What question did this study set out to answer?

To assess how regional soil chemistry and distinct agricultural practices influence the diversity, abundance, and structure of nitrogen-fixing bacterial communities across agricultural soil gradients.

February 17, 2014Environmental MicrobiologyOpen Access

nifH pyrosequencing reveals the potential for location‐specific soil chemistry to influence N 2 ‐fixing community dynamics

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Authors

MCMónica M. CollavinoNational University of the Northeast HTH. James TrippJoint Genome Institute IFIldiko E. FrankUniversity of California, Santa Cruz

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Implication

Longitudinal field study reveals distinct soil chemistry and management impacts on diazotrophic communities across agricultural soils, highlighting pathways to sustainably boost crop yields.

Key Points

To assess how regional soil chemistry and distinct agricultural practices influence the diversity, abundance, and structure of nitrogen-fixing bacterial communities across agricultural soil gradients.
Sequenced 87,020 nifH gene reads and identified 16,782 unique protein sequences across a 2-year period from four agricultural soil sites in Argentina.
Quantified nifH gene abundance using quantitative real-time PCR and analyzed community structure and diversity relative to soil chemistry using ANOVA and stepwise regression modeling.
Bacterial communities were dominated by Alphaproteobacteria, Betaproteobacteria, and Deltaproteobacteria—especially relatives of Bradyrhizobium and Methylosinus/Methylocystis—while Gammaproteobacteria were sparsely represented.
nifH gene abundance was higher in agricultural soils than non-agricultural soils and was modulated by soil chemistry under intensive crop rotation, though not under monoculture systems.
Soil type and site location drove diazotrophic community composition, whereas organic carbon concentration specifically determined nifH diversity.

Cite This Study

Collavino et al. (2014) studied this question.

synapsesocial.com/papers/6a7d319e3575152c8237d4c8 https://doi.org/10.1111/1462-2920.12423

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Implication

Longitudinal field study reveals distinct soil chemistry and management impacts on diazotrophic communities across agricultural soils, highlighting pathways to sustainably boost crop yields.

nifH pyrosequencing reveals the potential for location‐specific soil chemistry to influence N 2 ‐fixing community dynamics

Discussion

Member takes

Implication

Key Points

Cite This Study

nifH pyrosequencing reveals the potential for location‐specific soil chemistry to influence N 2 ‐fixing community dynamics

Discussion

Member takes

Implication

Key Points

Cite This Study

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