The effect of successive summer drought periods on bacterial diversity along a plant species richness gradient.

Drought is a major stressor to soil microbial communities, and the intensification of climate change is predicted to increase hydric stress worldwide in the coming decades. As a possible mitigating factor for the consequences of prolonged drought periods, above and belowground biodiversity can increase ecosystem resistance and resilience by improving metabolic redundancy and complementarity as biodiversity increases. Here, we investigated the interaction effect between plant richness and successive, simulated summer drought on soil microbial communities during a period of 9 years.

Comparative genomic analysis of strain B1 reveals conserved potential for adaptation to endophytism and plant growth promotion.

In our study, we aimed to explore the genomic and phenotypic traits of strain B1, which was isolated from root material of healthy apple plants, to adapt to the endophytic lifestyle and promote plant growth. We identified putative genes encoding proteins involved in chemotaxis, flagella biosynthesis, biofilm formation, secretory systems, detoxification, transporters, and transcription regulation. Furthermore, B1 exhibited both swarming and swimming motilities, along with biofilm formation.

(Pan)genomic analysis of two isolates and their role in phenolic compound degradation.

The genus is recognized for its potential to degrade a large range of aromatic substances, including plant-derived phenolic compounds. We used comparative genomics in the context of the broader pan-genome to study genomic traits of two newly described strains (type-strain R79 and R85) isolated from apple rhizosphere. Of particular interest was their ability to degrade phenolic compounds as part of an integrated approach to treat apple replant disease (ARD) syndrome.

Cultivar-specific dynamics: unravelling rhizosphere microbiome responses to water deficit stress in potato cultivars.

Background: Growing evidence suggests that soil microbes can improve plant fitness under drought. However, in potato, the world's most important non-cereal crop, the role of the rhizosphere microbiome under drought has been poorly studied. Using a cultivation independent metabarcoding approach, we examined the rhizosphere microbiome of two potato cultivars with different drought tolerance as a function of water regime (continuous versus reduced watering) and manipulation of soil microbial diversity (i.

Microbiome convergence and deterministic community assembly along successional biocrust gradients on potash salt heaps.

Potash mining, typically performed for agricultural fertilizer production, can create piles of residual salt waste that are ecologically detrimental and difficult to revegetate. Biological soil crusts (biocrusts) have been found growing on and around these heaps, suggesting resilience to the hypersaline environment. We set out to understand the community dynamics of biocrust formation by examining two succesionary salinity gradients at historical mining sites using a high throughput amplicon sequencing.

Resilience of barley (Hordeum vulgare) plants upon exposure to tramadol: Implication for the root-associated bacterial community and the antioxidative plant defence system.

Insufficiently treated reclaimed water can act as a source of contamination by introducing recalcitrant contaminants (e.g., pharmaceutical compounds) to various water bodies and/or agricultural soils after irrigation.

Draft Genome Sequence of the Bacterial Endophyte B1, Isolated from Roots of Apple ().

Over the past years, a number of important traits supporting plant growth have been shown for different strains of Priestia megaterium (formerly known as Bacillus megaterium). Here, we report the draft genome sequence of the endophytic bacterial strain B1, which was isolated from surface-sterilized roots of apple plants.

pan-genome reveals specific functional traits for plant beneficial and pathogenic plant-associations.

Beta-proteobacteria belonging to the genus have been described from various environments. Many strains can interact with a range of hosts, including humans and plants, forming neutral, beneficial or detrimental associations. In the frame of this study, we investigated the genomic properties of 52 bacterial strains of the genus , isolated from healthy roots of with the intent of identifying traits important for effective plant-growth promotion.

Complete Genome Sequences of Two sp. Strains with Large and Linear Chromosomes, Isolated from Apple Rhizosphere.

Members of the genus are usually able to catalyze a number of processes, which are of great interest for ecosystem performance as well as biotechnology. Here, we report the complete genome sequences of two strains that were isolated from rhizosphere soil from an apple orchard in northern Germany.