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Schematic model of the intracellular survival of endofungal bacteria
The endosymbiotic bacterium Mycetohabitans rhizoxinica secretes transcription activator-like effector 1 (MTAL1) via the type 3 secretion system, which is essential for its survival within R. microsporus (green). Absence of MTAL1 leads to entrapment of M. rhizoxinica through fungal septation and subsequent bacterial cell death (red).
