Diversification of Type VI Secretion System Toxins Reveals Ancient Antagonism among Bee Gut Microbes.

This trend was highly significant for the toxin genes of Rhs loci 1 and 2 (Spearman’s rank correlation ρ = −0.388, P < 0.005, and Spearman’s rank correlation ρ = −0.563, P < 0.001, respectively), although this trend was not observed for Rhs locus 3 (Spearman’s rank correlation ρ = 0.375, P = 0.034).

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