Fig. 4: Maximum-likelihood nifH phylogeny with ASVs from coral DNA and RNA samples, made using reference sequences from [75, 76], and [64] (see Supplementary Information for detail).

ASVs from RNA-based community samples are pink, and ASVs from DNA samples are symbolized by () Hantu-Goniopora, (
) Hantu-Platygyra, (
) Kusu-Platygyra, and (
) Kusu-Pocillopora. Clusters I–III are known to fix nitrogen.