Fungal Community Assembly in the Amazonian Dark Earth

Author(s)

Lucheta, Adriano Reis ^[1] ; Cannavan, Fabiana de Souza ^[2] ; Wurdig Roesch, Luiz Fernando ^[3] ; Tsai, Siu Mui ^[2] ; Kuramae, Eiko Eurya ^[1]

Affiliation

^[1] Netherlands Inst Ecol NIOO KNAW, Dept Microbial Ecol, Droevendaalsesteeg 10, NL-6708 PB Wageningen - Netherlands

^[2] Univ Sao Paulo, CENA, Piracicaba - Brazil

^[3] Univ Fed Pampa, Ctr Interdisciplinar Pesquisas Biotecnol CIP Biot, Sao Gabriel - Brazil

• Document type: Journal article
• Source: MICROBIAL ECOLOGY; v. 71, n. 4, p. 962-973, MAY 2016.
• Web of Science Citations: 7

Abstract

Here, we compare the fungal community composition and diversity in Amazonian Dark Earth (ADE) and the respective non-anthropogenic origin adjacent (ADJ) soils from four different sites in Brazilian Central Amazon using pyrosequencing of 18S ribosomal RNA (rRNA) gene. Fungal community composition in ADE soils were more similar to each other than their ADJ soils, except for only one site. Phosphorus and aluminum saturation were the main soil chemical factors contributing to ADE and ADJ fungal community dissimilarities. Differences in fungal richness were not observed between ADE and ADJ soil pairs regarding to the most sites. In general, the most dominant subphyla present in the soils were Pezizomycotina, Agaricomycotina, and Mortierellomycotina. The most abundant operational taxonomic units (OTUs) in ADE showed similarities with the entomopathogenic fungus Cordyceps confragosa and the saprobes Fomitopsis pinicola, Acremonium vitellinum, and Mortierellaceae sp., whereas OTUs similar to Aspergillus niger, Lithothelium septemseptatum, Heliocephala gracillis, and Pestalosphaeria sp. were more abundant in ADJ soils. Differences in fungal community composition were associated to soil chemical factors in ADE (P, Ca, Zn, Mg, organic matter, sum of bases, and base saturation) and ADJ (Al, potential acidity, Al saturation, B, and Fe) soils. These results contribute to a deeper view of the fungi communities in ADE and open new perspectives for entomopathogenic fungi studies. (AU)

• FAPESP's process: 13/50365-5 - Microbial networks in control of greenhouse gases emissions in biobased agriculture - MiniBag
• Grantee: Heitor Cantarella
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
• FAPESP's process: 11/50914-3 - The microbiome of Amazonian dark earth: structure and function of the microbial communities from rhizosphere and biochar associated to the biogeochemical cycles
• Grantee: Tsai Siu Mui
• Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants