Figure 8: Model for effector secretion by M. oryzae. | Nature Communications

Figure 8: Model for effector secretion by M. oryzae.

From: Two distinct secretion systems facilitate tissue invasion by the rice blast fungus Magnaporthe oryzae

Figure 8

This cartoon shows a bulbous IH at 26–30 h.p.i. inside a rice cell. The EIHM (tan) continues around the BIC. Apoplastic effectors (blue), including Bas4, Bas113 and Slp1, accumulate in the EIHM compartment surrounding the IH, resulting in uniform outlining of the IH. These apoplastic effectors follow the conventional, BFA-sensitive, Golgi-dependent secretion pathway. In contrast, cytoplasmic effectors (magenta), including Pwl2, AVR-Pita, Bas1 and Bas107, accumulate in the BIC beside the first-differentiated bulbous IH cell. To a lesser extent, as observed at saturated fluorescence exposure levels (Fig. 3c), cytoplasmic effectors (magenta dotted line) also accumulate inside the EIHM surrounding the BIC-associated cells (the primary hypha and first-differentiated bulbous IH cell), but they do not outline the subsequently formed bulbous IH cells. These cytoplasmic effectors follow a nonconventional, BFA-insensitive secretion pathway involving exocyst and SNARE proteins.

Back to article page