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. 2018 Mar 27;6:58. doi: 10.1186/s40168-018-0445-0

Fig. 2.

Fig. 2

Evolutionary history of microbe-microbe and plant-microbe interactions. Microbial interactions are outlined at the evolutionary scale, showing that plant-microbe interactions occurred relatively recently compared to the more ancestral interactions among bacteria or between different microbial kingdoms. Both competitive (red) and cooperative (green) interactions within and between microbial kingdoms are depicted. Mya, million years ago. Evolutionary divergence estimated from [237, 238]