Ubiquity of insect-derived nitrogen transfer to plants by endophytic insect-pathogenic fungi: an additional branch of the soil nitrogen cycle

Applied and Environmental Microbiology
Scott W Behie, Michael J Bidochka

Abstract

The study of symbiotic nitrogen transfer in soil has largely focused on nitrogen-fixing bacteria. Vascular plants can lose a substantial amount of their nitrogen through insect herbivory. Previously, we showed that plants were able to reacquire nitrogen from insects through a partnership with the endophytic, insect-pathogenic fungus Metarhizium robertsii. That is, the endophytic capability and insect pathogenicity of M. robertsii are coupled so that the fungus acts as a conduit to provide insect-derived nitrogen to plant hosts. Here, we assess the ubiquity of this nitrogen transfer in five Metarhizium species representing those with broad (M. robertsii, M. brunneum, and M. guizhouense) and narrower insect host ranges (M. acridum and M. flavoviride), as well as the insect-pathogenic fungi Beauveria bassiana and Lecanicillium lecanii. Insects were injected with (15)N-labeled nitrogen, and we tracked the incorporation of (15)N into two dicots, haricot bean (Phaseolus vulgaris) and soybean (Glycine max), and two monocots, switchgrass (Panicum virgatum) and wheat (Triticum aestivum), in the presence of these fungi in soil microcosms. All Metarhizium species and B. bassiana but not L. lecanii showed the capacity to transfer nitrogen ...Continue Reading

References

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Citations

Sep 30, 2014·BMC Genomics·Charley Christian StaatsAugusto Schrank
Jul 16, 2014·Trends in Plant Science·Scott W Behie, Michael J Bidochka
Jun 10, 2015·Proceedings of the National Academy of Sciences of the United States of America·Nicolás PedriniNemat O Keyhani
Dec 9, 2015·Plant Molecular Biology·Larissa BarelliMichael J Bidochka
Sep 27, 2015·Journal of Invertebrate Pathology·Bernhardt M SteinwenderNicolai V Meyling
Sep 23, 2014·Current Genetics·Brian Lovett, Raymond J St Leger
Mar 23, 2017·Insect Science·Gregory A SwordMaria Julissa Ek-Ramos
Aug 13, 2014·Current Genetics·Almudena Ortiz-Urquiza, Nemat O Keyhani
Jan 18, 2017·Nature Communications·Scott W BehieMichael J Bidochka
Oct 13, 2018·Microbiology·Larissa BarelliMichael J Bidochka
Dec 17, 2014·Applied Microbiology and Biotechnology·Almudena Ortiz-UrquizaNemat O Keyhani
Jul 19, 2019·PLoS Pathogens·Margaret BranineSara Branco
Apr 10, 2018·Frontiers in Microbiology·Bamisope S BamisileLiande Wang
May 29, 2018·Applied Microbiology and Biotechnology·Drion G BouciasNemat O Keyhani
Sep 8, 2018·Environmental Entomology·Jason S Martin, Mark S Bulmer
Nov 2, 2019·Journal of Applied Microbiology·S Hu, M J Bidochka
Jun 11, 2020·PeerJ·Noemi Carla BaronEverlon Cid Rigobelo
Sep 15, 2017·Pest Management Science·Brian Lovett, Raymond John St Leger
Oct 22, 2019·PeerJ·Paula Leoro-GarzonAurélien Tartar
Oct 22, 2020·Applied Microbiology and Biotechnology·Lauren B L Stone, Michael J Bidochka
Dec 10, 2020·Open Biology·Raymond J St Leger, Jonathan B Wang
Mar 4, 2017·Microbiology Spectrum·Brian Lovett, Raymond J St Leger
Jul 3, 2021·Microorganisms·María Fernández-BravoJürg Enkerli

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