Microbial Communities Associated With Long-Term Tillage and Fertility Treatments in a Corn-Soybean Cropping System

Frontiers in Microbiology
Ali Y SrourAhmad M Fakhoury

Abstract

Tillage and fertilization are common practices used to enhance soil fertility and increase yield. Changes in soil edaphic properties associated with different tillage and fertility regimes have been widely examined, yet, the microbially mediated pathways and ecological niches involved in enhancing soil fertility are poorly understood. The effects of long-term conventional tillage and no-till in parallel with three fertility treatments (No fertilization, N-only, and NPK) on soil microbial communities were investigated in a long-term field study that was established in the 1970's. Here, we used high-throughput sequencing of bacterial, fungal and oomycetes markers, followed by community-level functional and ecological assembly to discern principles governing tillage and fertility practices' influence on associated soil microbiomes. Both tillage and fertilizer significantly altered microbial community structure, but the tillage effect was more prominent than the fertilizer effect. Tillage significantly affected bacteria, fungi, fusaria, and oomycete beta-diversity, whereas fertilizer only affected bacteria and fungi beta-diversity. In our study different tillage and fertilizer regimes favored specific networks of metabolic pathways...Continue Reading

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Citations

Jul 6, 2021·Frontiers in Microbiology·Luigi OrrùFlavia Pinzari

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Datasets Mentioned

BETA
SRP242303

Methods Mentioned

BETA
electrophoresis
chip
environmental stress
amplicon sequencing

Software Mentioned

fastq
SAS
FUNGuild inference
PICRUSt
SIMPER
FastX Tool Kit
Primer7
Primer
dada2
R

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