Differential effect of three polyunsaturated aldehydes on marine bacterial isolates
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| Title: | Differential effect of three polyunsaturated aldehydes on marine bacterial isolates |
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| Authors: | Ribalet, Francois1 ribalet@szn.it, Intertaglia, Laurent2,3, Lebaron, Philippe2,3, Casotti, Raffaella1 raffa@szn.it |
| Source: | Aquatic Toxicology. Jan2008, Vol. 86 Issue 2, p249-255. 7p. |
| Subjects: | Marine bacteria, Marine organisms, Organic compounds, Marine microbiology |
| Abstract: | Abstract: Bioactive polyunsaturated aldehydes (PUAs) are produced by several marine phytoplankton (mainly diatoms) and have been shown to have a detrimental effect on a wide variety of organisms, including phytoplankton and invertebrates. However, their potential impact on marine bacteria has been largely neglected. We assess here the effect of three PUAs produced by marine diatoms: 2E,4E-decadienal, 2E,4E-octadienal and 2E,4E-heptadienal, on the growth of 33 marine bacterial strains, including 16 strains isolated during a bloom of the PUA-producing diatom Skeletonema marinoi in the Northern Adriatic Sea. A concentration-dependent growth reduction was observed for 19 bacterial strains at concentrations ranging from 3 to 145μmolL−1. Surprisingly, Eudora adriatica strain MOLA358 (Flavobacteriaceae) and Alteromonas hispanica strain MOLA151 (Alteromonadaceae) showed growth stimulation upon exposure to PUAs at concentrations between 13 and 18μmolL−1. The remaining 12 strains were unaffected by even very high PUA concentrations. Strains isolated during the diatom bloom showed remarkable resistance to PUA exposures, with only two out of 16 strains showing growth inhibition at PUA concentrations below 106, 130, and 145μmolL−1 for 2E,4E-decadienal, 2E,4E-octadienal and 2E,4E-heptadienal, respectively. No correlation between taxonomical position and sensitivity to PUA was observed. Considering that many bacteria thrive in close vicinity of diatom cells, it is likely that these compounds may shape the structure of associated bacterial communities by representing a selection force. This is even more relevant during the final stages of blooms, when senescence and nutrient limitation increase the potential production and release of aldehydes. [Copyright &y& Elsevier] |
| Copyright of Aquatic Toxicology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 28752750 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Differential effect of three polyunsaturated aldehydes on marine bacterial isolates – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ribalet%2C+Francois%22">Ribalet, Francois</searchLink><relatesTo>1</relatesTo><i> ribalet@szn.it</i><br /><searchLink fieldCode="AR" term="%22Intertaglia%2C+Laurent%22">Intertaglia, Laurent</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Lebaron%2C+Philippe%22">Lebaron, Philippe</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Casotti%2C+Raffaella%22">Casotti, Raffaella</searchLink><relatesTo>1</relatesTo><i> raffa@szn.it</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Aquatic+Toxicology%22">Aquatic Toxicology</searchLink>. Jan2008, Vol. 86 Issue 2, p249-255. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Marine+bacteria%22">Marine bacteria</searchLink><br /><searchLink fieldCode="DE" term="%22Marine+organisms%22">Marine organisms</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Marine+microbiology%22">Marine microbiology</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Bioactive polyunsaturated aldehydes (PUAs) are produced by several marine phytoplankton (mainly diatoms) and have been shown to have a detrimental effect on a wide variety of organisms, including phytoplankton and invertebrates. However, their potential impact on marine bacteria has been largely neglected. We assess here the effect of three PUAs produced by marine diatoms: 2E,4E-decadienal, 2E,4E-octadienal and 2E,4E-heptadienal, on the growth of 33 marine bacterial strains, including 16 strains isolated during a bloom of the PUA-producing diatom Skeletonema marinoi in the Northern Adriatic Sea. A concentration-dependent growth reduction was observed for 19 bacterial strains at concentrations ranging from 3 to 145μmolL−1. Surprisingly, Eudora adriatica strain MOLA358 (Flavobacteriaceae) and Alteromonas hispanica strain MOLA151 (Alteromonadaceae) showed growth stimulation upon exposure to PUAs at concentrations between 13 and 18μmolL−1. The remaining 12 strains were unaffected by even very high PUA concentrations. Strains isolated during the diatom bloom showed remarkable resistance to PUA exposures, with only two out of 16 strains showing growth inhibition at PUA concentrations below 106, 130, and 145μmolL−1 for 2E,4E-decadienal, 2E,4E-octadienal and 2E,4E-heptadienal, respectively. No correlation between taxonomical position and sensitivity to PUA was observed. Considering that many bacteria thrive in close vicinity of diatom cells, it is likely that these compounds may shape the structure of associated bacterial communities by representing a selection force. This is even more relevant during the final stages of blooms, when senescence and nutrient limitation increase the potential production and release of aldehydes. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Aquatic Toxicology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.aquatox.2007.11.005 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 249 Subjects: – SubjectFull: Marine bacteria Type: general – SubjectFull: Marine organisms Type: general – SubjectFull: Organic compounds Type: general – SubjectFull: Marine microbiology Type: general Titles: – TitleFull: Differential effect of three polyunsaturated aldehydes on marine bacterial isolates Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ribalet, Francois – PersonEntity: Name: NameFull: Intertaglia, Laurent – PersonEntity: Name: NameFull: Lebaron, Philippe – PersonEntity: Name: NameFull: Casotti, Raffaella IsPartOfRelationships: – BibEntity: Dates: – D: 31 M: 01 Text: Jan2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 0166445X Numbering: – Type: volume Value: 86 – Type: issue Value: 2 Titles: – TitleFull: Aquatic Toxicology Type: main |
| ResultId | 1 |
