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Göteborgs universitets publikationer

Unexpectedly High Beta-Diversity of Root-Associated Fungal Communities in the Bolivian Andes

Författare och institution:
C. J. Barnes (-); C. Maldonado (-); Tobias G Frøslev (Institutionen för biologi och miljövetenskap); Alexandre Antonelli (Institutionen för biologi och miljövetenskap); N. Ronsted (-)
Publicerad i:
Frontiers in Microbiology, 7
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
Bolivia is one of the most biologically diverse countries on the planet. Between the Andes and the Amazon drainage basin spans the Yungas, a vast forested region shown to be extremely species rich in macro-organisms. However, it remains unclear whether this high diversity is also reflected in microbial diversity. Here we assess the genetic, taxonomic and functional diversity of root-associated fungi surrounding Cinchona calisaya trees, a typical element of the intermediate altitudes of the Bolivian Yungas. We determine the relative effects of edaphic properties, climate, and geography in regulating fungal community assembly. We show that alpha-diversity for these fungal communities was similar to temperate and arid ecosystems, averaging 90.1 operational taxonomic units (OTUs) per sample, with reads predominantly assigned to the Ascomycota phylum and with a saprotrophic lifestyle. beta-diversity was calculated as the distance-decay rate, and in contrast to alpha-diversity, was exceptionally high with a rate of -0.407. Soil properties (pH and P) principally regulated fungal community assembly in an analogous manner to temperate environments, with pH and phosphorus explaining 7.8 and 7.2% of community variation respectively. Surprisingly, altitude does not influence community formation, and there is limited evidence that climate (precipitation and temperature) play a role. Our results suggest that sampling should be performed over a wide geographical and environmental range in order to capture the full root-associated fungal diversity in subtropical regions. This study sheds further light on the diversity and distribution of the world's "hidden biodiversity."
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Biologiska vetenskaper ->
root-associated fungi, soil fungi, Cinchona calisaya, fungal spatial-scaling, beta-diversity, arbuscular mycorrhizal fungi, ectomycorrhizal fungi, species richness, altitudinal gradient, cinchona alkaloids, yungas forests, host-range, soil, scale, plant, Microbiology
Postens nummer:
Posten skapad:
2016-09-19 13:32

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