Comparison of factors limiting bacterial growth in different soils

Dernoling, Fredrik; Figueroa, Daniela; Bååth, Erland

doi:10.1016/j.soilbio.2007.05.002

Cited by 422 publications

(255 citation statements)

References 35 publications

Supporting

Mentioning

241

Contrasting

Unclassified

Order By: Relevance

“…Poor soil conditions over successive generations favour fast growing Proteobacteria (Lambert et al, 1990;Demoling et al, 2007), consistent with some groups becoming increasingly dominant in generations two and three (Supplementary Figure S4a). The most abundant bacterial OTUs selected were α-proteobacteria (Rhizobiaceae family), β-proteobacteria (especially the genus Massilia), and Bacteroidetes, whereas the second most abundant group, the actinobacteria, decreased in the rhizosphere over generations (Supplementary Figures S5a and b).…”

Section: Microbiota Succession In Sandmentioning

confidence: 58%

Stability and succession of the rhizosphere microbiota depends upon plant type and soil composition

et al. 2015

View full text Add to dashboard Cite

We examined succession of the rhizosphere microbiota of three model plants (Arabidopsis, Medicago and Brachypodium) in compost and sand and three crops (Brassica, Pisum and Triticum) in compost alone. We used serial inoculation of 24 independent replicate microcosms over three plant generations for each plant/soil combination. Stochastic variation between replicates was surprisingly weak and by the third generation, replicate microcosms for each plant had communities that were very similar to each other but different to those of other plants or unplanted soil. Microbiota diversity remained high in compost, but declined drastically in sand, with bacterial opportunists and putative autotrophs becoming dominant. These dramatic differences indicate that many microbes cannot thrive on plant exudates alone and presumably also require carbon sources and/or nutrients from soil. Arabidopsis had the weakest influence on its microbiota and in compost replicate microcosms converged on three alternative community compositions rather than a single distinctive community. Organisms selected in rhizospheres can have positive or negative effects. Two abundant bacteria are shown to promote plant growth, but in Brassica the pathogen Olpidium brassicae came to dominate the fungal community. So plants exert strong selection on the rhizosphere microbiota but soil composition is critical to its stability. microbial succession/ plant-microbe interactions/rhizosphere microbiota/selection.

show abstract

Section: Microbiota Succession In Sandmentioning

confidence: 58%

Stability and succession of the rhizosphere microbiota depends upon plant type and soil composition

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Several of these species compete for the same ecological niche and nutrient resources (Demoling et al, 2007). Therefore, the ability to cope with the presence of a range of competing microbial species is essential for growth and survival in soil ecosystems.…”

Section: Discussionmentioning

confidence: 99%

“…Although these assays are somewhat artificial, they do allow an in-depth analysis of fundamental mechanisms and genes underlying microbial interactions. In addition, the experiments were performed under carbonlimiting conditions, which to some extent mimics the situation in most soils (Demoling et al, 2007;Rousk and Baath, 2007).…”

Section: Pdv48 Brv52mentioning

confidence: 99%

“…Most known soil bacterial species are organotrophs that is, they obtain the energy for growth from the assimilation of organic compounds. However, the availability or accessibility of degradable organic compounds is limited in most soils (Alden et al, 2001;Demoling et al, 2007). In addition, there is a high degree of overlap in metabolic abilities of organotrophic bacteria (Strickland et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transcriptional and antagonistic responses of Pseudomonas fluorescens Pf0-1 to phylogenetically different bacterial competitors

et al. 2011

View full text Add to dashboard Cite

The ability of soil bacteria to successfully compete with a range of other microbial species is crucial for their growth and survival in the nutrient-limited soil environment. In the present work, we studied the behavior and transcriptional responses of soil-inhabiting Pseudomonas fluorescens strain Pf0-1 on nutrient-poor agar to confrontation with strains of three phylogenetically different bacterial genera, that is, Bacillus, Brevundimonas and Pedobacter. Competition for nutrients was apparent as all three bacterial genera had a negative effect on the density of P. fluorescens Pf0-1; this effect was most strong during the interaction with Bacillus. Microarray-based analyses indicated strong differences in the transcriptional responses of Pf0-1 to the different competitors. There was higher similarity in the gene expression response of P. fluorescens Pf0-1 to the Gram-negative bacteria as compared with the Gram-positive strain. The Gram-negative strains did also trigger the production of an unknown broad-spectrum antibiotic in Pf0-1. More detailed analysis indicated that expression of specific Pf0-1 genes involved in signal transduction and secondary metabolite production was strongly affected by the competitors' identity, suggesting that Pf0-1 can distinguish among different competitors and fine-tune its competitive strategies. The results presented here demonstrate that P. fluorescens Pf0-1 shows a species-specific transcriptional and metabolic response to bacterial competitors and provide new leads in the identification of specific cues in bacteria-bacteria interactions and of novel competitive strategies, antimicrobial traits and genes.

show abstract

“…of overall soil microbial activity (Frankenberger and Dick, 1983). The biomass of microbes and activities of different enzymes is typically thought to be regulating indicator of nutrient availability, resistance and resilience capacity of soil (Demoling et al, 2007;Kumar et al, 2014). Soil respiration and enzyme activities, particularly hydrolase activities, involved in organic matter turnover, hence in nutrient cycles and plant nutrition, have been utilized by soil scientists in order to investigate the effects of different soil management strategies and agricultural practices, including organic amendments on soil fertility and health (Dick, 1997).…”

Section: Introductionmentioning

confidence: 99%

Fluorescein Diacetate Activity as Affected by Residue Retention and P Fertilization in Maize under Maize-Wheat Cropping System

Kumawat¹,

Sharma²,

Meena³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

Comparison of factors limiting bacterial growth in different soils

Cited by 422 publications

References 35 publications

Stability and succession of the rhizosphere microbiota depends upon plant type and soil composition

Stability and succession of the rhizosphere microbiota depends upon plant type and soil composition

Transcriptional and antagonistic responses of Pseudomonas fluorescens Pf0-1 to phylogenetically different bacterial competitors

Fluorescein Diacetate Activity as Affected by Residue Retention and P Fertilization in Maize under Maize-Wheat Cropping System

Contact Info

Product

Resources

About