MycorrhizaeV1, Main, Corpus, bibRecord, 002A64

Facilitated establishment of Quercus ilex in shrub-dominated communities within a Mediterranean ecosystem: do mycorrhizal partners matter?

Identifieur interne : 002A64 ( Main/Corpus ); précédent : 002A63; suivant : 002A65

Facilitated establishment of Quercus ilex in shrub-dominated communities within a Mediterranean ecosystem: do mycorrhizal partners matter?

Auteurs : Franck Richard ; Marc-André Selosse ; Monique Gardes

Source :

FEMS microbiology ecology [ 1574-6941 ] ; 2009.

RBID : pubmed:19175678

English descriptors

KwdEn :
- DNA, Fungal (genetics), Droughts (MeSH), Ecosystem (MeSH), Ericaceae (microbiology), Mediterranean Region (MeSH), Mycorrhizae (genetics), Mycorrhizae (physiology), Polymorphism, Restriction Fragment Length (MeSH), Quercus (microbiology), Seedlings (microbiology), Soil Microbiology (MeSH), Species Specificity (MeSH), Symbiosis (MeSH), Trees (microbiology).
MESH :
- chemical , genetics : DNA, Fungal.
- geographic : Mediterranean Region.
- genetics : Mycorrhizae.
- microbiology : Ericaceae, Quercus, Seedlings, Trees.
- physiology : Mycorrhizae.
- Droughts, Ecosystem, Polymorphism, Restriction Fragment Length, Soil Microbiology, Species Specificity, Symbiosis.

Abstract

Positive plant-plant interaction is a widespread phenomenon, especially in harsh environments, which can contribute to secondary successions. Here, we investigated whether Arbutus unedo positively influences Quercus ilex establishment in shrub communities by abiotic and/or biotic interactions in a Mediterranean forest ecosystem, where we previously showed that A. unedo and Q. ilex share numerous species of mycorrhizal fungi. In a first field experiment, patterns of Q. ilex survivorship were documented. During the summer following germination, a majority of seedlings survived in A. unedo chaparral (AU), whereas most of them died in previous succession stages dominated by Erica arborea (EA). These results showed that survival of the Q. ilex seedling is succession stage dependent, probably due to the differential effects of the summer drought. In a second experiment, Q. ilex seedlings were used as bait plants to investigate the mycorrhizal inoculum in EA and AU. Morphotyping and molecular typing revealed 2.5 times higher colonization in AU than in EA, with more diverse fungi. Our results demonstrate that A. unedo facilitates mycorrhization of Q. ilex by hosting compatible ectomycorrhizal symbionts and positively influences seedling survival by buffering abiotic conditions. A comprehensive understanding of facilitation should thus include investigations of the soil biological patterns.

DOI: 10.1111/j.1574-6941.2009.00646.x
PubMed: 19175678

Links to Exploration step

pubmed:19175678

Le document en format XML

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<affiliation><nlm:affiliation>UMR 5174 Evolution et Diversité Biologique, Université Toulouse III Paul Sabatier, Toulouse, France. franck.richard@cefe.cnrs.fr</nlm:affiliation>
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<author><name sortKey="Selosse, Marc Andre" sort="Selosse, Marc Andre" uniqKey="Selosse M" first="Marc-André" last="Selosse">Marc-André Selosse</name>
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<author><name sortKey="Gardes, Monique" sort="Gardes, Monique" uniqKey="Gardes M" first="Monique" last="Gardes">Monique Gardes</name>
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<front><div type="abstract" xml:lang="en">Positive plant-plant interaction is a widespread phenomenon, especially in harsh environments, which can contribute to secondary successions. Here, we investigated whether Arbutus unedo positively influences Quercus ilex establishment in shrub communities by abiotic and/or biotic interactions in a Mediterranean forest ecosystem, where we previously showed that A. unedo and Q. ilex share numerous species of mycorrhizal fungi. In a first field experiment, patterns of Q. ilex survivorship were documented. During the summer following germination, a majority of seedlings survived in A. unedo chaparral (AU), whereas most of them died in previous succession stages dominated by Erica arborea (EA). These results showed that survival of the Q. ilex seedling is succession stage dependent, probably due to the differential effects of the summer drought. In a second experiment, Q. ilex seedlings were used as bait plants to investigate the mycorrhizal inoculum in EA and AU. Morphotyping and molecular typing revealed 2.5 times higher colonization in AU than in EA, with more diverse fungi. Our results demonstrate that A. unedo facilitates mycorrhization of Q. ilex by hosting compatible ectomycorrhizal symbionts and positively influences seedling survival by buffering abiotic conditions. A comprehensive understanding of facilitation should thus include investigations of the soil biological patterns.</div>
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Facilitated establishment of Quercus ilex in shrub-dominated communities within a Mediterranean ecosystem: do mycorrhizal partners matter?

Facilitated establishment of Quercus ilex in shrub-dominated communities within a Mediterranean ecosystem: do mycorrhizal partners matter?

Source :

English descriptors

Abstract

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