Thomas Roitsch
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View article: Physiological and Metabolic Responses of Chickpea to Post-Flowering High Temperatures and Limited Water Availability
Physiological and Metabolic Responses of Chickpea to Post-Flowering High Temperatures and Limited Water Availability Open
Post-flowering elevated temperatures are increasingly frequent and strongly affect crop yield and seed nutritional quality. This study examined the impact of elevated post-flowering temperatures (32°C/25°C, day/night) combined with two wat…
View article: <i>Dasineura asteriae</i> Reprograms the Flower Gene Expressions of Vegetative Organs to Create Flower‐Like Gall in <i>Aster scaber</i>
<i>Dasineura asteriae</i> Reprograms the Flower Gene Expressions of Vegetative Organs to Create Flower‐Like Gall in <i>Aster scaber</i> Open
Plant galls are abnormal growing tissues induced by various parasitic organisms, exhibiting diverse and complex morphologies. Typically, these galls differ significantly in appearance from their host plants. Here, we report that larvae of …
View article: Physiological and metabolic effects of a transposon-mediated mutation in the glutamate synthase gene, gltB, of plant-beneficial, cytokinin-producing Pseudomonas hormoni G20-18T
Physiological and metabolic effects of a transposon-mediated mutation in the glutamate synthase gene, gltB, of plant-beneficial, cytokinin-producing Pseudomonas hormoni G20-18T Open
Pseudomonas species are well-studied Gram-negative bacteria involved in plant-microbe interactions, particularly in the rhizosphere and phyllosphere, where they enhance plant growth and resilience under stress. A key trait of these bacteri…
View article: Structure–function relation of cytokinins determines their differential efficiency in mediating tobacco resistance against <i>Pseudomonas syringae</i>
Structure–function relation of cytokinins determines their differential efficiency in mediating tobacco resistance against <i>Pseudomonas syringae</i> Open
The classic plant growth‐promoting phytohormone cytokinin has been identified and established as a mediator of pathogen resistance in different plant species. However, the resistance effect of structurally different cytokinins appears to v…
View article: Antioxidant Responses and Redox Regulation Within Plant-Beneficial Microbe Interaction
Antioxidant Responses and Redox Regulation Within Plant-Beneficial Microbe Interaction Open
The increase in extreme climate events associated with global warming is a great menace to crop productivity nowadays. In addition to abiotic stresses, warmer conditions favor the spread of infectious diseases affecting plant performance. …
View article: Stimulation of Arabidopsis thaliana Seed Germination at Suboptimal Temperatures through Biopriming with Biofilm-Forming PGPR Pseudomonas putida KT2440
Stimulation of Arabidopsis thaliana Seed Germination at Suboptimal Temperatures through Biopriming with Biofilm-Forming PGPR Pseudomonas putida KT2440 Open
This study investigated the germination response to temperature of seeds of nine Arabidopsis thaliana ecotypes. They are characterized by a similar temperature dependency of seed germination, and 10 °C and 29 °C were found to be suboptimal…
View article: Transcriptomic dataset of Phaseolus vulgaris leaves in response to the inoculation of pathogenic Xanthomonas citri pv. fuscans and its type III secretion system-defective mutant hrcV
Transcriptomic dataset of Phaseolus vulgaris leaves in response to the inoculation of pathogenic Xanthomonas citri pv. fuscans and its type III secretion system-defective mutant hrcV Open
Xanthomonas citri pv. fuscans (Xcf) and Xanthomonas phaseoli pv. phaseoli (Xpp) are responsible for the Common Bacterial Blight (CBB), a major common bean (Phaseolus vulgaris) disease. The pathogenicity of Xcf and Xpp is known to be depend…
View article: The sucrose signalling route controls Flavescence dorée phytoplasma load in grapevine leaves
The sucrose signalling route controls Flavescence dorée phytoplasma load in grapevine leaves Open
Flavescence dorée (FD) is a phytoplasma disease transmitted by insects, causing severe damage in vineyards across Europe. Since there is no effective treatment, infected plants must be removed to prevent further spread. There is variation …
View article: Cytokinin‐deficient <i>C</i><i>hlamydomonas reinhardtii</i> <scp>CRISPR‐Cas9</scp> mutants show reduced ability to prime resistance of tobacco against bacterial infection
Cytokinin‐deficient <i>C</i><i>hlamydomonas reinhardtii</i> <span>CRISPR‐Cas9</span> mutants show reduced ability to prime resistance of tobacco against bacterial infection Open
Although microalgae have only recently been recognized as part of the plant and soil microbiome, their application as biofertilizers has a tradition in sustainable crop production. Under consideration of their ability to produce the plant …
View article: Unveiling plant defense arsenal: metabolic strategies in <i>Brassica oleracea</i> during black rot disease
Unveiling plant defense arsenal: metabolic strategies in <i>Brassica oleracea</i> during black rot disease Open
Alterations in plant metabolism play a key role in the complex plant–pathogen interactions. However, there is still a lack of knowledge about the connection between changes in primary and specialized metabolism and the plant defense agains…
View article: Candidate pathogenicity factor/effector proteins of ‘Candidatus Phytoplasma solani’ modulate plant carbohydrate metabolism, accelerate the ascorbate–glutathione cycle, and induce autophagosomes
Candidate pathogenicity factor/effector proteins of ‘Candidatus Phytoplasma solani’ modulate plant carbohydrate metabolism, accelerate the ascorbate–glutathione cycle, and induce autophagosomes Open
The pathogenicity of intracellular plant pathogenic bacteria is associated with the action of pathogenicity factors/effectors, but their physiological roles for most phytoplasma species, including ‘ Candidiatus Phytoplasma solani’ are unkn…
View article: Understanding interactions of ‘Candidatus Phytoplasma solani’ with grapevine through the lens of complex networks
Understanding interactions of ‘Candidatus Phytoplasma solani’ with grapevine through the lens of complex networks Open
‘Candidatus Phytoplasma solani’ is the agent associated with the most widespread grapevine yellows disease, the “bois noir”, which causes significant economic losses every year. Understanding the interaction between this phytoplasma and th…
View article: Cytokinin-deficient CRISPR/Cas9 mutants of Chlamydomonas reinhardtii show reduced ability to prime resistance of tobacco against bacterial infection
Cytokinin-deficient CRISPR/Cas9 mutants of Chlamydomonas reinhardtii show reduced ability to prime resistance of tobacco against bacterial infection Open
Microalgae play an essential role in agriculture as bio-fertilizers and biostimulants, but some also produce various plant hormones, such as cytokinins (CK). CK are a class of natural plant hormones and there is evidence that exogenous or …
View article: Functional phenomics for improved climate resilience in Nordic agriculture
Functional phenomics for improved climate resilience in Nordic agriculture Open
The five Nordic countries span the most northern region for field cultivation in the world. This presents challenges per se, with short growing seasons, long days, and a need for frost tolerance. Climate change has additionally increased r…
View article: High-throughput phenotyping of physiological traits for wheat resilience to high temperature and drought stress
High-throughput phenotyping of physiological traits for wheat resilience to high temperature and drought stress Open
Interannual and local fluctuations in wheat crop yield are mostly explained by abiotic constraints. Heatwaves and drought, which are among the top stressors, commonly co-occur, and their frequency is increasing with global climate change. …
View article: Extracellular Glycolytic Activities in Root Endophytic Serendipitaceae and Their Regulation by Plant Sugars
Extracellular Glycolytic Activities in Root Endophytic Serendipitaceae and Their Regulation by Plant Sugars Open
Endophytic fungi that colonize the plant root live in an environment with relative high concentrations of different sugars. Analyses of genome sequences indicate that such endophytes can secrete carbohydrate-related enzymes to compete for …
View article: Inoculation of tomato (Solanum lycopersicum) roots with growth promoting Pseudomonas strains induces distinct local and systemic metabolic biosignatures
Inoculation of tomato (Solanum lycopersicum) roots with growth promoting Pseudomonas strains induces distinct local and systemic metabolic biosignatures Open
The genus Pseudomonas harbours numerous strains that positively affect plant growth and defence through diverse mechanisms such as nutrient solubilisation and production of phytohormones or secondary metabolites. The aim of this study was …
View article: Identification of a bio-signature for barley resistance against Pyrenophora teres infection based on physiological, molecular and sensor-based phenotyping
Identification of a bio-signature for barley resistance against Pyrenophora teres infection based on physiological, molecular and sensor-based phenotyping Open
Necrotic and chlorotic symptoms induced during Pyrenophora teres infection in barley leaves indicate a compatible interaction that allows the hemi-biotrophic fungus Pyrenophora teres to colonise the host. However, it is unexplored how this…
View article: Complete Genome Sequence of the Cytokinin-Producing Biocontrol Strain Pseudomonas fluorescens G20-18
Complete Genome Sequence of the Cytokinin-Producing Biocontrol Strain Pseudomonas fluorescens G20-18 Open
Here, we report the complete genome sequence of the cytokinin-producing plant growth-promoting strain Pseudomonas fluorescens G20-18. The complete genome assembly resulted in a single, circular chromosome of 6.48 Mbp and harbors several se…
View article: New Cross-Talks between Pathways Involved in Grapevine Infection with ‘Candidatus Phytoplasma solani’ Revealed by Temporal Network Modelling
New Cross-Talks between Pathways Involved in Grapevine Infection with ‘Candidatus Phytoplasma solani’ Revealed by Temporal Network Modelling Open
Understanding temporal biological phenomena is a challenging task that can be approached using network analysis. Here, we explored whether network reconstruction can be used to better understand the temporal dynamics of bois noir, which is…
View article: Differential Response of Grapevine to Infection with ‘Candidatus Phytoplasma solani’ in Early and Late Growing Season through Complex Regulation of mRNA and Small RNA Transcriptomes
Differential Response of Grapevine to Infection with ‘Candidatus Phytoplasma solani’ in Early and Late Growing Season through Complex Regulation of mRNA and Small RNA Transcriptomes Open
Bois noir is the most widespread phytoplasma grapevine disease in Europe. It is associated with ‘Candidatus Phytoplasma solani’, but molecular interactions between the causal pathogen and its host plant are not well understood. In this wor…
View article: Identification of Root-Associated Bacteria That Influence Plant Physiology, Increase Seed Germination, or Promote Growth of the Christmas Tree Species Abies nordmanniana
Identification of Root-Associated Bacteria That Influence Plant Physiology, Increase Seed Germination, or Promote Growth of the Christmas Tree Species Abies nordmanniana Open
Abies nordmanniana is used for Christmas tree production but poor seed germination and slow growth represent challenges for the growers. We addressed the plant growth promoting potential of root-associated bacteria isolated from A. nordman…