Metabarcoding Reveals Impact of Different Land Uses on Fungal Diversity in the South-Eastern Region of Antioquia, Colombia

Author:

Aranguren Raul1,Voyron Samuele23ORCID,Ungaro Fabrizio4,Cañón Julio1ORCID,Lumini Erica3ORCID

Affiliation:

1. GAIA Research Group, Universidad de Antioquia, Medellín 050010, Colombia

2. Department of Life Sciences and Systems Biology, University of Turin, 10124 Turin, Italy

3. Institute for Sustainable Plant Protection (IPSP), National Research Council (CNR), 10125 Turin, Italy

4. Institute for Bio-Economy (IBE), National Research Council (CNR), 50018 Florence, Italy

Abstract

Changes in soil fungal communities caused by land use have not been sufficiently studied in South American Andosols, which are considered key food production areas. Since fungal communities play an important role in soil functionality, this study analysed 26 soil samples of Andosols collected from locations devoted to conservation, agriculture and mining activities in Antioquia, Colombia, to establish differences between fungal communities as indicators of soil biodiversity loss using Illumina MiSeq metabarcoding on nuclear ribosomal ITS2 region. A non-metric multidimensional scaling allowed to explore driver factors of changes in fungal communities, while the significance of these variations was assessed by PERMANOVA. Furthermore, the effect size of land use over relevant taxa was quantified. Our results suggest a good coverage of fungal diversity with a detection of 353,312 high-quality ITS2 sequences. We found strong correlations of Shannon and Fisher indexes with dissimilarities on fungal communities (r = 0.94). These correlations allow grouping soil samples according to land use. Variations in temperature, air humidity and organic matter content lead to changes in abundances of relevant orders (Wallemiales and Trichosporonales). The study highlights specific sensitivities of fungal biodiversity features in tropical Andosols, which may serve as a basis for robust assessments of soil quality in the region.

Funder

Colombian Ministry of Science, Technology and Innovation “COLCIENCIAS”

Research Group in Environmental Management and Modelling “GAIA” of the University of Antioquia

National Research Council-CNR

Publisher

MDPI AG

Subject

Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics

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