The Pedological Context Modulates the Response of Soil Microbial Communities to Agroecological Management

Eukaryotes in soil aggregates across conservation managements: Major roles of protists, fungi and taxa linkages in soil structuring and C stock

“…Similarly, the high abundance of Cercozoa in mM under CTN0 suggests for the first time that this phylum plays a major role within mM under ploughed and no fertilized conditions at surface layer. This is consistent with the findings of Degrune et al (2019a) that highlighted under ploughing and at topsoil distinct cercozoan communities in microhabitats (i.e., drilosphere and rhizosphere) compared with bulk soil.…”

“…Our findings on the positive association of protists, Alveolata and Cercozoa, with the amount of sM and mM and their SOC content, support the multiple agroecological roles of protists found in bulk soil (Cavalier-Smith and Chao, 2003;Delgado-Baquerizo et al, 2020). Moreover, our results confirm previous works reporting that protists are shaped by pore size reduction and soil aeration (Berisso et al, 2012;Degrune et al, 2019a), features related to soil aggregates. Thus, we can assume that Alveolata are playing major role in soil, promoting sM formation and slowing down the decay of SOM within sM, while Cercozoa are crucial microorganisms in mM taking part to long-term sequestration and storing of SOC.…”

“…By contrast, Treonis et al (2018) analysing the whole eukaryotic structure in bulk soil found a high abundance of fungi, Arthropoda, Nematoda and Anellida (40, 20, 20 and 11%, respectively), and a low abundance of protists (0.63%). Among protists, Rhizaria was the group with the highest relative abundance in arable soil, comprising as dominant taxa Cercozoa and Amoebozoa (Bates et al, 2013;Degrune et al, 2019a;Santos et al, 2020). Similarly, in another study, fungi were reported to be the most abundant (i.e., Ascomycota, Basidiomycota, fungi Incertae sedis and Glomeromycota), followed by Alveolata, Metazoa, Rhizaria, Stramenopiles, and Viridiplantae (Chen et al, 2012).…”

Plant Microbiota Beyond Farming Practices: A Review

“…Indeed, most studies describe plowing as one of the major drivers of soil microbiome diversity along with pedological context and farming practices such as organic management or cover crops (Hartmann et al, 2015;Wang et al, 2017;Alahmad et al, 2019;Babin et al, 2019;Degrune et al, 2019). Tilling regimes impact soil and plant microbial communities in terms of their diversity, structure, and composition.…”

Response of Plant Rhizosphere Microenvironment to Water Management in Soil- and Substrate-Based Controlled Environment Agriculture (CEA) Systems: A Review

“…It is crucial to reduce the maintenance cost brought about by substrate renewal on one hand, but, more importantly, to serve a long-term, sustained, and high-yield artificial agriculture system by constructing a specific rhizosphere microenvironment ( Philippot et al, 2013 ; Qin et al, 2019 ). Furthermore, proper water management should focus on the availability of nutrients related to microbiology, as it is crucial to fostering the presence of beneficial microbes and reducing the level of pathogenic microbes, thus achieving system sustainability and benign output ( Fierer, 2017 ; Degrune et al, 2019 ).…”