TreeMicInterV1, Main, Exploration, bibRecord, 000260

Characterization and regulation of PiDur3, a permease involved in the acquisition of urea by the ectomycorrhizal fungus Paxillus involutus.

Identifieur interne : 000260 ( Main/Exploration ); précédent : 000259; suivant : 000261

Characterization and regulation of PiDur3, a permease involved in the acquisition of urea by the ectomycorrhizal fungus Paxillus involutus.

Auteurs : Mélanie Morel [France] ; Christophe Jacob ; Michael Fitz ; Daniel Wipf ; Michel Chalot ; Annick Brun

Source :

Fungal genetics and biology : FG & B [ 1096-0937 ] ; 2008.

RBID : pubmed:18313954

Descripteurs français

English descriptors

KwdEn :
- Cloning, Molecular (MeSH), Fungal Proteins (genetics), Fungal Proteins (metabolism), Gene Expression Regulation, Fungal (MeSH), Kinetics (MeSH), Membrane Transport Proteins (genetics), Membrane Transport Proteins (metabolism), Molecular Sequence Data (MeSH), Mycorrhizae (enzymology), Mycorrhizae (genetics), Mycorrhizae (metabolism), Nitrogen Compounds (metabolism), Phylogeny (MeSH), Sequence Homology, Amino Acid (MeSH), Urea (metabolism), Yeasts (genetics), Yeasts (metabolism).
MESH :
- chemical , genetics : Fungal Proteins, Membrane Transport Proteins.
- chemical , metabolism : Fungal Proteins, Membrane Transport Proteins, Nitrogen Compounds, Urea.
- enzymology : Mycorrhizae.
- genetics : Mycorrhizae, Yeasts.
- metabolism : Mycorrhizae, Yeasts.
- Cloning, Molecular, Gene Expression Regulation, Fungal, Kinetics, Molecular Sequence Data, Phylogeny, Sequence Homology, Amino Acid.

Abstract

Urea, which is known to be a source of nitrogen for the growth of many organisms, represents an important fertilizer in forest soils. Since most trees form symbiotic associations with ectomycorrhizal fungi, the capacities of these symbionts to take up and assimilate urea would determine the efficiency of urea nitrogen salvaging by plants. We showed that Paxillusinvolutus, an ectomycorrhizal basidiomycete, is capable of using urea as sole nitrogen source. We report the molecular characterization of an active urea transporter (PiDur3) isolated from this fungus. We demonstrated that the import of urea is a minor event on ammonium condition, since the expression of PiDUR3 is repressed by the high intracellular glutamine pool. Interestingly, on urea nutritive condition, the uptake of urea is rather mediated by the intracellular urea pool and particularly by urease efficiency.

DOI: 10.1016/j.fgb.2008.01.002
PubMed: 18313954

Affiliations:

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Le document en format XML

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<author><name sortKey="Wipf, Daniel" sort="Wipf, Daniel" uniqKey="Wipf D" first="Daniel" last="Wipf">Daniel Wipf</name>
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<term>Fungal Proteins (metabolism)</term>
<term>Gene Expression Regulation, Fungal (MeSH)</term>
<term>Kinetics (MeSH)</term>
<term>Membrane Transport Proteins (genetics)</term>
<term>Membrane Transport Proteins (metabolism)</term>
<term>Molecular Sequence Data (MeSH)</term>
<term>Mycorrhizae (enzymology)</term>
<term>Mycorrhizae (genetics)</term>
<term>Mycorrhizae (metabolism)</term>
<term>Nitrogen Compounds (metabolism)</term>
<term>Phylogeny (MeSH)</term>
<term>Sequence Homology, Amino Acid (MeSH)</term>
<term>Urea (metabolism)</term>
<term>Yeasts (genetics)</term>
<term>Yeasts (metabolism)</term>
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<term>Clonage moléculaire (MeSH)</term>
<term>Composés de l'azote (métabolisme)</term>
<term>Données de séquences moléculaires (MeSH)</term>
<term>Levures (génétique)</term>
<term>Levures (métabolisme)</term>
<term>Mycorhizes (enzymologie)</term>
<term>Mycorhizes (génétique)</term>
<term>Mycorhizes (métabolisme)</term>
<term>Phylogenèse (MeSH)</term>
<term>Protéines de transport membranaire (génétique)</term>
<term>Protéines de transport membranaire (métabolisme)</term>
<term>Protéines fongiques (génétique)</term>
<term>Protéines fongiques (métabolisme)</term>
<term>Régulation de l'expression des gènes fongiques (MeSH)</term>
<term>Similitude de séquences d'acides aminés (MeSH)</term>
<term>Urée (métabolisme)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Fungal Proteins</term>
<term>Membrane Transport Proteins</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Fungal Proteins</term>
<term>Membrane Transport Proteins</term>
<term>Nitrogen Compounds</term>
<term>Urea</term>
</keywords>
<keywords scheme="MESH" qualifier="enzymologie" xml:lang="fr"><term>Mycorhizes</term>
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<keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Mycorrhizae</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Mycorrhizae</term>
<term>Yeasts</term>
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<term>Mycorhizes</term>
<term>Protéines de transport membranaire</term>
<term>Protéines fongiques</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mycorrhizae</term>
<term>Yeasts</term>
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<term>Levures</term>
<term>Mycorhizes</term>
<term>Protéines de transport membranaire</term>
<term>Protéines fongiques</term>
<term>Urée</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Cloning, Molecular</term>
<term>Gene Expression Regulation, Fungal</term>
<term>Kinetics</term>
<term>Molecular Sequence Data</term>
<term>Phylogeny</term>
<term>Sequence Homology, Amino Acid</term>
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<term>Clonage moléculaire</term>
<term>Données de séquences moléculaires</term>
<term>Phylogenèse</term>
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<front><div type="abstract" xml:lang="en">Urea, which is known to be a source of nitrogen for the growth of many organisms, represents an important fertilizer in forest soils. Since most trees form symbiotic associations with ectomycorrhizal fungi, the capacities of these symbionts to take up and assimilate urea would determine the efficiency of urea nitrogen salvaging by plants. We showed that Paxillusinvolutus, an ectomycorrhizal basidiomycete, is capable of using urea as sole nitrogen source. We report the molecular characterization of an active urea transporter (PiDur3) isolated from this fungus. We demonstrated that the import of urea is a minor event on ammonium condition, since the expression of PiDUR3 is repressed by the high intracellular glutamine pool. Interestingly, on urea nutritive condition, the uptake of urea is rather mediated by the intracellular urea pool and particularly by urease efficiency.</div>
</front>
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<Abstract><AbstractText>Urea, which is known to be a source of nitrogen for the growth of many organisms, represents an important fertilizer in forest soils. Since most trees form symbiotic associations with ectomycorrhizal fungi, the capacities of these symbionts to take up and assimilate urea would determine the efficiency of urea nitrogen salvaging by plants. We showed that Paxillusinvolutus, an ectomycorrhizal basidiomycete, is capable of using urea as sole nitrogen source. We report the molecular characterization of an active urea transporter (PiDur3) isolated from this fungus. We demonstrated that the import of urea is a minor event on ammonium condition, since the expression of PiDUR3 is repressed by the high intracellular glutamine pool. Interestingly, on urea nutritive condition, the uptake of urea is rather mediated by the intracellular urea pool and particularly by urease efficiency.</AbstractText>
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Characterization and regulation of PiDur3, a permease involved in the acquisition of urea by the ectomycorrhizal fungus Paxillus involutus.

Characterization and regulation of PiDur3, a permease involved in the acquisition of urea by the ectomycorrhizal fungus Paxillus involutus.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki