Good afternoon, dear colleagues. Not long ago my colleagues and I discovered strange formations on the s strawberries stems. They become stiff and prickly. In addition, intracellular tissue structure was like jelly. At the same time, the roots were normal without pathologies. We also didn’t not detected nematodes, but I cann't say of their absence at all.

I lean towards version that it is probably agrobacterial infection. Perhaps, someone can help me to indicate this pathology?