AustralieFrV1, PascalFrancis, Corpus, bibRecord, 006145

Biodegradation of free phytol by bacterial communities isolated from marine sediments under aerobic and denitrifying conditions

Identifieur interne : 006145 ( PascalFrancis/Corpus ); précédent : 006144; suivant : 006146

Biodegradation of free phytol by bacterial communities isolated from marine sediments under aerobic and denitrifying conditions

Auteurs : J.-F. Rontani ; P. C. Bonin ; J. K. Volkman

Source :

Applied and environmental microbiology : (Print) [ 0099-2240 ] ; 1999.

RBID : Pascal:00-0045924

Descripteurs français

Pascal (Inist)
- Isoprénoïde, Dégradation biologique, Sédiment, Aérobiose, Dénitrification, Communauté microbienne, Métabolite, Voie métabolique, Milieu marin, Phytol.

English descriptors

KwdEn :
- Aerobiosis, Biodegradation, Denitrification, Isoprenoid, Marine environment, Metabolic pathway, Metabolite, Microbial community, Sediments.

Abstract

Biodegradation of (E)-phytol [3,7,11,15-tetramethylhexadec-2(E)-en-1-ol] by two bacterial communities isolated from recent marine sediments under aerobic and denitrifying conditions was studied at 20°C. This isoprenoid alcohol is metabolized efficiently by these two bacterial communities via 6,10,14-trimethylpentadecan-2-one and (E)-phytenic acid. The first step in both aerobic and anaerobic bacterial degradation of (E)-phytol involves the transient production of (E)-phytenal, which in turn can be abiotically converted to 6,10,14-trimethylpentadecan-2-one. Most of the isoprenoid metabolites identified in vitro could be detected in a fresh sediment core collected at the same site as the sediments used for the incubations. Since (E)-phytenal is less sensitive to abiotic degradation at the temperature of the sediments (15°C), the major part of (E)-phytol appeared to be biodegraded in situ via (E)-phytenic acid. (Z)- and (E)-phytenic acids are present in particularly large quantities in the upper section of the core, and their concentrations quickly decrease with depth in the core. This degradation (which takes place without significant production of phytanic acid) is attributed to the involvement of alternating β-decarboxymethylation and β-oxidation reaction sequences induced by denitrifiers. Despite the low nitrate concentration of marine sediments, denitrifying bacteria seem to play a significant role in the mineralization of (E)-phytol.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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C01	`01`		`ENG`	@0 Biodegradation of (E)-phytol [3,7,11,15-tetramethylhexadec-2(E)-en-1-ol] by two bacterial communities isolated from recent marine sediments under aerobic and denitrifying conditions was studied at 20°C. This isoprenoid alcohol is metabolized efficiently by these two bacterial communities via 6,10,14-trimethylpentadecan-2-one and (E)-phytenic acid. The first step in both aerobic and anaerobic bacterial degradation of (E)-phytol involves the transient production of (E)-phytenal, which in turn can be abiotically converted to 6,10,14-trimethylpentadecan-2-one. Most of the isoprenoid metabolites identified in vitro could be detected in a fresh sediment core collected at the same site as the sediments used for the incubations. Since (E)-phytenal is less sensitive to abiotic degradation at the temperature of the sediments (15°C), the major part of (E)-phytol appeared to be biodegraded in situ via (E)-phytenic acid. (Z)- and (E)-phytenic acids are present in particularly large quantities in the upper section of the core, and their concentrations quickly decrease with depth in the core. This degradation (which takes place without significant production of phytanic acid) is attributed to the involvement of alternating β-decarboxymethylation and β-oxidation reaction sequences induced by denitrifiers. Despite the low nitrate concentration of marine sediments, denitrifying bacteria seem to play a significant role in the mineralization of (E)-phytol.
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C03	`04`	`X`	`ENG`	`@0 Aerobiosis @5 11`
C03	`04`	`X`	`SPA`	`@0 Aerobiosis @5 11`
C03	`05`	`X`	`FRE`	`@0 Dénitrification @5 12`
C03	`05`	`X`	`ENG`	`@0 Denitrification @5 12`
C03	`05`	`X`	`SPA`	`@0 Desnitrificación @5 12`
C03	`06`	`X`	`FRE`	`@0 Communauté microbienne @5 19`
C03	`06`	`X`	`ENG`	`@0 Microbial community @5 19`
C03	`06`	`X`	`SPA`	`@0 Comunidad microbiana @5 19`
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C03	`07`	`X`	`ENG`	`@0 Metabolite @5 21`
C03	`07`	`X`	`SPA`	`@0 Metabolito @5 21`
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C03	`08`	`X`	`ENG`	`@0 Metabolic pathway @5 35`
C03	`08`	`X`	`SPA`	`@0 Vía métabolica @5 35`
C03	`09`	`X`	`FRE`	`@0 Milieu marin @5 53`
C03	`09`	`X`	`ENG`	`@0 Marine environment @5 53`
C03	`09`	`X`	`SPA`	`@0 Medio marino @5 53`
C03	`10`	`X`	`FRE`	`@0 Phytol @4 INC @5 91`
N21				`@1 031`

Format Inist (serveur)

NO :	PASCAL 00-0045924 INIST
ET :	Biodegradation of free phytol by bacterial communities isolated from marine sediments under aerobic and denitrifying conditions
AU :	RONTANI (J.-F.); BONIN (P. C.); VOLKMAN (J. K.)
AF :	Laboratoire d'Océanographie et de Biogéochimie (UMR 6535), Centre d'Océanologie de Marseille (OSU), Campus de Luminy/13288 Marseille/France (1 aut., 2 aut.); CSIRO Marine Research/Hobart, Tasmania 7001/Australie (3 aut.)
DT :	Publication en série; Niveau analytique
SO :	Applied and environmental microbiology : (Print); ISSN 0099-2240; Coden AEMIDF; Etats-Unis; Da. 1999; Vol. 65; No. 12; Pp. 5484-5492; Bibl. 51 ref.
LA :	Anglais
EA :	Biodegradation of (E)-phytol [3,7,11,15-tetramethylhexadec-2(E)-en -1-ol] by two bacterial communities isolated from recent marine sediments under aerobic and denitrifying conditions was studied at 20°C. This isoprenoid alcohol is metabolized efficiently by these two bacterial communities via 6,10,14-trimethylpentadecan-2-one and (E)-phytenic acid. The first step in both aerobic and anaerobic bacterial degradation of (E)-phytol involves the transient production of (E)-phytenal, which in turn can be abiotically converted to 6,10,14-trimethylpentadecan-2-one. Most of the isoprenoid metabolites identified in vitro could be detected in a fresh sediment core collected at the same site as the sediments used for the incubations. Since (E)-phytenal is less sensitive to abiotic degradation at the temperature of the sediments (15°C), the major part of (E)-phytol appeared to be biodegraded in situ via (E)-phytenic acid. (Z)- and (E)-phytenic acids are present in particularly large quantities in the upper section of the core, and their concentrations quickly decrease with depth in the core. This degradation (which takes place without significant production of phytanic acid) is attributed to the involvement of alternating β-decarboxymethylation and β-oxidation reaction sequences induced by denitrifiers. Despite the low nitrate concentration of marine sediments, denitrifying bacteria seem to play a significant role in the mineralization of (E)-phytol.
CC :	002A14C02
FD :	Isoprénoïde; Dégradation biologique; Sédiment; Aérobiose; Dénitrification; Communauté microbienne; Métabolite; Voie métabolique; Milieu marin; Phytol
ED :	Isoprenoid; Biodegradation; Sediments; Aerobiosis; Denitrification; Microbial community; Metabolite; Metabolic pathway; Marine environment
SD :	Isoprenoide; Degradación biológica; Sedimento; Aerobiosis; Desnitrificación; Comunidad microbiana; Metabolito; Vía métabolica; Medio marino
LO :	INIST-7195.354000080849240440
ID :	00-0045924

Links to Exploration step

Pascal:00-0045924

Le document en format XML

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<front><div type="abstract" xml:lang="en">Biodegradation of (E)-phytol [3,7,11,15-tetramethylhexadec-2(E)-en-1-ol] by two bacterial communities isolated from recent marine sediments under aerobic and denitrifying conditions was studied at 20°C. This isoprenoid alcohol is metabolized efficiently by these two bacterial communities via 6,10,14-trimethylpentadecan-2-one and (E)-phytenic acid. The first step in both aerobic and anaerobic bacterial degradation of (E)-phytol involves the transient production of (E)-phytenal, which in turn can be abiotically converted to 6,10,14-trimethylpentadecan-2-one. Most of the isoprenoid metabolites identified in vitro could be detected in a fresh sediment core collected at the same site as the sediments used for the incubations. Since (E)-phytenal is less sensitive to abiotic degradation at the temperature of the sediments (15°C), the major part of (E)-phytol appeared to be biodegraded in situ via (E)-phytenic acid. (Z)- and (E)-phytenic acids are present in particularly large quantities in the upper section of the core, and their concentrations quickly decrease with depth in the core. This degradation (which takes place without significant production of phytanic acid) is attributed to the involvement of alternating β-decarboxymethylation and β-oxidation reaction sequences induced by denitrifiers. Despite the low nitrate concentration of marine sediments, denitrifying bacteria seem to play a significant role in the mineralization of (E)-phytol.</div>
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<ET>Biodegradation of free phytol by bacterial communities isolated from marine sediments under aerobic and denitrifying conditions</ET>
<AU>RONTANI (J.-F.); BONIN (P. C.); VOLKMAN (J. K.)</AU>
<AF>Laboratoire d'Océanographie et de Biogéochimie (UMR 6535), Centre d'Océanologie de Marseille (OSU), Campus de Luminy/13288 Marseille/France (1 aut., 2 aut.); CSIRO Marine Research/Hobart, Tasmania 7001/Australie (3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Applied and environmental microbiology : (Print); ISSN 0099-2240; Coden AEMIDF; Etats-Unis; Da. 1999; Vol. 65; No. 12; Pp. 5484-5492; Bibl. 51 ref.</SO>
<LA>Anglais</LA>
<EA>Biodegradation of (E)-phytol [3,7,11,15-tetramethylhexadec-2(E)-en -1-ol] by two bacterial communities isolated from recent marine sediments under aerobic and denitrifying conditions was studied at 20°C. This isoprenoid alcohol is metabolized efficiently by these two bacterial communities via 6,10,14-trimethylpentadecan-2-one and (E)-phytenic acid. The first step in both aerobic and anaerobic bacterial degradation of (E)-phytol involves the transient production of (E)-phytenal, which in turn can be abiotically converted to 6,10,14-trimethylpentadecan-2-one. Most of the isoprenoid metabolites identified in vitro could be detected in a fresh sediment core collected at the same site as the sediments used for the incubations. Since (E)-phytenal is less sensitive to abiotic degradation at the temperature of the sediments (15°C), the major part of (E)-phytol appeared to be biodegraded in situ via (E)-phytenic acid. (Z)- and (E)-phytenic acids are present in particularly large quantities in the upper section of the core, and their concentrations quickly decrease with depth in the core. This degradation (which takes place without significant production of phytanic acid) is attributed to the involvement of alternating β-decarboxymethylation and β-oxidation reaction sequences induced by denitrifiers. Despite the low nitrate concentration of marine sediments, denitrifying bacteria seem to play a significant role in the mineralization of (E)-phytol.</EA>
<CC>002A14C02</CC>
<FD>Isoprénoïde; Dégradation biologique; Sédiment; Aérobiose; Dénitrification; Communauté microbienne; Métabolite; Voie métabolique; Milieu marin; Phytol</FD>
<ED>Isoprenoid; Biodegradation; Sediments; Aerobiosis; Denitrification; Microbial community; Metabolite; Metabolic pathway; Marine environment</ED>
<SD>Isoprenoide; Degradación biológica; Sedimento; Aerobiosis; Desnitrificación; Comunidad microbiana; Metabolito; Vía métabolica; Medio marino</SD>
<LO>INIST-7195.354000080849240440</LO>
<ID>00-0045924</ID>
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Biodegradation of free phytol by bacterial communities isolated from marine sediments under aerobic and denitrifying conditions

Biodegradation of free phytol by bacterial communities isolated from marine sediments under aerobic and denitrifying conditions

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