Soil structure, nutrient status and water availability shape Uruguayan grassland prokaryotic communities

A - Papers appearing in refereed journals

Garaycochea, S., Romero, H., Beyhaut, E., Neal, A. L. and Altier, N. 2020. Soil structure, nutrient status and water availability shape Uruguayan grassland prokaryotic communities. FEMS Microbiology Ecology. 96 (12), p. fiaa207. https://doi.org/10.1093/femsec/fiaa207

AuthorsGaraycochea, S., Romero, H., Beyhaut, E., Neal, A. L. and Altier, N.
Abstract

Soil microbial communities play critical roles in maintaining natural ecosystems such as the Campos biome grasslands of southern South America. These grasslands are characterized by a high diversity of soils, low available phosphorus (P) and limited water holding capacity. This work aimed to describe prokaryotic communities associated with different soil types and to examine the relationship among these soil communities, the parent material and the soil nutrient status. Five Uruguayan soils with different parent material and nutrient status, under natural grasslands, were compared. The structure and diversity of prokaryotic communities were characterized by sequencing 16S rRNA gene amplicons. Proteobacteria, Actinobacteria, Firmicutes, Verrucomicrobia, Acidobacteria, Planctomycetes, and Chloroflexi were the predominant phyla. Ordination based on several distance measures was able to discriminate clearly between communities associated with different soil types. Edge-PCA phylogeny-sensitive ordination and differential relative abundance analyses identified Archaea and the bacterial phyla Firmicutes, Acidobacteria, Actinobacteria and Verrucomicrobia as those with significant differences among soil types. Canonical analysis of principal coordinates identified porosity, clay content, available P, soil organic carbon and water holding capacity as the main variables contributing to determine the characteristic prokaryotic communities of each soil type.

KeywordsMicrobial communities; Soil structure; Soil nutrients; Campos biome; Soil; Soil physicochemical variables; Prokaryotic communities; Natural grasslands
Year of Publication2020
JournalFEMS Microbiology Ecology
Journal citation96 (12), p. fiaa207
Digital Object Identifier (DOI)https://doi.org/10.1093/femsec/fiaa207
Web address (URL)https://doi.org/10.1093/femsec/fiaa207
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
National Environmental Research Council
Funder project or codeS2N - Soil to Nutrition - Work package 1 (WP1) - Optimising nutrient flows and pools in the soil-plant-biota system
ASSIST - Achieving Sustainable Agricultural Systems
Accepted author manuscript
Output statusPublished
Publication dates
Online10 Oct 2020
Publication process dates
Accepted08 Oct 2020
PublisherAmerican Society for Microbiology
Oxford University Press (OUP)
ISSN0168-6496

Permalink - https://repository.rothamsted.ac.uk/item/96z6v/soil-structure-nutrient-status-and-water-availability-shape-uruguayan-grassland-prokaryotic-communities

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