The AEGEAN-169 clade of bacterioplankton is synonymous with SAR11 subclade V (HIMB59) and metabolically distinct
ABSTRACT Bacterioplankton of the SAR11 clade are the most abundant marine microorganisms and consist of numerous subclades spanning order-level divergence (Pelagibacterales).The assignment of the earliest diverging subclade V (a.k.a.HIMB59) to the Pelagibacterales is highly controversial, with multiple recent phylogenetic studies placing them compl