Publications by authors named "A Fleissner"

Diplodia sapinea (Fr.) Fuckel is a widespread fungal pathogen affecting conifers worldwide. Infections can lead to severe symptoms, such as shoot blight, canker, tree death, or blue stain in harvested wood, especially in Pinus species.

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Article Synopsis
  • Saponins are toxic compounds found in plants that help defend against pests and pathogens, with known mechanisms for fungal resistance focused on enzyme secretion.
  • Researchers investigated how the fungus Botrytis cinerea tolerates specific saponins from tomato and Digitalis purpurea, discovering four mechanisms that help it overcome the toxicity.
  • One novel mechanism involves enzymatic deglycosylation, while the others function in the fungal membrane, suggesting implications for understanding tolerance in both plant pathogenic fungi and potential human pathogens.
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is a globally distributed opportunistic fungal pathogen of conifers that causes severe production losses in forestry. The fungus frequently colonizes pine trees as an endophyte without causing visible symptoms but can become pathogenic when the host plant is weakened by stress, such as drought or heat. Forest damage might therefore further increase due to the effects of climate change.

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The development of ascomycete fungal colonies involves cell-cell fusion at different growth stages. In the model fungus Neurospora crassa, communication of two fusing cells is mediated by an unusual signaling mechanism, in which the two partners take turns in signal sending and receiving. In recent years, the molecular basis of this unusual cellular behavior has started to unfold, indicating the presence of an excitable signaling network.

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In many filamentous fungi, germinating spores cooperate by fusing into supracellular structures, which develop into the mycelial colony. In the model fungus Neurospora crassa, this social behavior is mediated by an intriguing mode of communication, in which two fusing cells take turns in signal sending and receiving. Here we show that this dialogue-like cell communication mechanism is highly conserved in distantly related fungal species and mediates interspecies interactions.

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