Temporal recovery of soil biological activity and diversity after 915-MHz microwave treatments
| Autor: | Brigitte Brunel, Géraldine Maynaud, Frédéric Mahé, Cécile Villenave, Ezékiel Baudoin, Jean-Claude Cleyet-Marel |
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| Přispěvatelé: | Laboratoire des symbioses tropicales et méditerranéennes (UMR LSTM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Département Systèmes Biologiques (Cirad-BIOS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Elisol Environnement, BPI France, Provence Alpes Cote d'Azur, Occitanie region, Ain local authority |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Firmicutes Soil Science Microbiology Actinobacteria 03 medical and health sciences chemistry.chemical_compound Microbial indicators Food science Relative species abundance Soil heating 030304 developmental biology Nematode 2. Zero hunger 0303 health sciences biology Fluorescein diacetate hydrolysis Bacteria Resilience Chemistry Bacteroidetes 04 agricultural and veterinary sciences Disturbance biology.organism_classification Chloroflexi (class) 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Proteobacteria Agronomy and Crop Science Acidobacteria |
| Zdroj: | Biology and Fertility of Soils Biology and Fertility of Soils, Springer Verlag, 2021, 57 (5), pp.603-616. ⟨10.1007/s00374-021-01553-5⟩ |
| ISSN: | 0178-2762 1432-0789 |
| DOI: | 10.1007/s00374-021-01553-5⟩ |
| Popis: | International audience; Two 915-MHz microwave treatments (2 kW-8 min and 4 kW-4 min) were applied to soil and their effects were monitored just after treatments (T0) and 26 days (T26) in soil microcosms. Densities of culturable bacteria, fluorescent pseudomonads and nematodes, hydrolysis activity and soil DNA content declined by over 50% immediately after both microwave treatments (T0), excluding the total fungal 18S rRNA (-13 or -17%) and bacterial 16S rRNA copies (non-significant). A rapid shift in bacterial community composition occurred from T0 towards a large increase in the relative abundance of Firmicutes (+1650%) and a concomitant decrease in various phyla (e.g. Acidobacteria, Actinobacteria, Bacteroidetes, Proteobacteria) from -85 to -61%. At T26 and for both treatments, fluorescein diacetate hydrolysis, density of culturable bacteria, 18S rRNA gene numbers, Simpson diversity, relative abundances of Bacteroidetes and Proteobacteria regained levels similar to controls. Alpha, Delta and Gamma classes Proteobacteria also end up reaching a similar level. In contrast, fluorescent pseudomonad density, nematode diversity and abundance, soil DNA content and relative abundances of some phylum (Acidobacteria, Actinobacteria, Chloroflexi) did not increase in such proportions. Most of the soil biological properties have not been permanently impacted. Nevertheless, the recovery kinetics highly differed according properties, with resilience indices at T26 varying from -87 to +99%. |
| Databáze: | OpenAIRE |
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