Publications by authors named "R Volz"

Arthroscopic-assisted anterior cruciate ligament reconstruction follows standardized protocols. Multiple fixation techniques are known. Discussion has been raised about osseus fixation and integration.

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  • The IDD family of transcription factors is important for plant growth, development, and immunity, but their role during abiotic stress like salt is not well understood.
  • Research on idd4 transgenic lines showed that disrupting this gene increases salt tolerance, leading to better plant growth and a favorable Na/K ratio, while overexpression makes plants more susceptible to salt stress.
  • Analysis reveals that IDD4 is phosphorylated by MPK6 at serine-73 under salt stress, and this phosphorylation is essential for reprogramming gene expression related to salt stress adaptation.
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  • A study examines how plant proteins interact with viral proteins during viral infections, focusing on soybean mosaic virus (SMV).
  • In resistant soybean varieties, certain genes related to photosynthesis (PSaC and ATPsyn-α) are up-regulated, which helps reduce virus accumulation.
  • The research reveals that these genes may enhance resistance to the virus by modulating the function of viral proteins involved in viral replication and movement.
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MAPKs are universal eukaryotic signaling factors whose functioning is assumed to depend on the recognition of a common docking motif (CD) by its activators, substrates, and inactivators. We studied the role of the CD domain of Arabidopsis MPK4 by performing interaction studies and determining the ligand-bound MPK4 crystal structure. We revealed that the CD domain of MPK4 is essential for interaction and activation by its upstream MAPKKs MKK1, MKK2, and MKK6.

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Iron acquisition is crucial for virulence of the human pathogen Aspergillus fumigatus. Previous studies indicated that this mold regulates iron uptake via both siderophores and reductive iron assimilation by the GATA factor SreA and the SREBP regulator SrbA. Here, characterization of loss of function as well as hyperactive alleles revealed that transcriptional activation of iron uptake depends additionally on the ZnCys regulator AtrR, most likely via cooperation with SrbA.

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