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Fig. 7. | BMC Biology

Fig. 7.

From: Starvation-induced cell fusion and heterokaryosis frequently escape imperfect allorecognition systems in an asexual fungal pathogen

Fig. 7.

Nuclear interactions in “compatible” and “incompatible” V. dahliae heterokaryons. a Gradual accumulation of sGFP signal in mCherry-labeled nuclei in heterokaryotic cells between strains Ls.17 H1-mCherry × Cf.38 H1-sGFP (“compatible”), and Ls.17 H1-mCherry × PH H1-sGFP (“incompatible”). Arrowheads: recipient nuclei. b Putative nuclear fusion (arrowhead) in strain Ls.17 Δatg1. Bars in a, b = 5 μm. c Schematic representation of the possible fates of a non-self cell fusion in V. dahliae. Fused cells can remain viable or be subjected to an incompatibility-triggered reaction. Division of rare hypothetical fused nuclei in viable heterokaryotic cells could generate distinct nuclear lineages in mosaic colonies. d Nuclei of “incompatible” (Ls.17 H1-mCherry × BB sGFP, Ls.17 H1-mCherry × PH sGFP) and self-pairing control (Ls.17 H1-mCherry × Ls.17 sGFP) heterokaryons following growth under non-selective conditions. Bars = 10 μm

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