Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1093/ismeco/ycae132
Licence creative commons licence
Title (Primary) Cover crop monocultures and mixtures enhance bacterial abundance and functionality in the maize root zone
Author Ghosh, D. ORCID logo ; Shi, Y.; Zimmermann, I.M.; Stürzebecher, T.; Holzhauser, K.; von Bergen, M.; Kaster, A.-K.; Spielvogel, S.; Dippold, M.A.; Müller, J.A.; Jehmlich, N. ORCID logo
Source Titel ISME Communications
Year 2024
Department MOLTOX
Volume 24
Issue 1
Page From ycae132
Language englisch
Topic T9 Healthy Planet
Data and Software links https://doi.org/10.5281/zenodo.10061192
Supplements https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/ismecommun/PAP/10.1093_ismeco_ycae132/1/supplementary_figures_ycae132.docx?Expires=1733303421&Signature=UP2MSZ384Omgf1aFs6aW4BDWDjJdOL7oeSi0iKudwke5FckW9K3~WW2JEehyjulIsWaq4xQollNX3lYUoeZjzSFda4yMliFs-BxYCeD2YIhTNM6eyejx4p75OeWU5~V2pzkvnug-HNf-t0gjofJN6ukV-675Cm0X5Sjcolq1FZgGVEXf9F6KZjfxI1TWU0TO1Kgipdg6vG0UkWBHmPZHDPp2LrRj~kkASHWdkqIubqq0n8Xr7qD4To2g3cn7eDiRVO17L-pYHMphm4qXV3KrT-LwU11kII~ehjx5mPnf1GrfRkQg0ZR-UU7El24JuQxMqyuNBAnaAtI9rhziAzsQ1Q__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA
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Keywords Cover crop; root channel re-use; bacterial community; rhizosphere; C cycle; N cycle; metaproteomics
Abstract Cover cropping is an effective method to protect agricultural soils from erosion, promote nutrient and moisture retention, encourage beneficial microbial activity, and maintain soil structure. Re-utilization of winter cover crop root channels by maize roots during summer allows the cash crop to extract resources from distal regions in the soil horizon. In this study, we investigated how cover cropping during winter followed by maize (Zea mays L.) during summer affects the spatiotemporal composition and function of the bacterial communities in the maize rhizosphere and surrounding soil samples using quantitative PCR, 16S rRNA gene amplicon sequencing, and metaproteomics. We found that the bacterial community differed significantly among cover crop species, soil depths, and maize growth stages. Bacterial abundance increased in reused root channels, and it continued to increase as cover crop diversity changed from monocultures to mixtures. Mixing Fabaceae with Brassicaceae or Poaceae enhanced the overall contributions of several steps of the bacterial carbon (C) and nitrogen (N) cycles, especially glycolysis and the pentose phosphate pathway. The deeper root channels of Fabaceae and Brassicaceae as compared to Poaceae corresponded to higher bacterial 16S rRNA gene copy numbers and improved community presence in the subsoil regimes, likely due to the increased availability of root exudates secreted by maize roots. In conclusion, root channel reuse improved the expression of metabolic pathways of the C and N cycles and the bacterial communities, which is beneficial to the soil and to the growing crops.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=29842
Ghosh, D., Shi, Y., Zimmermann, I.M., Stürzebecher, T., Holzhauser, K., von Bergen, M., Kaster, A.-K., Spielvogel, S., Dippold, M.A., Müller, J.A., Jehmlich, N. (2024):
Cover crop monocultures and mixtures enhance bacterial abundance and functionality in the maize root zone
ISME Commun. 24 (1), ycae132 10.1093/ismeco/ycae132