Land use and season drive changes in soil microbial communities and related functions in agricultural soils

Madegwa, Yvonne Musavi; Uchida, Yoshitaka

doi:10.1002/edn3.244

Cited by 17 publications

(11 citation statements)

References 98 publications

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“…The significant difference in bacterial community structure between MC and EXT_DP seen at sampling event 1 did persist into sampling event 2, but not into the four subsequent sampling events. This would suggest that in this specific instance, the tillage event which occurred (after sampling event 1 and before sampling event 2) did impact the seasonal stability of this pairwise difference, as such events have been reported to do ( Madegwa and Uchida, 2021 ). This was however the only pairwise difference, in either fungal or bacterial community structure, to be affected in this way.…”

Section: Discussionmentioning

confidence: 62%

Soil microbial community structures are shaped by agricultural systems revealing little temporal variation

Fox¹,

Widmer²,

Luescher³

2022

Environmental Research

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Section: Discussionmentioning

confidence: 62%

Soil microbial community structures are shaped by agricultural systems revealing little temporal variation

Fox¹,

Widmer²,

Luescher³

2022

Environmental Research

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“…Environmental variation across seasons is a different kind of perturbation for microbial communities, and it has been shown that seasonality influences microbial communities of soil [ 73 – 75 ], water [ 76 , 77 ] and host-associated microbiomes [ 78 , 79 ]. We found that skin bacterial communities of A. altamirani vary across seasons, particularly in pre-metamorphic axolotls which have a lower bacterial diversity compared to metamorphic axolotls.…”

Section: Discussionmentioning

confidence: 99%

The skin microbiota of the axolotl Ambystoma altamirani is highly influenced by metamorphosis and seasonality but not by pathogen infection

et al. 2022

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Background Microbiomes have been increasingly recognized as major contributors to host health and survival. In amphibians, bacterial members of the skin microbiota protect their hosts by inhibiting the growth of the fungal pathogen Batrachochytrium dendrobatidis (Bd). Even though several studies describe the influence of biotic and abiotic factors over the skin microbiota, it remains unclear how these symbiotic bacterial communities vary across time and development. This is particularly relevant for species that undergo metamorphosis as it has been shown that host physiology and ecology drastically influence diversity of the skin microbiome. Results We found that the skin bacterial communities of the axolotl A. altamirani are largely influenced by the metamorphic status of the host and by seasonal variation of abiotic factors such as temperature, pH, dissolved oxygen and conductivity. Despite high Bd prevalence in these samples, the bacterial diversity of the skin microbiota did not differ between infected and non-infected axolotls, although relative abundance of particular bacteria were correlated with Bd infection intensity. Conclusions Our work shows that metamorphosis is a crucial process that shapes skin bacterial communities and that axolotls under different developmental stages respond differently to environmental seasonal variations. Moreover, this study greatly contributes to a better understanding of the factors that shape amphibian skin microbiota, especially in a largely underexplored group like axolotls (Mexican Ambystoma species).

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“…One of the drawbacks of these approaches targeting delivery of microbes to a new environment is maintaining the stability of these introduced microbes over time, as the microbes will have to compete for resources (nutrients, space) with a background microbiome in the new environment. An alternative to delivering microbes to a new environment is to make local changes in the soil conditions (in situ changes) through agricultural practices as a way to alter the soil's microbial composition and achieve disease control (Hermans et al, 2020; Madegwa & Uchida, 2021). For instance, the use of seasonal cover crops has been linked with changes in the soil microbiome (Kim et al, 2020) and in some cases with disease suppression (Wright et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Assessing the impact of successive soil cultivation on Meloidogyne enterolobii infection and soil bacterial assemblages

et al. 2023

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Soil cultivation may change the soil microbiome and alter interactions between plants and parasites. This work aimed to evaluate temporal changes in plant health, soil microbiome abundance and incidence of the emergent plant‐parasitic nematode, Meloidogyne enterolobii, in two soil fields with different agricultural uses. Soil samples were collected from a commercial tomato production field (agricultural soil) and a single‐cultivation strawberry field (native soil) for two successive years. Tomato plants cv. Early Girl were grown in a greenhouse, and three groups of inoculums were used: Fusarium only, M. enterolobii only and Fusarium + M. enterolobii. After 45 days, plants were evaluated for growth parameters and nematode reproduction and soil bacterial assemblages were assessed using cultivation‐independent sequencing methods (V3/V4 region of the 16S rRNA). Among both soil types, the average root fresh weight increased (56%), along with shoot fresh weight (82%) and fruit fresh weight (76%) in the second year. Moreover, there was an 80.5% decrease in eggs present per root system from the first year to the second. The relative abundance of bacterial assemblages from Year 1 to Year 2 changed for most of the top phyla (e.g., Actinobacteria, Bacteroidetes and Chloroflexi) and genera (e.g., Bacillus, Streptomyces and Flavisolibacter). This study suggests that soil management and year‐to‐year variation can lead to a shift in overall bacterial assemblages, better crop yield and an overall decrease in nematode reproduction.

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Land use and season drive changes in soil microbial communities and related functions in agricultural soils

Cited by 17 publications

References 98 publications

Soil microbial community structures are shaped by agricultural systems revealing little temporal variation

Soil microbial community structures are shaped by agricultural systems revealing little temporal variation

The skin microbiota of the axolotl Ambystoma altamirani is highly influenced by metamorphosis and seasonality but not by pathogen infection

Assessing the impact of successive soil cultivation on Meloidogyne enterolobii infection and soil bacterial assemblages

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