Diversity and specificity of ectomycorrhizal fungi retrieved from an old-growth Mediterranean forest dominated by Quercus ilex.
New Phytol
; 166(3): 1011-23, 2005 Jun.
Article
en En
| MEDLINE
| ID: mdl-15869659
We analysed the ectomycorrhizal (ECM) fungal diversity in a Mediterranean old-growth Quercus ilex forest stand from Corsica (France), where Arbutus unedo was the only other ECM host. On a 6400 m2 stand, we investigated whether oak age and host species shaped below-ground ECM diversity. Ectomycorrhizas were collected under Q. ilex individuals of various ages (1 yr seedlings; 3-10 yr saplings; old trees) and A. unedo. They were typed by ITS-RFLP analysis and identified by match to RFLP patterns of fruitbodies, or by sequencing. A diversity of 140 taxa was found among 558 ectomycorrhizas, with many rare taxa. Cenococcum geophilum dominated (35% of ECMs), as well as Russulaceae, Cortinariaceae and Thelephoraceae. Fungal species richness was comparable above and below ground, but the two levels exhibited < 20% overlap in fungal species composition. Quercus ilex age did not strongly shape ECM diversity. The two ECM hosts, A. unedo and Q. ilex, tended to share few ECM species (< 15% of the ECM diversity). Implications for oak forest dynamics are discussed.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Microbiología del Suelo
/
Árboles
/
Quercus
/
Micorrizas
País/Región como asunto:
Europa
Idioma:
En
Revista:
New Phytol
Asunto de la revista:
BOTANICA
Año:
2005
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Reino Unido