Microbial soil legacies of crops under different water and nitrogen levels determine succeeding crop performance

Kuerban, Mireadili; Cong, Wen‐Feng; Jing, Jingying; Bezemer, T.M.

doi:10.1007/s11104-022-05412-6

Cited by 18 publications

(11 citation statements)

References 42 publications

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“…Plant–soil feedbacks are well known to depend on the environmental context, the responsible mechanisms are, however, only partly understood (Gfeller, Thönen, et al, 2023; van der Putten et al, 2013; Smith‐Ramesh & Reynolds, 2017). Plant nutrient supply, for example, can influence the outcome of plant–soil feedbacks in crops and wild plants (Kos et al, 2015a; Kuerban et al, 2022). Generally, it is assumed that increasing soil fertility will weaken the strength of plant–soil feedbacks by lowering soil nutrient feedbacks.…”

Section: Discussionmentioning

confidence: 99%

Soil chemical and microbial gradients determine accumulation of root‐exuded secondary metabolites and plant–soil feedbacks in the field

Gfeller

Cadot

Waelchli

et al. 2023

J of Sust Agri & Env

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IntroductionHarnessing positive plant–soil feedbacks via crop rotations is a promising strategy for sustainable agriculture. These feedbacks are often context‐dependent, and how soil heterogeneity explains this variation is unknown. Plants influence soil properties, including microbes, by exuding specialized metabolites. Benzoxazinoids, specialized metabolites released by cereals such as wheat and maize, can alter rhizosphere microbiota and performance of plants subsequently growing in the exposed soils and are thus an excellent model to study agriculturally relevant plant–soil feedbacks.Materials and MethodsTo understand local variation in soil properties on benzoxazinoid‐mediated plant–soil feedbacks, we conditioned plots with wild‐type maize and benzoxazinoid‐deficient bx1 mutants in a grid pattern across a field, and we then grew winter wheat in the following season. We determined accumulation of benzoxazinoids, root‐associated microbial communities, abiotic soil properties and wheat performance in each plot and then assessed their associations.ResultsWe detected a marked gradient in soil chemistry and microbiota across the field. This gradient resulted in significant differences in benzoxazinoid accumulation, which were explained by differential benzoxazinoid degradation rather than exudation. Benzoxazinoid exudation modulated microbial diversity in root and rhizospheres during maize growth, but not during subsequent wheat growth, while the chemical fingerprint of benzoxazinoids persisted. Averaged across the field, we did not detect feedbacks on wheat performance and defence, apart from a transient decrease in biomass during vegetative growth. Closer analysis, however, revealed significant feedbacks along the chemical and microbial gradient of the field, with effects gradually changing from negative to positive along the gradient.ConclusionOverall, this study revealed that plant–soil feedbacks differ in strength and direction within a field and that this variation can be explained by standing chemical and microbial gradients. Understanding within‐field soil heterogeneity is crucial for the future exploitation of plant–soil feedbacks in sustainable precision agriculture.

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Section: Discussionmentioning

confidence: 99%

Soil chemical and microbial gradients determine accumulation of root‐exuded secondary metabolites and plant–soil feedbacks in the field

Gfeller

Cadot

Waelchli

et al. 2023

J of Sust Agri & Env

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“…The interaction between plant and soil microbial plays an important role in the direction of the legacy effect of the previous plant community on subsequent plant. Different plant species exhibit varying interactions with soil microorganisms due to their distinct functional traits (Heinen et al 2020; Kuerban et al 2023). The plant species alfalfa and orchard grass exhibit differences in both their functional and structural characteristics.…”

Section: Impact Of Plant Species During the Ley-crop On Soil Microorg...mentioning

confidence: 99%

“…These biotic legacies also in uence the subsequent growth of plants in that given soil. The direction (positive or negative) of such effects could be determined by plant functional traits (Kos et al 2015), mixture modes (Grange et al 2022; Wang et al 2021) and management practices (Kuerban et al 2023;Lang et al 2019). In general, positive or negative legacy effects often produced by accumulation of bene cial or pathogenic microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Plant species identity drives soil legacies by affecting root morphology of maize but effects depend on phosphorus supply

He,

Du,

Yang

et al. 2024

Preprint

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Aims Soil biotic legacies of leys in grassland-crop rotation systems affect growth of subsequent crops and are garnering increasing attention. We studied how different grass and legume species grown in monoculture or mixture affect the growth of the subsequent maize crop and whether the legacy effects depend on external phosphorus inputs. Methods We collected microbial inoculum from a five-year experiment with nine leys, including monocultures of two grasses and two legumes, and five legume-grass mixtures in different ratios (3:7, 4:6, 5:5, 6:4, 7:3), and conducted a greenhouse experiment to explore the biotic legacy effects conditioned by these nine leys on maize growth at three P levels (0, 20, 50 mg kg− 1). Results Significant biotic legacies on biomass of maize were only observed at high P. The biotic legacies and P application interactively impacted root morphology. Maize growth in soil conditioned by alfalfa monoculture showed stronger legacy effects by enriching beneficial bacteria and reducing accumulation of pathogenic fungi than maize growth in soil from the orchard grass monoculture. However, the effects of other monocultures and mixtures did not differ significantly. Conclusion Legacy effects on plant growth were proven to be ley-specific and depended on P input. These findings stress that biotic legacy effects interacted with external nutrient input have a significant role in determining the performance of subsequent crops.

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“…In addition, biotic factors, such as pre-existing microbial communities differ among different environments. Thus, different microbial communities have different impacts on subsequent plant performance (Kuerban et al 2022) leading to different plant-microbe interactions and feedbacks. Biotic and abiotic environmental factors may affect PSF; however, these environmental factors may independently or interactively in uence PSF, and one factor may counteract the effect of another in eld conditions.…”

Section: Introductionmentioning

confidence: 99%

Temporal dynamic of plant-soil feedback during biological invasion depended on soil environmental context

Feng²,

Li³

et al. 2023

Preprint

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Aims Plant-soil feedback (PSF), which may vary across space and time, is considered an important mechanism in biological invasion. However, it is still unclear how PSF change during biological invasion in heterogeneous environmental background.Methods Here, we measured the effects of soil microbial communities on the invasive species Ageratina adenophora and soil fungal communities at 24 sites with different invasion periods in two forest gaps with contrasting soil environmental backgrounds. The dominance of A. adenophora (cover and aboveground biomass) and diversity of native species at these sites were evaluated.Results In the lightly disturbed forest gaps, A. adenophora showed strong a positive response to their soil biota relative to sterilized soil (total PSFs), but a negative response to their own soil biota relative to other species’ soil biota (specific PSFs), which increased over their residence time. However, in the severely disturbed forest gaps, the invader had strong positive specific PSFs, which were maintained over a long invasion history. Higher resistance against soil pathogens may contribute to long-term maintenance of positive specific PSFs. Correspondingly, the diversity, richness of native species and dominance of A. adenophora did not significantly change during biological invasion in the lightly disturbed gap whereas in the severely disturbed gap, native species declined, and A. adenophora dominance increased after a long invasion.Conclusions These findings indicate that changes in PSFs may contribute to changes in the dominance and impact of invasive species in forest, and also highlight the need to consider the habitat context when studying PSFs.

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Microbial soil legacies of crops under different water and nitrogen levels determine succeeding crop performance

Cited by 18 publications

References 42 publications

Soil chemical and microbial gradients determine accumulation of root‐exuded secondary metabolites and plant–soil feedbacks in the field

Soil chemical and microbial gradients determine accumulation of root‐exuded secondary metabolites and plant–soil feedbacks in the field

Plant species identity drives soil legacies by affecting root morphology of maize but effects depend on phosphorus supply

Temporal dynamic of plant-soil feedback during biological invasion depended on soil environmental context

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