Figure 8.

Synopsis of the most remarkable phenomena observed in the Ta37–B05.10 dual cultures. Arrows pointing up/down indicate gene up‐/down‐regulation. Arrows, boxes or circles in red indicate the responses that can be attributed to botrydial (BOT)‐mediated regulation. Lines, arrows or circles in blue represent the up‐regulatory effect caused by the signals generated in the interaction zone. The blue dotted lines originating in the interaction zone, projected over the Ta37 colony, represent the weakening of this confrontation effect in the zones located far from the confrontation line. ‘BOT‐mediated down‐regulation’ (red) and ‘BOT‐independent up‐regulation’ (blue) boxes illustrate the down‐regulatory effect of BOT produced by B05.10, which is compensated by the up‐regulatory effect of the Ta37 structural tri genes [(st)tri], caused by the elicitors released in the interaction zone. It should be noted that, in the non‐interaction zone, the BOT effect does not exist or is much weaker, and there is an up‐regulation of (st)tri genes by the distal effect of elicitors released in the interaction zone.