Research article - Peer-reviewed, 2023
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Global diversity and distribution of nitrogen-fixing bacteria in the soil
Sepp, Siim-Kaarel; Vasar, Martti; Davison, John; Oja, Jane; Anslan, Sten; Al-Quraishy, Saleh; Bahram, Mohammad; Bueno, C. Guillermo; Cantero, Juan Jose; Fabiano, Ezequiel Chimbioputo; Decocq, Guillaume; Drenkhan, Rein; Fraser, Lauchlan; Garibay Oriel, Roberto; Hiiesalu, Inga; Koorem, Kadri; Koljalg, Urmas; Moora, Mari; Mucina, Ladislav; opik, Maarja;Show more authors
Abstract
Our knowledge of microbial biogeography has advanced in recent years, yet we lack knowledge of the global diversity of some important functional groups. Here, we used environmental DNA from 327 globally collected soil samples to investigate the biodiversity patterns of nitrogen-fixing bacteria by focusing on the nifH gene but also amplifying the general prokaryotic 16S SSU region. Globally, N-fixing prokaryotic communities are driven mainly by climatic conditions, with most groups being positively correlated with stable hot or seasonally humid climates. Among soil parameters, pH, but also soil N content were most often shown to correlate with the diversity of N-fixer groups. However, specific groups of N-fixing prokaryotes show contrasting responses to the same variables, notably in Cyanobacteria that were negatively correlated with stable hot climates, and showed a U-shaped correlation with soil pH, contrary to other N-fixers. Also, the non-N-fixing prokaryotic community composition was differentially correlated with the diversity and abundance of N-fixer groups, showing the often-neglected impact of biotic interactions among bacteria.Keywords
16S SSU; bacterial diversity; biological N fixation; N-fixing bacterial community; biotic interactions; nifH genePublished in
Frontiers in Plant Science2023, volume: 14, article number: 1100235
Publisher: FRONTIERS MEDIA SA
Authors' information
Sepp, Siim-Kaarel
University of Tartu
Vasar, Martti
University of Tartu
Davison, John
University of Tartu
Oja, Jane
University of Tartu
Anslan, Sten
University of Tartu
Al-Quraishy, Saleh
King Saud University
Swedish University of Agricultural Sciences, Department of Ecology
Bueno, C. Guillermo
University of Tartu
Cantero, Juan Jose
Universidad Nacional Rio Cuarto
Cantero, Juan Jose
Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
Fabiano, Ezequiel Chimbioputo
University of Namibia
Decocq, Guillaume
Universite de Picardie Jules Verne (UPJV)
Drenkhan, Rein
Estonian University of Life Sciences
Garibay Oriel, Roberto
Universidad Nacional Autonoma de Mexico
Hiiesalu, Inga
University of Tartu
Koorem, Kadri
University of Tartu
Koljalg, Urmas
University of Tartu
Moora, Mari
University of Tartu
Mucina, Ladislav
Stellenbosch University
Mucina, Ladislav
Murdoch University
UKÄ Subject classification
Ecology
Publication Identifiers
DOI: https://doi.org/10.3389/fpls.2023.1100235
URI (permanent link to this page)
https://res.slu.se/id/publ/121454