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The unrooted phylogenetic tree of the GRF gene family in B. campestris (Bc), A. thaliana (At), B. rapa (Br), and O. sativa (Os). The different colors represent the five GRF subfamilies (I, II, III, IV, and V). Blue represents the GRFs from B. campestris. The values at the nodes indicate bootstrap support based on 1000 replicates.
