Plastid phylogenomics and molecular evolution of Alismatales

• DOI: 10.1111/cla.12133
• Publication Date: 2015-11-23T05:52:52Z
• Authors: T. Gregory Ross; Craig F. Barrett; Marybel Soto Gomez; Vivienne K.Y. Lam; Claudia L. Henriquez; Donald H. Les; Jerrold I. Davis; Argelia Cuenca; Gitte Petersen; Ole Seberg; Marcela Thadeo; Thomas J. Givnish; John Conran; Dennis W. Stevenson; Sean W. Graham
• Keywords: Phylogenomics

Abstract Past phylogenetic studies of the monocot order Alismatales left several higher‐order relationships unresolved. We addressed these uncertainties using a nearly complete genus‐level sampling whole plastid genomes (gene sets representing 83 protein‐coding and ribosomal genes) from members core alismatid families, Tofieldiaceae additional taxa (Araceae other angiosperms). Parsimony likelihood analyses inferred generally highly congruent within order, alternative partitioning schemes had little impact on patterns clade support. All families with multiple genera were resolved as monophyletic, we strong bootstrap support for most inter‐ intrafamilial relationships. The precise placement in was not well supported. Although to be sister‐group rest one analysis indicated contrasting Araceae‐sister arrangement. Acorus (Acorales) supported member order. also investigated molecular evolution NADH dehydrogenase, large enzymatic complex that may play role photooxidative stress responses. Ancestral‐state reconstructions four convergent losses functional dehydrogenase Alismatales, including single loss Tofieldiaceae.