Serveur d'exploration sur le phanerochaete

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An improved transformation vector for the lignin-degrading white rot basidiomycete Phanerochaete chrysosporium.

Identifieur interne : 000F33 ( Main/Exploration ); précédent : 000F32; suivant : 000F34

An improved transformation vector for the lignin-degrading white rot basidiomycete Phanerochaete chrysosporium.

Auteurs : T. Randall [États-Unis] ; C A Reddy

Source :

RBID : pubmed:1879693

Descripteurs français

English descriptors

Abstract

In this study, a lignin peroxidase-encoding gene (LIP) of Phanerochaete chrysosporium was disrupted by inserting into its coding region the kanamycin-resistance determinant from Tn903. The resulting recombinant plasmid, pUGLG1: kan, was transformed into P. chrysosporium with the expectation that the disrupted gene might replace the homologous LIP gene in the chromosome. However, the results showed that pUGLG1: kan sequences do not integrate into the chromosome; instead, the plasmid is maintained intact in the transformants in an extrachromosomal state. Our data also show that pUGLG1: kan undergoes replication in P. chrysosporium, is maintained as a circular element, is recoverable from meiotic and mitotic progeny, although at a low frequency, and can be recovered intact by Escherichia coli transformation. These results suggest that the GLG1 component of pUGLG1: kan contains as yet unidentified sequences that allow its autonomous replication in P. chrysosporium transformants.

DOI: 10.1016/0378-1119(91)90403-x
PubMed: 1879693


Affiliations:


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Le document en format XML

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<nlm:affiliation>Department of Microbiology and Public Health, Michigan State University, East Lansing 48824-1101.</nlm:affiliation>
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<name sortKey="Reddy, C A" sort="Reddy, C A" uniqKey="Reddy C" first="C A" last="Reddy">C A Reddy</name>
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<term>Basidiomycota (genetics)</term>
<term>Basidiomycota (metabolism)</term>
<term>Blotting, Southern (MeSH)</term>
<term>Escherichia coli (genetics)</term>
<term>Genes, Fungal (genetics)</term>
<term>Genetic Vectors (genetics)</term>
<term>Kanamycin Resistance (genetics)</term>
<term>Lignin (metabolism)</term>
<term>Peroxidases (genetics)</term>
<term>Plasmids (genetics)</term>
<term>Transformation, Genetic (genetics)</term>
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<term>Basidiomycota (génétique)</term>
<term>Basidiomycota (métabolisme)</term>
<term>Escherichia coli (génétique)</term>
<term>Gènes fongiques (génétique)</term>
<term>Lignine (métabolisme)</term>
<term>Peroxidases (génétique)</term>
<term>Plasmides (génétique)</term>
<term>Résistance à la kanamycine (génétique)</term>
<term>Technique de Southern (MeSH)</term>
<term>Transformation génétique (génétique)</term>
<term>Vecteurs génétiques (génétique)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en">
<term>Peroxidases</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en">
<term>Lignin</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en">
<term>Basidiomycota</term>
<term>Escherichia coli</term>
<term>Genes, Fungal</term>
<term>Genetic Vectors</term>
<term>Kanamycin Resistance</term>
<term>Plasmids</term>
<term>Transformation, Genetic</term>
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<term>Basidiomycota</term>
<term>Escherichia coli</term>
<term>Gènes fongiques</term>
<term>Peroxidases</term>
<term>Plasmides</term>
<term>Résistance à la kanamycine</term>
<term>Transformation génétique</term>
<term>Vecteurs génétiques</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en">
<term>Basidiomycota</term>
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<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Basidiomycota</term>
<term>Lignine</term>
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<term>Blotting, Southern</term>
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<div type="abstract" xml:lang="en">In this study, a lignin peroxidase-encoding gene (LIP) of Phanerochaete chrysosporium was disrupted by inserting into its coding region the kanamycin-resistance determinant from Tn903. The resulting recombinant plasmid, pUGLG1: kan, was transformed into P. chrysosporium with the expectation that the disrupted gene might replace the homologous LIP gene in the chromosome. However, the results showed that pUGLG1: kan sequences do not integrate into the chromosome; instead, the plasmid is maintained intact in the transformants in an extrachromosomal state. Our data also show that pUGLG1: kan undergoes replication in P. chrysosporium, is maintained as a circular element, is recoverable from meiotic and mitotic progeny, although at a low frequency, and can be recovered intact by Escherichia coli transformation. These results suggest that the GLG1 component of pUGLG1: kan contains as yet unidentified sequences that allow its autonomous replication in P. chrysosporium transformants.</div>
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<Title>Gene</Title>
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<AbstractText>In this study, a lignin peroxidase-encoding gene (LIP) of Phanerochaete chrysosporium was disrupted by inserting into its coding region the kanamycin-resistance determinant from Tn903. The resulting recombinant plasmid, pUGLG1: kan, was transformed into P. chrysosporium with the expectation that the disrupted gene might replace the homologous LIP gene in the chromosome. However, the results showed that pUGLG1: kan sequences do not integrate into the chromosome; instead, the plasmid is maintained intact in the transformants in an extrachromosomal state. Our data also show that pUGLG1: kan undergoes replication in P. chrysosporium, is maintained as a circular element, is recoverable from meiotic and mitotic progeny, although at a low frequency, and can be recovered intact by Escherichia coli transformation. These results suggest that the GLG1 component of pUGLG1: kan contains as yet unidentified sequences that allow its autonomous replication in P. chrysosporium transformants.</AbstractText>
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