Phylotranscriptomic Analyses Reveal Multiple Whole-Genome Duplication Events, the History of Diversification and Adaptations in the Araceae.

Our results improve our understanding of aroid phylogeny using the large number of single/low-copy nuclear genes. In contrast to the Proto-Araceae group and the lemnoid clade adaption to aquatic environments, our analyses of WGD, diversification and functional enrichment indicated that WGD may play a more important role in the evolution of adaptations to tropical, terrestrial environments in the True-Araceae clade. These insights provide us with new resources to interpret the evolution of the Araceae.