Plant-driven niche differentiation of ammonia-oxidizing bacteria and archaea in global drylands
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http://hdl.handle.net/10045/97692
Títol: | Plant-driven niche differentiation of ammonia-oxidizing bacteria and archaea in global drylands |
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Autors: | Trivedi, Chanda | Reich, Peter B. | Maestre, Fernando T. | Hu, Hang-Wei | Singh, Brajesh K. | Delgado-Baquerizo, Manuel |
Centre, Departament o Servei: | Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef" |
Paraules clau: | Ammonia-oxidizing bacteria | Ammonia-oxidizing archaea | Global drylands | Niche differentiation |
Àrees de coneixement: | Ecología |
Data de publicació: | 27-de juny-2019 |
Editor: | Springer Nature |
Citació bibliogràfica: | The ISME Journal. 2019, 13: 2727–2736. doi:10.1038/s41396-019-0465-1 |
Resum: | Under controlled laboratory conditions, high and low ammonium availability are known to favor soil ammonia-oxidizing bacteria (AOB) and archaea (AOA) communities, respectively. However, whether this niche segregation is maintained under field conditions in terrestrial ecosystems remains unresolved, particularly at the global scale. We hypothesized that perennial vegetation might favor AOB vs. AOA communities compared with adjacent open areas devoid of perennial vegetation (i.e., bare soil) via several mechanisms, including increasing the amount of ammonium in soil. To test this niche-differentiation hypothesis, we conducted a global field survey including 80 drylands from 6 continents. Data supported our hypothesis, as soils collected under plant canopies had higher levels of ammonium, as well as higher richness (number of terminal restriction fragments; T-RFs) and abundance (qPCR amoA genes) of AOB, and lower richness and abundance of AOA, than those collected in open areas located between plant canopies. Some of the reported associations between plant canopies and AOA and AOB communities can be a consequence of the higher organic matter and available N contents found under plant canopies. Other aspects of soils associated with vegetation including shading and microclimatic conditions might also help explain our results. Our findings provide strong evidence for niche differentiation between AOA and AOB communities in drylands worldwide, advancing our understanding of their ecology and biogeography at the global scale. |
Patrocinadors: | This research is supported by the Australian Research Council projects (DP170104634 and DP190103714), by the European Research Council (BIOCOM project, ERC Grant agreement n°242658) and by the Spanish Ministerio de Economía y Competitividad (BIOMOD project, ref. CGL2013-44661-R). M.D-B. acknowledges support from the Marie Sklodowska-Curie Actions of the Horizon 2020 Framework Programme H2020-MSCA-IF-2016 under REA grant agreement n°702057. FTM acknowledges support from the European Research Council (BIODESERT project, ERC Grant agreement n°647038). |
URI: | http://hdl.handle.net/10045/97692 |
ISSN: | 1751-7362 (Print) | 1751-7370 (Online) |
DOI: | 10.1038/s41396-019-0465-1 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © The Author(s), under exclusive licence to International Society for Microbial Ecology 2019 |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1038/s41396-019-0465-1 |
Apareix a la col·lecció: | Investigacions finançades per la UE Personal Investigador sense Adscripció a Grup INV - DRYLAB - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2019_Trivedi_etal_ISMEJ_final.pdf | Versión final (acceso restringido) | 941,8 kB | Adobe PDF | Obrir Sol·licitar una còpia |
2019_Trivedi_etal_ISMEJ_revised.pdf | Versión revisada (acceso abierto) | 2,32 MB | Adobe PDF | Obrir Vista prèvia |
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