MycorrhizaeV1, Main, Exploration, bibRecord, 003867

Soil persistence and biodiversity of ericoid mycorrhizal fungi in the absence of the host plant in a Mediterranean ecosystem.

Identifieur interne : 003867 ( Main/Exploration ); précédent : 003866; suivant : 003868

Soil persistence and biodiversity of ericoid mycorrhizal fungi in the absence of the host plant in a Mediterranean ecosystem.

Auteurs : Roberta Bergero [Italie] ; Mariangela Girlanda ; Federica Bello ; Anna Maria Luppi ; Silvia Perotto

Source :

Mycorrhiza [ 0940-6360 ] ; 2003.

RBID : pubmed:12682828

Descripteurs français

KwdFr :
- Asteraceae (microbiologie), Biodiversité (MeSH), Microbiologie du sol (MeSH), Mycorhizes (physiologie), Quercus (microbiologie), Région méditerranéenne (MeSH), Écosystème (MeSH).
MESH :
- microbiologie : Asteraceae, Quercus.
- physiologie : Mycorhizes.
- Biodiversité, Microbiologie du sol, Région méditerranéenne, Écosystème.

English descriptors

KwdEn :
- Asteraceae (microbiology), Biodiversity (MeSH), Ecosystem (MeSH), Mediterranean Region (MeSH), Mycorrhizae (physiology), Quercus (microbiology), Soil Microbiology (MeSH).
MESH :
- geographic : Mediterranean Region.
- microbiology : Asteraceae, Quercus.
- physiology : Mycorrhizae.
- Biodiversity, Ecosystem, Soil Microbiology.

Abstract

The occurrence of suitable mycorrhizal inocula may be an important factor affecting the dynamics of plant communities. We investigated the persistence and diversity of ericoid mycorrhizal fungi in the soil of a mature Quercus ilex forest where ericaceous hosts were absent. Erica arborea was used as a bait plant and results were compared to soil samples from experimental plots where cuttings had allowed reappearance of this ericaceous species. Fungal endophytes were isolated and tested in mycorrhiza resynthesis trials. Sterile mycorrhizal endophytes were assigned to morphotypes whose consistency was confirmed by ITS-RFLP. The ITS region of a representative of each morphotype was sequenced. BLAST searches and Neighbour-Joining analysis indicated taxonomic affinities with different classes within Ascomycota. Our results indicate that ericoid mycorrhizal fungi persist and maintain mycorrhizal ability in habitats lacking the ericaceous host. Their persistence could favour the establishment of E. arborea seedlings in pure Q. ilex forests after disturbance phenomena.

DOI: 10.1007/s00572-002-0202-9
PubMed: 12682828

Affiliations:

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Le document en format XML

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<term>Mycorrhizae (physiology)</term>
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<front><div type="abstract" xml:lang="en">The occurrence of suitable mycorrhizal inocula may be an important factor affecting the dynamics of plant communities. We investigated the persistence and diversity of ericoid mycorrhizal fungi in the soil of a mature Quercus ilex forest where ericaceous hosts were absent. Erica arborea was used as a bait plant and results were compared to soil samples from experimental plots where cuttings had allowed reappearance of this ericaceous species. Fungal endophytes were isolated and tested in mycorrhiza resynthesis trials. Sterile mycorrhizal endophytes were assigned to morphotypes whose consistency was confirmed by ITS-RFLP. The ITS region of a representative of each morphotype was sequenced. BLAST searches and Neighbour-Joining analysis indicated taxonomic affinities with different classes within Ascomycota. Our results indicate that ericoid mycorrhizal fungi persist and maintain mycorrhizal ability in habitats lacking the ericaceous host. Their persistence could favour the establishment of E. arborea seedlings in pure Q. ilex forests after disturbance phenomena.</div>
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Soil persistence and biodiversity of ericoid mycorrhizal fungi in the absence of the host plant in a Mediterranean ecosystem.

Soil persistence and biodiversity of ericoid mycorrhizal fungi in the absence of the host plant in a Mediterranean ecosystem.

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