Relationships between geochemical properties and microbial nutrient acquisition in tropical forest and cropland soils

Kidinda, Laurent Kidinda; Doetterl, Sebastian; Kalbitz, Karsten; Bukombe, Benjamin; Babin, Doreen; Mujinya, Basile Bazirake; Vogel, Cordula

doi:10.1016/j.apsoil.2022.104653

Cited by 10 publications

(6 citation statements)

References 73 publications

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“…This natural difference in nutrient content between the soils from the north and south regions could influence the microbiome composition, according to the oligotrophic–copiotrophic theory [ 34 , 35 ]. This theory states that copiotrophic bacterial taxa (e.g., Proteobacteria and Firmicutes) usually are more prevalent in nutrient-rich conditions [ 34 , 36 , 37 ]; in contrast, oligotrophic bacteria (e.g., Acidobacteria, Gemmatimonadetes, Verrucomicrobia, and Chloroflexi) can maintain growth and be prevalent under nutrient-poor conditions [ 37 , 38 , 39 ]. We hypothesized that these differences in the soil nutrient content could be influencing partially the bacterial composition in the rhizosphere of the V. floribundum in Ecuador.…”

Section: Discussionmentioning

confidence: 99%

Untangling the Effects of Plant Genotype and Soil Conditions on the Assembly of Bacterial and Fungal Communities in the Rhizosphere of the Wild Andean Blueberry (Vaccinium floribundum Kunth)

et al. 2023

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Microbial communities in the rhizosphere influence nutrient acquisition and stress tolerance. How abiotic and biotic factors impact the plant microbiome in the wild has not been thoroughly addressed. We studied how plant genotype and soil affect the rhizosphere microbiome of Vaccinium floribundum, an endemic species of the Andean region that has not been domesticated or cultivated. Using high-throughput sequencing of the 16S rRNA and ITS region, we characterized 39 rhizosphere samples of V. floribundum from four plant genetic clusters in two soil regions from the Ecuadorian Highlands. Our results showed that Proteobacteria and Acidobacteria were the most abundant bacterial phyla and that fungal communities were not dominated by any specific taxa. Soil region was the main predictor for bacterial alpha diversity, phosphorous and lead being the most interesting edaphic factors explaining this diversity. The interaction of plant genotype and altitude was the most significant factor associated with fungal diversity. This study highlights how different factors govern the assembly of the rhizosphere microbiome of a wild plant. Bacterial communities depend more on the soil and its mineral content, while plant genetics influence the fungal community makeup. Our work illustrates plant–microbe associations and the drivers of their variation in a unique unexplored ecosystem from the Ecuadorian Andes.

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Section: Discussionmentioning

confidence: 99%

Untangling the Effects of Plant Genotype and Soil Conditions on the Assembly of Bacterial and Fungal Communities in the Rhizosphere of the Wild Andean Blueberry (Vaccinium floribundum Kunth)

et al. 2023

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“…For instance, Henry and Swan (1974) determined from coarse woody debris (and standing trees) that forest structure in a temperate mixed hardwood forest was more driven by disturbance than autogenic succession. Development of nutrient limitations of microorganisms (e.g., Camenzind et al., 2018, Kidinda et al., 2023) can also be determined through nutrient and carbon responses of plants and litter‐SOM. Differing SOM responses to additional resources such as CO 2 in grasslands and forests (Terrer et al., 2021) and temperature in peatlands (Zeh et al., 2022) similarly can be clarified through plant resource economies, be it competition, growth form, litter production, or a combination thereof.…”

Section: Discussionmentioning

confidence: 99%

Perspectives of the Fritz‐Scheffer Awardee 2021: Profile‐ to ecosystem‐scale perspectives on soil organic matter formation as demonstrated by woody debris in forest dynamics

Stutz

2023

J. Plant Nutr. Soil Sci.

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Soil organic matter (SOM) forms along a continuum from individual particles, pores, and aggregates to litter-soil profiles and larger ecosystems such as forests. However, forest management of SOM stocks and the carbon therein requires knowledge on which processes and factors at which scales determine SOM formation from forest biomass.As evident from woody debris at the profile scale, SOM forms through additions, transformations, translocations, and removals of litter by soil organisms and environmental components. Yet SOM stocks only increase if litter additions-to-removals are out of steady state or enter a new steady state that ignores older litter. Both happen through disturbance and self-selecting feedback processes in ecosystems consisting of autotrophs, heterotrophs, and their physical environment. One such positive feedback process is litter-SOM transformation by heterotrophs that releases nutrients that promote plant productivity and thus litter input. Stocks of litter-SOM, heterotrophs, nutrients, and plants thus exhibit Lotka-Volterra dynamics (i.e., predator-prey interactions) and only increase when attractor states (i.e., steady series or sets of states) change due to disturbance. Evidence of evolving feedback processes and disturbance in SOM would help identify limits, potentials, and precariousness of ecosystems in light of global change, but remains to be found.

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“…Soil aggregate stability (supervised by Nico Eisenhauer) will determine the resistance of soil aggregates against water as a disintegrating force. We will apply an approach modified from Kemper and Rosenau (1986). The resulting index represents the percentage of waterstable macroaggregates (> 250 μm).…”

Section: Methodsmentioning

confidence: 99%

“…They have studied the temporal and spatial drivers of soil communities and ecosystem functions across ecosystems (e.g. , Guerrero-Ramírez et al (2017), Craven et al (2018), Doetterl et al (2018), Gottschall et al (2019), Gottschall et al (2021, ), Kidinda et al (2023) and have linked soil communities to ecosystem functions (e.g. , , Beugnon et al (2021)).…”

Section: Preliminary Workmentioning

confidence: 99%

Plant diversity effects on soil multistability

Eisenhauer,

Vogel,

Domeignoz Horta

et al. 2024

RIO

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Soil is the basis for life on Earth as we know it. Healthy and stable soil is a prerequisite for well-functioning terrestrial ecosystems and has, thus, been proposed to play a key role in plant diversity–ecosystem functioning relationships. The overall objective of this sub-project is to study multidimensional soil stability as affected by plant diversity in a long-term plant diversity experiment. We designed three coordinated work packages (WPs) to comprehensively assess soil multistability to environmental fluctuations and climate extremes by considering the biological, chemical and physical dimensions that are key for soil functioning. We will use all unique facilities and approaches of the Jena Experiment Research Unit by combining synthesis of long-term data in the Main Experiment and the ΔBEF Experiment with performing new soil analyses in the DrY Experiment, the ResCUE Experiment and a joint CoMic Experiment, to gain a better mechanistic understanding of plant diversity–ecosystem functioning relationships. In close collaboration with other sub-projects, we will assess biological, chemical and physical soil properties and stability indicators that will be used to calculate soil multifunctionality and multistability indices. In WP1, we will build on three unique datasets to explore short-term and long-term effects of plant diversity on the stability of soil (microbial) properties. In WP2, we will combine different datasets and approaches to explore if plant diversity effects on the magnitude and stability of soil properties increase with abiotic and biotic stresses. In WP3, we will combine measurements of the above-mentioned dimensions of soil stability to explore if plant diversity increases the stability of multiple soil properties under hot drought. This sub-project is at the heart of the Research Unit by testing the overarching hypotheses outlined in the Coordination Proposal of the Jena Experiment, contributing to all main experiments, sharing data and performing joint sampling campaigns with all sub-projects and, at the same time, introducing a novel concept of soil multistability as affected by plant diversity and climate extremes. We propose to use a combination of simple, high-throughput (e.g. bait-lamina test) and more sophisticated methods (e.g. extracellular polymeric substances analyses) to be able to investigate temporal dynamics of soil processes and their mechanistic basis. Taken together, the results of the three WPs will provide new insights into the stabilising mechanisms of soil properties in the long term and in relation to climate extremes through plant diversity.

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Relationships between geochemical properties and microbial nutrient acquisition in tropical forest and cropland soils

Cited by 10 publications

References 73 publications

Untangling the Effects of Plant Genotype and Soil Conditions on the Assembly of Bacterial and Fungal Communities in the Rhizosphere of the Wild Andean Blueberry (Vaccinium floribundum Kunth)

Untangling the Effects of Plant Genotype and Soil Conditions on the Assembly of Bacterial and Fungal Communities in the Rhizosphere of the Wild Andean Blueberry (Vaccinium floribundum Kunth)

Perspectives of the Fritz‐Scheffer Awardee 2021: Profile‐ to ecosystem‐scale perspectives on soil organic matter formation as demonstrated by woody debris in forest dynamics

Plant diversity effects on soil multistability

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