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Medicago species affect the community composition of arbuscular mycorrhizal fungi associated with roots.

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Medicago species affect the community composition of arbuscular mycorrhizal fungi associated with roots.

Auteurs : B. Pivato [France] ; S. Mazurier ; P. Lemanceau ; S. Siblot ; G. Berta ; C. Mougel ; D. Van Tuinen

Source :

The New phytologist [ 0028-646X ] ; 2007.

RBID : pubmed:17803650

Descripteurs français

KwdFr :
- ADN ribosomique (composition chimique), Amorces ADN (MeSH), Banque de gènes (MeSH), Génotype (MeSH), Medicago (microbiologie), Mycorhizes (classification), Mycorhizes (génétique), Mycorhizes (physiologie), Phylogenèse (MeSH), Racines de plante (microbiologie), Spécificité d'espèce (MeSH), Variation génétique (MeSH).
MESH :
- composition chimique : ADN ribosomique, Mycorhizes.
- génétique : Mycorhizes.
- microbiologie : Medicago, Racines de plante.
- physiologie : Mycorhizes.
- Amorces ADN, Banque de gènes, Génotype, Phylogenèse, Spécificité d'espèce, Variation génétique.

English descriptors

KwdEn :
- DNA Primers (MeSH), DNA, Ribosomal (chemistry), Gene Library (MeSH), Genetic Variation (MeSH), Genotype (MeSH), Medicago (microbiology), Mycorrhizae (classification), Mycorrhizae (genetics), Mycorrhizae (physiology), Phylogeny (MeSH), Plant Roots (microbiology), Species Specificity (MeSH).
MESH :
- chemical , chemistry : DNA, Ribosomal.
- chemical : DNA Primers.
- classification : Mycorrhizae.
- genetics : Mycorrhizae.
- microbiology : Medicago, Plant Roots.
- physiology : Mycorrhizae.
- Gene Library, Genetic Variation, Genotype, Phylogeny, Species Specificity.

Abstract

Sequencing of the 5' end of the large ribosomal subunit (LSU rDNA) and quantitative polymerase chain reaction (qPCR) were combined to assess the impact of four annual Medicago species (Medicago laciniata, Medicago murex, Medicago polymorpha and Medicago truncatula) on the genetic diversity of arbuscular mycorrhizal (AM) fungi, and on the relative abundance of representative AM fungal genotypes, in a silty-thin clay soil (Mas d'Imbert, France). Two hundred and forty-six Glomeromycete LSU rDNA sequences from the four plant species and the bulk soil were analysed. The high bootstrap values of the phylogenetic tree obtained allowed the delineation of 12 operational taxonomic units (OTUs), all belonging to Glomus. Specific primers targeting Glomeromycetes and major OTUs were applied to quantify their abundance by qPCR. Glomeromycetes and targeted OTUs were significantly more abundant in the root tissues than in the bulk soil, and the frequencies of three of them differed significantly in the root tissues of the different plant species. These differences indicate that, despite the absence of strict host specificity in mycorrhizal symbiosis, there was a preferential association between some AM fungal and plant genotypes.

DOI: 10.1111/j.1469-8137.2007.02151.x
PubMed: 17803650

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Le document en format XML

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<affiliation wicri:level="1"><nlm:affiliation>INRA, Université de Bourgogne, UMR1229 Microbiologie du Sol et de l'Environnement, CMSE, 17 rue Sully, BP 86510, F-21065 Dijon cedex, France.</nlm:affiliation>
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<author><name sortKey="Berta, G" sort="Berta, G" uniqKey="Berta G" first="G" last="Berta">G. Berta</name>
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<author><name sortKey="Mougel, C" sort="Mougel, C" uniqKey="Mougel C" first="C" last="Mougel">C. Mougel</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>DNA Primers (MeSH)</term>
<term>DNA, Ribosomal (chemistry)</term>
<term>Gene Library (MeSH)</term>
<term>Genetic Variation (MeSH)</term>
<term>Genotype (MeSH)</term>
<term>Medicago (microbiology)</term>
<term>Mycorrhizae (classification)</term>
<term>Mycorrhizae (genetics)</term>
<term>Mycorrhizae (physiology)</term>
<term>Phylogeny (MeSH)</term>
<term>Plant Roots (microbiology)</term>
<term>Species Specificity (MeSH)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>ADN ribosomique (composition chimique)</term>
<term>Amorces ADN (MeSH)</term>
<term>Banque de gènes (MeSH)</term>
<term>Génotype (MeSH)</term>
<term>Medicago (microbiologie)</term>
<term>Mycorhizes (classification)</term>
<term>Mycorhizes (génétique)</term>
<term>Mycorhizes (physiologie)</term>
<term>Phylogenèse (MeSH)</term>
<term>Racines de plante (microbiologie)</term>
<term>Spécificité d'espèce (MeSH)</term>
<term>Variation génétique (MeSH)</term>
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<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>DNA, Ribosomal</term>
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<keywords scheme="MESH" xml:lang="en"><term>Gene Library</term>
<term>Genetic Variation</term>
<term>Genotype</term>
<term>Phylogeny</term>
<term>Species Specificity</term>
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<term>Spécificité d'espèce</term>
<term>Variation génétique</term>
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<front><div type="abstract" xml:lang="en">Sequencing of the 5' end of the large ribosomal subunit (LSU rDNA) and quantitative polymerase chain reaction (qPCR) were combined to assess the impact of four annual Medicago species (Medicago laciniata, Medicago murex, Medicago polymorpha and Medicago truncatula) on the genetic diversity of arbuscular mycorrhizal (AM) fungi, and on the relative abundance of representative AM fungal genotypes, in a silty-thin clay soil (Mas d'Imbert, France). Two hundred and forty-six Glomeromycete LSU rDNA sequences from the four plant species and the bulk soil were analysed. The high bootstrap values of the phylogenetic tree obtained allowed the delineation of 12 operational taxonomic units (OTUs), all belonging to Glomus. Specific primers targeting Glomeromycetes and major OTUs were applied to quantify their abundance by qPCR. Glomeromycetes and targeted OTUs were significantly more abundant in the root tissues than in the bulk soil, and the frequencies of three of them differed significantly in the root tissues of the different plant species. These differences indicate that, despite the absence of strict host specificity in mycorrhizal symbiosis, there was a preferential association between some AM fungal and plant genotypes.</div>
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<Abstract><AbstractText>Sequencing of the 5' end of the large ribosomal subunit (LSU rDNA) and quantitative polymerase chain reaction (qPCR) were combined to assess the impact of four annual Medicago species (Medicago laciniata, Medicago murex, Medicago polymorpha and Medicago truncatula) on the genetic diversity of arbuscular mycorrhizal (AM) fungi, and on the relative abundance of representative AM fungal genotypes, in a silty-thin clay soil (Mas d'Imbert, France). Two hundred and forty-six Glomeromycete LSU rDNA sequences from the four plant species and the bulk soil were analysed. The high bootstrap values of the phylogenetic tree obtained allowed the delineation of 12 operational taxonomic units (OTUs), all belonging to Glomus. Specific primers targeting Glomeromycetes and major OTUs were applied to quantify their abundance by qPCR. Glomeromycetes and targeted OTUs were significantly more abundant in the root tissues than in the bulk soil, and the frequencies of three of them differed significantly in the root tissues of the different plant species. These differences indicate that, despite the absence of strict host specificity in mycorrhizal symbiosis, there was a preferential association between some AM fungal and plant genotypes.</AbstractText>
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Medicago species affect the community composition of arbuscular mycorrhizal fungi associated with roots.

Medicago species affect the community composition of arbuscular mycorrhizal fungi associated with roots.

Source :

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

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