Publications by authors named "T Roitsch"

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. Within this context, beneficial microbes constitute a sustainable alternative for the mitigation of the effects of climate change on plant growth and productivity.

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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 vary and may regulate diverse mechanisms to establish resistance. Hence, we comparatively analysed the impact of six different adenine- and phenylurea-type cytokinins on the well-established pathosystem Nicotiana tabacum-Pseudomonas syringae.

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Article Synopsis
  • The study focuses on the impact of pathogenic strains on common bean plants, exploring how they use a Type III Secretion System to inject effectors that disturb plant defense mechanisms.
  • The experiment examined the transcriptomic responses of one susceptible (Flavert) and one resistant (Vezer) bean cultivar after inoculation with both a virulent strain and its T3SS-defective mutant.
  • The results yielded a comprehensive dataset with 36,978 transcripts available in the NCBI Gene Expression Omnibus for further research on how these bacterial effectors influence plant cellular functions.
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This study investigated the germination response to temperature of seeds of nine ecotypes. They are characterized by a similar temperature dependency of seed germination, and 10 °C and 29 °C were found to be suboptimal low and high temperatures for all nine ecotypes, even though they originated from regions with diverse climates. We tested the potential of four PGPR strains from the genera and to stimulate seed germination in the two ecotypes under these suboptimal conditions.

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Flavescence dorée (FD) is a phytoplasma disease transmitted by insects, causing severe damage to vineyards across Europe. Infected plants cannot be cured and must be removed to prevent further spread. Different grapevine cultivars show varying susceptibility to FD, and some exhibit symptom remission, known as recovery, although the mechanisms behind this are unclear.

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