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2016 ; 71
(4
): 962-73
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Fungal Community Assembly in the Amazonian Dark Earth
#MMPMID26585119
Lucheta AR
; Cannavan Fde S
; Roesch LF
; Tsai SM
; Kuramae EE
Microb Ecol
2016[May]; 71
(4
): 962-73
PMID26585119
show ga
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.
|*Soil Microbiology
[MESH]
|Biodiversity
[MESH]
|Brazil
[MESH]
|Ecology
[MESH]
|Fungi/classification/genetics/*growth & development
[MESH]