Degradation of benzene, toluene, ethylbenzene, and xylenes (BTEX) by the lignin-degrading basidiomycete Phanerochaete chrysosporium.
Identifieur interne : 000E28 ( Main/Exploration ); précédent : 000E27; suivant : 000E29Degradation of benzene, toluene, ethylbenzene, and xylenes (BTEX) by the lignin-degrading basidiomycete Phanerochaete chrysosporium.
Auteurs : J S Yadav [États-Unis] ; C A ReddySource :
- Applied and environmental microbiology [ 0099-2240 ] ; 1993.
Descripteurs français
- KwdFr :
- Animaux (MeSH), Basidiomycota (enzymologie), Basidiomycota (métabolisme), Benzène (métabolisme), Chromatographie en phase gazeuse (MeSH), Concentration en ions d'hydrogène (MeSH), Dépollution biologique de l'environnement (MeSH), Dérivés du benzène (métabolisme), Facteurs temps (MeSH), Peroxidases (métabolisme), Relation dose-effet des médicaments (MeSH), Température (MeSH), Toluène (métabolisme), Xylènes (métabolisme).
- MESH :
- enzymologie : Basidiomycota.
- métabolisme : Basidiomycota, Benzène, Dérivés du benzène, Peroxidases, Toluène, Xylènes.
- Animaux, Chromatographie en phase gazeuse, Concentration en ions d'hydrogène, Dépollution biologique de l'environnement, Facteurs temps, Relation dose-effet des médicaments, Température.
English descriptors
- KwdEn :
- Animals (MeSH), Basidiomycota (enzymology), Basidiomycota (metabolism), Benzene (metabolism), Benzene Derivatives (metabolism), Biodegradation, Environmental (MeSH), Chromatography, Gas (MeSH), Dose-Response Relationship, Drug (MeSH), Hydrogen-Ion Concentration (MeSH), Peroxidases (metabolism), Temperature (MeSH), Time Factors (MeSH), Toluene (metabolism), Xylenes (metabolism).
- MESH :
- chemical , metabolism : Benzene, Benzene Derivatives, Peroxidases, Toluene, Xylenes.
- enzymology : Basidiomycota.
- metabolism : Basidiomycota.
- Animals, Biodegradation, Environmental, Chromatography, Gas, Dose-Response Relationship, Drug, Hydrogen-Ion Concentration, Temperature, Time Factors.
Abstract
Degradation of the BTEX (benzene, toluene, ethylbenzene, and o-, m-, and p-xylenes) group of organopollutants by the white-rot fungus Phanerochaete chrysosporium was studied. Our results show that the organism efficiently degrades all the BTEX components when these compounds are added either individually or as a composite mixture. Degradation was favored under nonligninolytic culture conditions in malt extract medium, in which extracellular lignin peroxidases (LIPs) and manganese-dependent peroxidases (MNPs) are not produced. The noninvolvement of LIPs and MNPs in BTEX degradation was also evident from in vitro studies using concentrated extracellular fluid containing LIPs and MNPs and from a comparison of the extents of BTEX degradation by the wild type and the per mutant, which lacks LIPs and MNPs. A substantially greater extent of degradation of all the BTEX compounds was observed in static than in shaken liquid cultures. Furthermore, the level of degradation was relatively higher at 25 than at 37 degrees C, but pH variations between 4.5 and 7.0 had little effect on the extent of degradation. Studies with uniformly ring-labeled [14C]benzene and [14C]toluene showed substantial mineralization of these compounds to 14CO2.
DOI: 10.1128/AEM.59.3.756-762.1993
PubMed: 8481002
PubMed Central: PMC202186
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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(metabolism)</term><term>Temperature (MeSH)</term><term>Time Factors (MeSH)</term><term>Toluene (metabolism)</term><term>Xylenes (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Animaux (MeSH)</term><term>Basidiomycota (enzymologie)</term><term>Basidiomycota (métabolisme)</term><term>Benzène (métabolisme)</term><term>Chromatographie en phase gazeuse (MeSH)</term><term>Concentration en ions d'hydrogène (MeSH)</term><term>Dépollution biologique de l'environnement (MeSH)</term><term>Dérivés du benzène (métabolisme)</term><term>Facteurs temps (MeSH)</term><term>Peroxidases (métabolisme)</term><term>Relation dose-effet des médicaments (MeSH)</term><term>Température (MeSH)</term><term>Toluène (métabolisme)</term><term>Xylènes (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Benzene</term><term>Benzene Derivatives</term><term>Peroxidases</term><term>Toluene</term><term>Xylenes</term></keywords><keywords scheme="MESH" qualifier="enzymologie" xml:lang="fr"><term>Basidiomycota</term></keywords><keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Basidiomycota</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Basidiomycota</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Basidiomycota</term><term>Benzène</term><term>Dérivés du benzène</term><term>Peroxidases</term><term>Toluène</term><term>Xylènes</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Biodegradation, Environmental</term><term>Chromatography, Gas</term><term>Dose-Response Relationship, Drug</term><term>Hydrogen-Ion Concentration</term><term>Temperature</term><term>Time Factors</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Chromatographie en phase gazeuse</term><term>Concentration en ions d'hydrogène</term><term>Dépollution biologique de l'environnement</term><term>Facteurs temps</term><term>Relation dose-effet des médicaments</term><term>Température</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Degradation of the BTEX (benzene, toluene, ethylbenzene, and o-, m-, and p-xylenes) group of organopollutants by the white-rot fungus Phanerochaete chrysosporium was studied. Our results show that the organism efficiently degrades all the BTEX components when these compounds are added either individually or as a composite mixture. Degradation was favored under nonligninolytic culture conditions in malt extract medium, in which extracellular lignin peroxidases (LIPs) and manganese-dependent peroxidases (MNPs) are not produced. The noninvolvement of LIPs and MNPs in BTEX degradation was also evident from in vitro studies using concentrated extracellular fluid containing LIPs and MNPs and from a comparison of the extents of BTEX degradation by the wild type and the per mutant, which lacks LIPs and MNPs. A substantially greater extent of degradation of all the BTEX compounds was observed in static than in shaken liquid cultures. Furthermore, the level of degradation was relatively higher at 25 than at 37 degrees C, but pH variations between 4.5 and 7.0 had little effect on the extent of degradation. Studies with uniformly ring-labeled [14C]benzene and [14C]toluene showed substantial mineralization of these compounds to 14CO2.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">8481002</PMID><DateCompleted><Year>1993</Year><Month>05</Month><Day>27</Day></DateCompleted><DateRevised><Year>2020</Year><Month>07</Month><Day>24</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0099-2240</ISSN><JournalIssue CitedMedium="Print"><Volume>59</Volume><Issue>3</Issue><PubDate><Year>1993</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Applied and environmental microbiology</Title><ISOAbbreviation>Appl Environ Microbiol</ISOAbbreviation></Journal><ArticleTitle>Degradation of benzene, toluene, ethylbenzene, and xylenes (BTEX) by the lignin-degrading basidiomycete Phanerochaete chrysosporium.</ArticleTitle><Pagination><MedlinePgn>756-62</MedlinePgn></Pagination><Abstract><AbstractText>Degradation of the BTEX (benzene, toluene, ethylbenzene, and o-, m-, and p-xylenes) group of organopollutants by the white-rot fungus Phanerochaete chrysosporium was studied. Our results show that the organism efficiently degrades all the BTEX components when these compounds are added either individually or as a composite mixture. Degradation was favored under nonligninolytic culture conditions in malt extract medium, in which extracellular lignin peroxidases (LIPs) and manganese-dependent peroxidases (MNPs) are not produced. The noninvolvement of LIPs and MNPs in BTEX degradation was also evident from in vitro studies using concentrated extracellular fluid containing LIPs and MNPs and from a comparison of the extents of BTEX degradation by the wild type and the per mutant, which lacks LIPs and MNPs. A substantially greater extent of degradation of all the BTEX compounds was observed in static than in shaken liquid cultures. Furthermore, the level of degradation was relatively higher at 25 than at 37 degrees C, but pH variations between 4.5 and 7.0 had little effect on the extent of degradation. Studies with uniformly ring-labeled [14C]benzene and [14C]toluene showed substantial mineralization of these compounds to 14CO2.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Yadav</LastName><ForeName>J S</ForeName><Initials>JS</Initials><AffiliationInfo><Affiliation>Department of Microbiology, Michigan State University, East Lansing 48824-1101.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Reddy</LastName><ForeName>C A</ForeName><Initials>CA</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Appl Environ 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UI="D001554">Benzene</NameOfSubstance></Chemical><Chemical><RegistryNumber>L5I45M5G0O</RegistryNumber><NameOfSubstance UI="C004912">ethylbenzene</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001487" MajorTopicYN="N">Basidiomycota</DescriptorName><QualifierName UI="Q000201" MajorTopicYN="N">enzymology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D001554" MajorTopicYN="N">Benzene</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D001555" MajorTopicYN="N">Benzene Derivatives</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D001673" 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IdType="pubmed">3318677</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Michigan</li></region><settlement><li>East Lansing</li></settlement><orgName><li>Université d'État du Michigan</li></orgName></list><tree><noCountry><name sortKey="Reddy, C A" sort="Reddy, C A" uniqKey="Reddy C" first="C A" last="Reddy">C A Reddy</name></noCountry><country name="États-Unis"><region name="Michigan"><name sortKey="Yadav, J S" sort="Yadav, J S" uniqKey="Yadav J" first="J S" last="Yadav">J S Yadav</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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