Host specificity in fungal endophytic populations of Quercus ilex and Quercus faginea from Central Spain

Citation
J. Collado et al., Host specificity in fungal endophytic populations of Quercus ilex and Quercus faginea from Central Spain, NOVA HEDWIG, 71(3-4), 2000, pp. 421-430
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
NOVA HEDWIGIA
ISSN journal
0029-5035 → ACNP
Volume
71
Issue
3-4
Year of publication
2000
Pages
421 - 430
Database
ISI
SICI code
0029-5035(2000)71:3-4<421:HSIFEP>2.0.ZU;2-B
Abstract
A comparative study of the endophytic fungal assemblages of Quercus ilex su bsp. ballota and Quercus faginea subsp. faginea was carried out on 10 trees growing in a Mediterranean forest in Central Spain. Endophytes from bark, twigs and fresh leaves were isolated from both tree species. As observed fo r other taxonomically related hosts, a certain overlapping between the endo phytic mycoflora in both Quercus species was found. The most frequent fungu s in both host species was Pyrenochaeta sp., an anamorph of Dothideales. Ne vertheless, a certain degree of host specificity in fungal endophytic infec tion was detected, when the frequencies of the most commonly isolated endop hytes were statistically analysed. The tree species affects significantly t he distribution of almost all the fungi with isolation frequencies equal or higher than 2%. Moreover, some dominant fungal taxa could be isolated only from a particular host (Q. ilex or Q. faginea). A cluster analysis of the trees computed on the base of the similarity of their whole of fungal popul ations confirmed that there is an evident influence of the host species on the composition of the fungal assemblages of the trees. However, this effec t does not appear to be always the main determinant of the composition of t he fungal assemblages analysed.