Title
Bacterial composition in maca (Lepidium meyenii Walp) crop soils analyzed by metagenomics: A study in the central Andes of Peru
Other title
Composición bacteriana en suelos de cultivo de maca (Lepidium meyenii Walp) analizada mediante metagenómica: Un estudio en los Andes centrales del Perú
Date Issued
01 April 2021
Access level
open access
Resource Type
journal article
Author(s)
Publisher(s)
Universidad Nacional de Trujillo
Abstract
The change and intensification of land use has been generating impoverishment of soils with negative effects on biological communities. It was analyzed the bacterial composition of maca (Lepidium meyenii Walp) cultivation soils by Illumina sequencing in the Bombón plateau, during 2019. Three sampling sectors were defined, a control sector (natural soil) and two sectors with use pressure ("first use" and "second use" soils). Soil physicochemical indicators were determined through analytical methods and the composition of bacterial communities through Illumina sequencing of 16S rRNA gene amplicons. The results of pH and EC, in control soils and with use pressure, varied from 7.51 to 4.53 and from 0.06 to 0.47 dS/m, respectively. The highest OM, N, P, K and Ca contents were recorded in control soils, decreasing significantly in soils with use pressure. Principal components analysis (PCA) presented a percentage of total variation of 97.1%. Illumina sequencing revealed 3776 bacterial families. SIMPER analysis showed that the highest contribution percentages were made by the Acidobacteriaceae (2.95%), Verrucomicrobiaceae (2.68%), Thermoactinomycetaceae (2.11%) and Akkermansiaceae (2.10%) families. Redundancy analysis (RDA) showed a good association between physicochemical variables and bacterial families. The metagenomic analysis has allowed the identification of bacterial families that can be used as indicators of good and bad soil physicochemical quality according to the pressure of use by maca crops. As well as the best physicochemical indicators predictive of changes in the composition of bacterial communities.
Start page
175
End page
183
Volume
24
Issue
2
Language
Spanish
OCDE Knowledge area
Agricultura
Subjects
Scopus EID
2-s2.0-85106351182
Source
Scientia Agropecuaria
ISSN of the container
20779917
Sources of information:
Directorio de Producción Científica
Scopus