Skip to main content
Research article - Peer-reviewed, 2021

Lack of Phylogenetic Differences in Ectomycorrhizal Fungi among Distinct Mediterranean Pine Forest Habitats

Adamo, Irene; Castano, Carles; Antonio Bonet, Jose; Colinas, Carlos; Martinez de Aragon, Juan; Alday, Josu G.


Understanding whether the occurrences of ectomycorrhizal species in a given tree host are phylogenetically determined can help in assessing different conservational needs for each fungal species. In this study, we characterized ectomycorrhizal phylogenetic composition and phylogenetic structure in 42 plots with five different Mediterranean pine forests: i.e., pure forests dominated by P. nigra, P. halepensis, and P. sylvestris, and mixed forests of P. nigra-P. halepensis and P. nigra-P. sylvestris, and tested whether the phylogenetic structure of ectomycorrhizal communities differs among these. We found that ectomycorrhizal communities were not different among pine tree hosts neither in phylogenetic composition nor in structure and phylogenetic diversity. Moreover, we detected a weak abiotic filtering effect (4%), with pH being the only significant variable influencing the phylogenetic ectomycorrhizal community, while the phylogenetic structure was slightly influenced by the shared effect of stand structure, soil, and geographic distance. However, the phylogenetic community similarity increased at lower pH values, supporting that fewer, closely related species were found at lower pH values. Also, no phylogenetic signal was detected among exploration types, although short and contact were the most abundant types in these forest ecosystems. Our results demonstrate that pH but not tree host, acts as a strong abiotic filter on ectomycorrhizal phylogenetic communities in Mediterranean pine forests at a local scale. Finally, our study shed light on dominant ectomycorrhizal foraging strategies in drought-prone ecosystems such as Mediterranean forests.


DNA metabarcoding; phylogenetic structure; habitat filtering

Published in

Journal of Fungi
2021, volume: 7, number: 10, article number: 793
Publisher: MDPI

Authors' information

Adamo, Irene
Universitat de Lleida
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology
Antonio Bonet, Jose
Universitat de Lleida
Colinas, Carlos
Universitat de Lleida
Martínez de Aragón, Juan
Forest Sciences Centre of Catalonia (CTFC)
Alday, Josu G.
Universitat de Lleida

UKÄ Subject classification


Publication Identifiers


URI (permanent link to this page)