a0af1bd4a51459aa266438d3f8cfb742022-12-21T19:53:43ZengElsevierEcotoxicology and Environmental Safety0147-65132021-05-01214112082Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbonsSondes Melliti Ben Garali0Inès Sahraoui1Hiba Ben Othman2Abdessalem Kouki3Pablo de la Iglesia4Jorge Diogène5Céline Lafabrie6Karl B. Andree7Margarita Fernández-Tejedor8Kaouther Mejri9Marouan Meddeb10Olivier Pringault11Asma Sakka Hlaili12Laboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia; Université de Tunis El Manar, Faculté des Sciences de Tunis, LR18ES41 Sciences de l’Environnement, Biologie et Physiologie des Organismes Aquatiques, Tunis, Tunisia; Corresponding author at: Laboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia.Laboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia; Université de Tunis El Manar, Faculté des Sciences de Tunis, LR18ES41 Sciences de l’Environnement, Biologie et Physiologie des Organismes Aquatiques, Tunis, TunisiaLaboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, TunisiaLaboratoire de Microscopie électronique et de Microanalyse, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, TunisiaInstitut de Recherche et Technologie Agroalimentaire (IRTA), Ctra. Poble Nou, Km 5.5, Sant Carles de la Rapita, 43540 Tarragona, SpainInstitut de Recherche et Technologie Agroalimentaire (IRTA), Ctra. Poble Nou, Km 5.5, Sant Carles de la Rapita, 43540 Tarragona, SpainUMR 9190 MARBEC IRD-Ifremer-CNRS-Université de Montpellier, Place Eugéne Bataillon, Case 093, 34095 Montpellier Cedex 5, FranceInstitut de Recherche et Technologie Agroalimentaire (IRTA), Ctra. Poble Nou, Km 5.5, Sant Carles de la Rapita, 43540 Tarragona, SpainInstitut de Recherche et Technologie Agroalimentaire (IRTA), Ctra. Poble Nou, Km 5.5, Sant Carles de la Rapita, 43540 Tarragona, SpainLaboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia; Université de Tunis El Manar, Faculté des Sciences de Tunis, LR18ES41 Sciences de l’Environnement, Biologie et Physiologie des Organismes Aquatiques, Tunis, TunisiaLaboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia; Université de Tunis El Manar, Faculté des Sciences de Tunis, LR18ES41 Sciences de l’Environnement, Biologie et Physiologie des Organismes Aquatiques, Tunis, TunisiaUMR 9190 MARBEC IRD-Ifremer-CNRS-Université de Montpellier, Place Eugéne Bataillon, Case 093, 34095 Montpellier Cedex 5, France; UMR 110 MOI Institut Méditerranéen d'Océanologie, UniversitéAix Marseille, Université de Toulon, CNRS, IRD, Marseille, FranceLaboratoire de Biologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Université de Carthage, Bizerte, Tunisia; Université de Tunis El Manar, Faculté des Sciences de Tunis, LR18ES41 Sciences de l’Environnement, Biologie et Physiologie des Organismes Aquatiques, Tunis, TunisiaThis study investigates the effects of polycyclic aromatic hydrocarbons (PAHs) on two potentially toxic Pseudo-nitzschia hasleana and P. mannii, isolated from a PAH contaminated marine environment. Both species, maintained in non-axenic cultures, have been exposed during 144 h to increasing concentrations of a 15 PAHs mixture. Analysis of the domoic acid, showed very low concentrations. Dose–response curves for growth and photosynthesis inhibition were determined. Both species have maintained their growth until the end of incubation even at the highest concentration tested (120 µg l-1), Nevertheless, P mannii showed faster growth and seemed to be more tolerant than P. hasleana. To reduce PAH toxicity, both species have enhanced their biovolume, with a higher increase for P. mannii relative to P hasleana. Both species were also capable of bio-concentrating PAHs and were able to degrade them probably in synergy with their associated bacteria. The highest biodegradation was observed for P. mannii, which could harbored more efficient hydrocarbon-degrading bacteria. This study provides the first evidence that PAHs can control the growth and physiology of potentially toxic diatoms. Future studies should investigate the bacterial community associated with Pseudo-nitzschia species, as responses to pollutants or to other environmental stressors could be strongly influence by associated bacteria.http://www.sciencedirect.com/science/article/pii/S0147651321001937Diatoms, Pseudo-nitzschiaPAHs mixturesBiodegradationEco-toxicology |
| spellingShingle | Sondes Melliti Ben Garali Inès Sahraoui Hiba Ben Othman Abdessalem Kouki Pablo de la Iglesia Jorge Diogène Céline Lafabrie Karl B. Andree Margarita Fernández-Tejedor Kaouther Mejri Marouan Meddeb Olivier Pringault Asma Sakka Hlaili Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons Ecotoxicology and Environmental Safety Diatoms, Pseudo-nitzschia PAHs mixtures Biodegradation Eco-toxicology |
| title | Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons |
| title_full | Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons |
| title_fullStr | Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons |
| title_full_unstemmed | Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons |
| title_short | Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons |
| title_sort | capacity of the potentially toxic diatoms pseudo nitzschia mannii and pseudo nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons |
| topic | Diatoms, Pseudo-nitzschia PAHs mixtures Biodegradation Eco-toxicology |
| url | http://www.sciencedirect.com/science/article/pii/S0147651321001937 |
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