PoplarV1, Main, Exploration, bibRecord, 004554

Mycorrhizal colonization of transgenic aspen in a field trial.

Identifieur interne : 004554 ( Main/Exploration ); précédent : 004553; suivant : 004555

Mycorrhizal colonization of transgenic aspen in a field trial.

Auteurs : Michael Kaldorf [Allemagne] ; Matthias Fladung ; Hans J. Muhs ; François Buscot

Source :

Planta [ 0032-0935 ] ; 2002.

RBID : pubmed:11925050

Descripteurs français

KwdFr :
- Champignons (classification), Champignons (croissance et développement), Champignons (génétique), Polymorphisme de restriction (MeSH), Racines de plante (microbiologie), Salicaceae (croissance et développement), Salicaceae (génétique), Salicaceae (microbiologie), Spécificité d'espèce (MeSH), Symbiose (MeSH), Végétaux génétiquement modifiés (génétique), Végétaux génétiquement modifiés (microbiologie), bêta-Glucosidase (génétique).
MESH :
- croissance et développement : Champignons, Salicaceae.
- génétique : Champignons, Salicaceae, Végétaux génétiquement modifiés, bêta-Glucosidase.
- microbiologie : Racines de plante, Salicaceae, Végétaux génétiquement modifiés.
- Polymorphisme de restriction, Spécificité d'espèce, Symbiose.

English descriptors

KwdEn :
- Fungi (classification), Fungi (genetics), Fungi (growth & development), Plant Roots (microbiology), Plants, Genetically Modified (genetics), Plants, Genetically Modified (microbiology), Polymorphism, Restriction Fragment Length (MeSH), Salicaceae (genetics), Salicaceae (growth & development), Salicaceae (microbiology), Species Specificity (MeSH), Symbiosis (MeSH), beta-Glucosidase (genetics).
MESH :
- chemical , genetics : beta-Glucosidase.
- classification : Fungi.
- genetics : Fungi, Plants, Genetically Modified, Salicaceae.
- growth & development : Fungi, Salicaceae.
- microbiology : Plant Roots, Plants, Genetically Modified, Salicaceae.
- Polymorphism, Restriction Fragment Length, Species Specificity, Symbiosis.

Abstract

Mycorrhizal colonization of genetically modified hybrid aspen (Populus tremula x P. tremuloides Michx.) was investigated over 15 months in a field experiment. The aspen carried the rolC gene from Agrobacterium rhizogenes under control of either the constitutive cauliflower mosaic virus 35S promoter or the light-inducible rbcS promoter. Arbuscular mycorrhizas (AMs) were rare in all root samples, while fully developed ectomycorrhizas (EMs) were found in all samples. No significant differences in the degree of mycorrhizal colonization between aspen lines were seen with either AMs or EMs. The EM community on the release area was dominated by four fungal species that formed more than 90% of all mycorrhizas, while eleven EM types were found occasionally. Mycorrhizal diversity did not differ between transgenic and non-transgenic trees. The structure of mycorrhizal communities was similar for most aspen lines. The sole significant difference was found in the abundance and development of one of the four common EM morphotypes, which was rare and poorly developed on roots from the transgenic aspen line Esch5:35S-rolC-#5 compared with non-transgenic controls. This effect is clone specific as the formation of this EM type was not affected by the transgene expression in the other transgenic line, Esch5:35S-rolC-#1. This is the first demonstration of a clonal effect influencing the ability of a transgenic plant to form a mycorrhizal symbiosis with a potential fungal partner.

DOI: 10.1007/s004250100658
PubMed: 11925050

Affiliations:

Allemagne

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Mycorrhizal colonization of genetically modified hybrid aspen (Populus tremula x P. tremuloides Michx.) was investigated over 15 months in a field experiment. The aspen carried the rolC gene from Agrobacterium rhizogenes under control of either the constitutive cauliflower mosaic virus 35S promoter or the light-inducible rbcS promoter. Arbuscular mycorrhizas (AMs) were rare in all root samples, while fully developed ectomycorrhizas (EMs) were found in all samples. No significant differences in the degree of mycorrhizal colonization between aspen lines were seen with either AMs or EMs. The EM community on the release area was dominated by four fungal species that formed more than 90% of all mycorrhizas, while eleven EM types were found occasionally. Mycorrhizal diversity did not differ between transgenic and non-transgenic trees. The structure of mycorrhizal communities was similar for most aspen lines. The sole significant difference was found in the abundance and development of one of the four common EM morphotypes, which was rare and poorly developed on roots from the transgenic aspen line Esch5:35S-rolC-#5 compared with non-transgenic controls. This effect is clone specific as the formation of this EM type was not affected by the transgene expression in the other transgenic line, Esch5:35S-rolC-#1. This is the first demonstration of a clonal effect influencing the ability of a transgenic plant to form a mycorrhizal symbiosis with a potential fungal partner.</div>
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<Abstract><AbstractText>Mycorrhizal colonization of genetically modified hybrid aspen (Populus tremula x P. tremuloides Michx.) was investigated over 15 months in a field experiment. The aspen carried the rolC gene from Agrobacterium rhizogenes under control of either the constitutive cauliflower mosaic virus 35S promoter or the light-inducible rbcS promoter. Arbuscular mycorrhizas (AMs) were rare in all root samples, while fully developed ectomycorrhizas (EMs) were found in all samples. No significant differences in the degree of mycorrhizal colonization between aspen lines were seen with either AMs or EMs. The EM community on the release area was dominated by four fungal species that formed more than 90% of all mycorrhizas, while eleven EM types were found occasionally. Mycorrhizal diversity did not differ between transgenic and non-transgenic trees. The structure of mycorrhizal communities was similar for most aspen lines. The sole significant difference was found in the abundance and development of one of the four common EM morphotypes, which was rare and poorly developed on roots from the transgenic aspen line Esch5:35S-rolC-#5 compared with non-transgenic controls. This effect is clone specific as the formation of this EM type was not affected by the transgene expression in the other transgenic line, Esch5:35S-rolC-#1. This is the first demonstration of a clonal effect influencing the ability of a transgenic plant to form a mycorrhizal symbiosis with a potential fungal partner.</AbstractText>
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Mycorrhizal colonization of transgenic aspen in a field trial.

Mycorrhizal colonization of transgenic aspen in a field trial.

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