Long-chain alkenones and related compounds in the benthic haptophyte Chrysotila lamellosa anand HAP 17
Identifieur interne : 00AC14 ( Main/Exploration ); précédent : 00AC13; suivant : 00AC15Long-chain alkenones and related compounds in the benthic haptophyte Chrysotila lamellosa anand HAP 17
Auteurs : Jean-Francois Rontania [France] ; Béatriz Beker [France] ; John K. Volkman [Australie]Source :
- Phytochemistry [ 0031-9422 ] ; 2004.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The neutral lipid compositions of the coastal haptophyte Chrysotila lamellosa HAP 17 grown in batch culture at 10 and 20 C have been determined. A comparison was also made between the lipid compositions of cells harvested in early and late stationary phase. This species contains a suite of very long-chain C37-C40 alkenones and alkenoates as found in a few microalgae from the Haptophyta. The distributions of these compounds show some differences to earlier reports of different strains of this alga, which are only in part attributable to culture conditions. A suite of long-chain alkenols, the reduced form of the alkenones, was characterized for the first time. The abundance of these compounds was only 1.5% of that of the corresponding alkenones, and the relative proportion of C37-C38 constituents depended on growth temperature. These data show that haptophyte algae are a possible source of the alkenols found in some marine sediments, but the small amounts found suggest that other sources such as bacterial reduction of alkenones are more likely in highly reducing sediments. A mixture of C29-C33 n-alkenes, dominated by the C31.1 monoene, was found in marked contrast to previous analyses of other strains which reported only the presence of a C31:2 diene. The sterol distribution included the common haptophyte sterol 24α-methylcholesta-5,22E-dien-3β-ol (epi-brassicasterol) as well as significant amounts of Δ5- and Δ5,22-C29 sterols.
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Volkman</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>CSIRO Marine Research, GPO Box 1538</s1><s2>Hobart, Tasmania 7001</s2><s3>AUS</s3><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Hobart, Tasmania 7001</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">04-0089915</idno><date when="2004">2004</date><idno type="stanalyst">PASCAL 04-0089915 INIST</idno><idno type="RBID">Pascal:04-0089915</idno><idno type="wicri:Area/PascalFrancis/Corpus">005066</idno><idno type="wicri:Area/PascalFrancis/Curation">001048</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">004A82</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">004A82</idno><idno type="wicri:doubleKey">0031-9422:2004:Rontania J:long:chain:alkenones</idno><idno type="wicri:Area/Main/Merge">00B909</idno><idno type="wicri:Area/Main/Curation">00AC14</idno><idno type="wicri:Area/Main/Exploration">00AC14</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Long-chain alkenones and related compounds in the benthic haptophyte Chrysotila lamellosa anand HAP 17</title><author><name sortKey="Rontania, Jean Francois" sort="Rontania, Jean Francois" uniqKey="Rontania J" first="Jean-Francois" last="Rontania">Jean-Francois Rontania</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire d'Océanographie et de Biogéochimie (UMR CNRS 6535), Centre d'Océanologie de Marseille (OSU) Campus de Luminy, case 901</s1><s2>13288 Marseille</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Beker, Beatriz" sort="Beker, Beatriz" uniqKey="Beker B" first="Béatriz" last="Beker">Béatriz Beker</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Centre d'Océanologie de Marseille (OSU), Station marine d'Endoume</s1><s2>13007 Marseille</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Volkman, John K" sort="Volkman, John K" uniqKey="Volkman J" first="John K." last="Volkman">John K. Volkman</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>CSIRO Marine Research, GPO Box 1538</s1><s2>Hobart, Tasmania 7001</s2><s3>AUS</s3><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Hobart, Tasmania 7001</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Phytochemistry</title><title level="j" type="abbreviated">Phytochemistry</title><idno type="ISSN">0031-9422</idno><imprint><date when="2004">2004</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Phytochemistry</title><title level="j" type="abbreviated">Phytochemistry</title><idno type="ISSN">0031-9422</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alkene</term><term>Alkenol</term><term>Alkenone</term><term>Chemical composition</term><term>Growth</term><term>Lipids</term><term>Marine sediments</term><term>Sterol</term><term>Temperature</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Composition chimique</term><term>Lipide</term><term>Alcénone</term><term>Croissance</term><term>Température</term><term>Alcénol</term><term>Stérol</term><term>Sédiment marin</term><term>Alcène</term><term>Chrysotila lamellosa</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The neutral lipid compositions of the coastal haptophyte Chrysotila lamellosa HAP 17 grown in batch culture at 10 and 20 C have been determined. A comparison was also made between the lipid compositions of cells harvested in early and late stationary phase. This species contains a suite of very long-chain C<sub>37</sub>-C<sub>40</sub> alkenones and alkenoates as found in a few microalgae from the Haptophyta. The distributions of these compounds show some differences to earlier reports of different strains of this alga, which are only in part attributable to culture conditions. A suite of long-chain alkenols, the reduced form of the alkenones, was characterized for the first time. The abundance of these compounds was only 1.5% of that of the corresponding alkenones, and the relative proportion of C<sub>37</sub>-C<sub>38</sub> constituents depended on growth temperature. These data show that haptophyte algae are a possible source of the alkenols found in some marine sediments, but the small amounts found suggest that other sources such as bacterial reduction of alkenones are more likely in highly reducing sediments. A mixture of C<sub>29</sub>-C<sub>33</sub> n-alkenes, dominated by the C<sub>31.1</sub> monoene, was found in marked contrast to previous analyses of other strains which reported only the presence of a C<sub>31:2</sub> diene. The sterol distribution included the common haptophyte sterol 24α-methylcholesta-5,22E-dien-3β-ol (epi-brassicasterol) as well as significant amounts of Δ<sup>5</sup>- and Δ<sup>5,22</sup>-C<sub>29</sub> sterols.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Marseille</li></settlement></list><tree><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Rontania, Jean Francois" sort="Rontania, Jean Francois" uniqKey="Rontania J" first="Jean-Francois" last="Rontania">Jean-Francois Rontania</name></region><name sortKey="Beker, Beatriz" sort="Beker, Beatriz" uniqKey="Beker B" first="Béatriz" last="Beker">Béatriz Beker</name></country><country name="Australie"><noRegion><name sortKey="Volkman, John K" sort="Volkman, John K" uniqKey="Volkman J" first="John K." last="Volkman">John K. Volkman</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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